hermes-agent/hermes_cli/runtime_provider.py
teknium1 3070de1963 fix(tui_gateway): recover custom provider identity from the session's model name
A session pinned to a named custom provider could silently reroute to the
user's default provider on resume/rebuild. Session rows persist the RESOLVED
provider — bare "custom" for every named providers:/custom_providers: entry —
and when no base_url survived in model_config, the existing heal
(canonical_custom_identity) had only the config.model.provider fallback left.
For users whose global default is a BUILT-IN provider (e.g. nous) that tier
cannot fire, so the bare provider was dropped, resume fell back to the default
provider with the session's custom model name, and the default endpoint 404'd
with "Model '<x>' not found. The requested model does not exist in our
configuration or OpenRouter catalog." Re-selecting via /model fixed it until
the next resume — the reported symptom.

Add a model-name recovery tier between the base_url reverse-lookup and the
config fallback: find_custom_provider_identity_by_model() maps the stored
model back to the entry that serves it (model/default_model/models catalog,
dict and legacy list shapes). The session row always stores the model, so the
entry identity survives even when the row has no base_url AND the global
default points elsewhere.

All five bare-custom heal sites in tui_gateway/server.py now pass the model:
_ensure_session_db_row, _stored_session_runtime_overrides,
_runtime_model_config, _make_agent, and _model_picker_context.
2026-07-24 10:47:32 -07:00

2231 lines
99 KiB
Python

"""Shared runtime provider resolution for CLI, gateway, cron, and helpers."""
from __future__ import annotations
import logging
import os
import re
from urllib.parse import urlparse
from typing import Any, Dict, Optional
logger = logging.getLogger(__name__)
from hermes_cli import auth as auth_mod
from agent.credential_pool import (
CredentialPool,
PooledCredential,
credential_pool_matches_provider,
get_custom_provider_pool_key,
load_pool,
)
from agent.secret_scope import get_secret as _get_secret
from hermes_cli.auth import (
AuthError,
DEFAULT_CODEX_BASE_URL,
DEFAULT_QWEN_BASE_URL,
DEFAULT_XAI_OAUTH_BASE_URL,
PROVIDER_REGISTRY,
_agent_key_is_usable,
_nous_inference_env_override,
format_auth_error,
resolve_provider,
resolve_nous_runtime_credentials,
resolve_codex_runtime_credentials,
resolve_xai_oauth_runtime_credentials,
resolve_qwen_runtime_credentials,
resolve_api_key_provider_credentials,
resolve_external_process_provider_credentials,
has_usable_secret,
)
from hermes_cli.config import (
get_compatible_custom_providers,
load_config,
normalize_extra_headers,
)
from hermes_constants import OPENROUTER_BASE_URL
from utils import base_url_host_matches, base_url_hostname, env_int
def _getenv(name: str, default: str = "") -> str:
"""Profile-scoped replacement for ``os.getenv`` on credential/provider reads.
Routes through the secret scope (Workstream A): identical to ``os.getenv``
when multiplexing is off, scope-aware (and fail-closed on an unscoped read)
when on. Genuinely-global vars are handled inside ``get_secret`` and still
read ``os.environ``. Keeps the ``(name, default) -> str`` contract every
call site here already relies on.
"""
val = _get_secret(name, default)
return val if val is not None else default
def _normalize_custom_provider_name(value: str) -> str:
return value.strip().lower().replace(" ", "-")
def _loopback_hostname(host: str) -> bool:
h = (host or "").lower().rstrip(".")
return h in {"localhost", "127.0.0.1", "::1", "0.0.0.0"}
def _config_base_url_trustworthy_for_bare_custom(cfg_base_url: str, cfg_provider: str) -> bool:
"""Decide whether ``model.base_url`` may back bare ``custom`` runtime resolution.
GitHub #14676: the model picker can select Custom while ``model.provider`` still reflects a
previous provider. Reject non-loopback URLs unless the YAML provider is already ``custom``
(or one of the local-server aliases that resolve to ``custom`` — ollama, vllm, llamacpp, …),
so a stale OpenRouter/Z.ai base_url cannot hijack local ``custom`` sessions.
"""
cfg_provider_norm = (cfg_provider or "").strip().lower()
bu = (cfg_base_url or "").strip()
if not bu:
return False
if cfg_provider_norm == "custom":
return True
# GitHub #27132: provider aliases that resolve to "custom" at runtime
# (ollama, vllm, llamacpp, …) should be trusted the same way "custom"
# is, otherwise a legit LAN/WireGuard ollama endpoint silently falls
# through to OpenRouter.
try:
from hermes_cli.auth import resolve_provider as _resolve_provider
if _resolve_provider(cfg_provider_norm) == "custom":
return True
except Exception:
pass
if base_url_host_matches(bu, "openrouter.ai"):
return False
return _loopback_hostname(base_url_hostname(bu))
def _detect_api_mode_for_url(base_url: str) -> Optional[str]:
"""Auto-detect api_mode from the resolved base URL.
- Direct api.openai.com endpoints need the Responses API for GPT-5.x
tool calls with reasoning (chat/completions returns 400).
- Direct api.anthropic.com endpoints must use the native Messages
API (``/v1/messages``). Anthropic also exposes an OpenAI-compat
``/chat/completions`` shim on the same host, but Pro/Max OAuth
subscriptions are only billed against the native Messages route;
hitting the shim accounts against a separate "extra usage" pool
that is empty by default and surfaces as HTTP 400 "You're out of
extra usage." See issue #32243.
- Third-party Anthropic-compatible gateways (MiniMax, Zhipu GLM,
LiteLLM proxies, etc.) conventionally expose the native Anthropic
protocol under a ``/anthropic`` suffix — treat those as
``anthropic_messages`` transport instead of the default
``chat_completions``.
- Kimi Code's ``api.kimi.com/coding`` endpoint also speaks the
Anthropic Messages protocol (the /coding route accepts Claude
Code's native request shape).
"""
normalized = (base_url or "").strip().lower().rstrip("/")
hostname = base_url_hostname(base_url)
if hostname == "api.x.ai":
return "codex_responses"
if hostname == "api.openai.com":
return "codex_responses"
# Direct native Anthropic host: realign with providers.determine_api_mode,
# which already maps this host to anthropic_messages. The exact-hostname
# match rejects lookalike subdomains (api.anthropic.com.attacker.test) and
# path-segment spoofing (proxy.test/api.anthropic.com/v1). (#32243)
if hostname == "api.anthropic.com":
return "anthropic_messages"
path = urlparse(normalized).path.rstrip("/")
if path.endswith("/anthropic") or path.endswith("/anthropic/v1"):
return "anthropic_messages"
if hostname == "api.kimi.com" and "/coding" in normalized:
return "anthropic_messages"
return None
def _resolve_plain_custom_api_mode(model_cfg: Dict[str, Any], base_url: str) -> str:
"""Resolve api_mode for legacy/plain ``provider: custom`` endpoints.
Custom endpoints should stay conservative by default. Only direct OpenAI/xAI
URLs imply Responses API automatically; named custom providers can opt in via
their own ``api_mode`` field. This also prevents a stale persisted
``model.api_mode: codex_responses`` from forcing generic relays onto the
Responses path after upgrades or /reset.
"""
configured_mode = _parse_api_mode(model_cfg.get("api_mode"))
detected_mode = _detect_api_mode_for_url(base_url)
if configured_mode == "codex_responses" and detected_mode != "codex_responses":
logger.info(
"Ignoring persisted custom api_mode=codex_responses for non-OpenAI endpoint %s",
base_url or "(unknown)",
)
configured_mode = None
return configured_mode or detected_mode or "chat_completions"
def _host_derived_api_key(base_url: str) -> str:
"""Look up `<VENDOR>_API_KEY` in the env, derived from the base URL host.
Examples:
https://api.deepseek.com/v1 → DEEPSEEK_API_KEY
https://api.groq.com/openai/v1 → GROQ_API_KEY
https://api.mistral.ai/v1 → MISTRAL_API_KEY
https://generativelanguage.googleapis.com/v1beta/openai/ → GOOGLEAPIS_API_KEY
Returns the env value (stripped) or "". Never returns env vars whose names
are already explicitly checked elsewhere — those are handled by their own
host-gated paths (OPENAI/OPENROUTER/OLLAMA).
The vendor label is the *registrable* portion of the hostname: strip
``api.`` / ``www.`` prefixes, then take the second-to-last label
(``api.deepseek.com`` → ``deepseek``). Falls back to "" for hostnames
that don't yield a usable vendor label (IPs, loopback, single-label
hosts).
"""
hostname = base_url_hostname(base_url)
if not hostname:
return ""
# Reject IPv4 / IPv6 / loopback — no meaningful vendor label.
if any(ch.isdigit() for ch in hostname.split(".")[-1]):
# Last label starts with a digit → likely IP. (TLDs are never numeric.)
return ""
if hostname in ("localhost",) or ":" in hostname:
return ""
labels = [lbl for lbl in hostname.split(".") if lbl]
# Strip common API/CDN prefixes.
while labels and labels[0] in ("api", "www"):
labels.pop(0)
if len(labels) < 2:
return ""
# Take the *registrable* label (second-to-last). For typical provider
# hosts this is what users intuitively call "the vendor":
# deepseek.com → labels[-2] = "deepseek" ✓
# api.groq.com → groq.com → labels[-2] = "groq" ✓
# api.mistral.ai → labels[-2] = "mistral" ✓
# Crucially, lookalike hosts pick the ATTACKER's label, not the spoofed
# vendor:
# api.deepseek.com.attacker.test → labels[-2] = "attacker"
# so DEEPSEEK_API_KEY stays put and the chain falls through to
# no-key-required. This mirrors how `base_url_host_matches` resists the
# same lookalike attack for explicit hosts.
vendor = labels[-2]
# Sanitize to env var charset: A-Z, 0-9, underscore.
sanitized = "".join(ch if ch.isalnum() else "_" for ch in vendor).upper()
if not sanitized or not sanitized[0].isalpha():
return ""
# Don't re-derive env vars already handled by explicit host-gated paths.
if sanitized in ("OPENAI", "OPENROUTER", "OLLAMA"):
return ""
env_name = f"{sanitized}_API_KEY"
return (_getenv(env_name, "") or "").strip()
def _anthropic_base_url_override_ok(base_url: str) -> bool:
"""Decide whether a configured ``model.base_url`` may back native Anthropic.
Native ``provider: anthropic`` resolution honors ``model.base_url`` so users
can point at Anthropic-compatible endpoints (official Anthropic/Claude hosts,
Azure Foundry, MiniMax/Zhipu/LiteLLM-style ``/anthropic`` proxies, Kimi's
``/coding`` route). But a config can carry a *stale* non-Anthropic URL — e.g.
``provider: anthropic`` left with ``base_url: https://openrouter.ai/api/v1``
after a provider switch — which would route Anthropic OAuth/setup-token
traffic to an OpenAI-compatible aggregator and 404. Ignore those.
Returns True only when the URL plausibly speaks the Anthropic Messages
protocol; otherwise the caller falls back to ``https://api.anthropic.com``.
"""
candidate = (base_url or "").strip()
if not candidate:
return False
hostname = (base_url_hostname(candidate) or "").lower()
if not hostname:
return False
# Official Anthropic / Claude hosts.
if hostname == "api.anthropic.com" or hostname.endswith(".anthropic.com") or hostname.endswith(".claude.com"):
return True
# Azure Foundry Anthropic endpoints (handled specially downstream).
if hostname.endswith(".azure.com"):
return True
# Anthropic-compatible proxies conventionally expose the native Messages
# protocol under a ``/anthropic`` suffix, and Kimi under ``/coding`` — same
# signal _detect_api_mode_for_url() uses to pick anthropic_messages.
if _detect_api_mode_for_url(candidate) == "anthropic_messages":
return True
# Bare api.kimi.com without the /coding path is not an Anthropic endpoint.
return False
def _auto_detect_local_model(base_url: str) -> str:
"""Query a local server for its model name when only one model is loaded."""
if not base_url:
return ""
try:
import requests
url = base_url.rstrip("/")
if not url.endswith("/v1"):
url += "/v1"
resp = requests.get(url + "/models", timeout=5)
if resp.ok:
models = resp.json().get("data", [])
if len(models) == 1:
model_id = models[0].get("id", "")
if model_id:
return model_id
except Exception as exc:
# Log instead of silently swallowing — aids debugging when
# local model auto-detection fails unexpectedly.
logger.debug("Auto-detect model from %s failed: %s", base_url, exc)
return ""
def _get_model_config() -> Dict[str, Any]:
config = load_config()
model_cfg = config.get("model")
if isinstance(model_cfg, dict):
cfg = dict(model_cfg)
# Accept "model" as alias for "default" (users intuitively write model.model)
if not cfg.get("default") and cfg.get("model"):
cfg["default"] = cfg["model"]
default = (cfg.get("default") or "").strip()
base_url = (cfg.get("base_url") or "").strip()
is_local = "localhost" in base_url or "127.0.0.1" in base_url
is_fallback = not default
if is_local and is_fallback and base_url:
detected = _auto_detect_local_model(base_url)
if detected:
cfg["default"] = detected
return cfg
if isinstance(model_cfg, str) and model_cfg.strip():
return {"default": model_cfg.strip()}
return {}
def _provider_supports_explicit_api_mode(provider: Optional[str], configured_provider: Optional[str] = None) -> bool:
"""Check whether a persisted api_mode should be honored for a given provider.
Prevents stale api_mode from a previous provider leaking into a
different one after a model/provider switch. Only applies the
persisted mode when the config's provider matches the runtime
provider (or when no configured provider is recorded).
"""
normalized_provider = (provider or "").strip().lower()
normalized_configured = (configured_provider or "").strip().lower()
if not normalized_configured:
return True
if normalized_provider == "custom":
return normalized_configured == "custom" or normalized_configured.startswith("custom:")
return normalized_configured == normalized_provider
def _copilot_runtime_api_mode(
model_cfg: Dict[str, Any],
api_key: str,
*,
target_model: Optional[str] = None,
) -> str:
configured_provider = str(model_cfg.get("provider") or "").strip().lower()
configured_mode = _parse_api_mode(model_cfg.get("api_mode"))
if configured_mode and _provider_supports_explicit_api_mode("copilot", configured_provider):
return configured_mode
# Use the model being resolved for this runtime, not the persisted global
# default. MoA slots, fallback models, and mid-session model switches all
# resolve credentials for a target model that can differ from config.yaml's
# model.default. If we derive Copilot api_mode from the stale default, a
# Claude/Gemini MoA slot can inherit codex_responses from a GPT-5 default and
# fail with "model ... does not support Responses API".
model_name = str(target_model or model_cfg.get("default") or "").strip()
if not model_name:
return "chat_completions"
try:
from hermes_cli.models import copilot_model_api_mode
return copilot_model_api_mode(model_name, api_key=api_key)
except Exception:
return "chat_completions"
_VALID_API_MODES = {
"chat_completions",
"codex_responses",
"anthropic_messages",
"bedrock_converse",
# Optional opt-in: hand the entire turn to a `codex app-server` subprocess
# so terminal/file-ops/patching/sandboxing run inside Codex's own runtime
# instead of Hermes' tool dispatch. Gated behind config key
# `model.openai_runtime == "codex_app_server"` AND provider in
# {"openai", "openai-codex"}. Default is unchanged.
"codex_app_server",
}
def _parse_api_mode(raw: Any) -> Optional[str]:
"""Validate an api_mode value from config. Returns None if invalid."""
if isinstance(raw, str):
normalized = raw.strip().lower()
if normalized in _VALID_API_MODES:
return normalized
return None
def _nous_inference_base_url_override() -> str:
"""Return the trusted Nous runtime base URL override, if configured.
Delegates to ``auth._nous_inference_env_override`` so every
``NOUS_INFERENCE_BASE_URL`` read shares one normalization path
(trailing-slash stripping, blank → empty). The env source is trusted
and intentionally bypasses the network host allowlist there.
"""
return _nous_inference_env_override() or ""
def _maybe_apply_codex_app_server_runtime(
*,
provider: str,
api_mode: str,
model_cfg: Optional[Dict[str, Any]],
) -> str:
"""Optional opt-in: rewrite api_mode → "codex_app_server" for OpenAI/Codex
providers when the user has explicitly enabled that runtime via
`model.openai_runtime: codex_app_server` in config.yaml.
Default behavior is preserved: when the key is unset, "auto", or empty,
this function is a no-op. Only providers in {"openai", "openai-codex"}
are eligible — other providers (anthropic, openrouter, etc.) cannot be
rerouted through codex.
Returns the (possibly-rewritten) api_mode."""
if not model_cfg:
return api_mode
if provider not in {"openai", "openai-codex"}:
return api_mode
runtime = str(model_cfg.get("openai_runtime") or "").strip().lower()
if runtime == "codex_app_server":
return "codex_app_server"
return api_mode
def _resolve_runtime_from_pool_entry(
*,
provider: str,
entry: PooledCredential,
requested_provider: str,
model_cfg: Optional[Dict[str, Any]] = None,
pool: Optional[CredentialPool] = None,
target_model: Optional[str] = None,
) -> Dict[str, Any]:
model_cfg = model_cfg or _get_model_config()
# When the caller is resolving for a specific target model (e.g. a /model
# mid-session switch), prefer that over the persisted model.default. This
# prevents api_mode being computed from a stale config default that no
# longer matches the model actually being used — the bug that caused
# opencode-zen /v1 to be stripped for chat_completions requests when
# config.default was still a Claude model.
effective_model = (target_model or model_cfg.get("default") or "")
base_url = (getattr(entry, "runtime_base_url", None) or getattr(entry, "base_url", None) or "").rstrip("/")
api_key = getattr(entry, "runtime_api_key", None) or getattr(entry, "access_token", "")
api_mode = "chat_completions"
if provider == "openai-codex":
api_mode = "codex_responses"
base_url = base_url or DEFAULT_CODEX_BASE_URL
elif provider == "xai-oauth":
api_mode = "codex_responses"
base_url = base_url or DEFAULT_XAI_OAUTH_BASE_URL
elif provider == "qwen-oauth":
api_mode = "chat_completions"
base_url = base_url or DEFAULT_QWEN_BASE_URL
elif provider == "minimax-oauth":
# MiniMax OAuth tokens are valid only against the Anthropic Messages
# compatible endpoint. Do not honor stale model.api_mode values from a
# prior OpenAI-compatible provider, or the client will hit
# /chat/completions under /anthropic and receive a bare nginx 404.
api_mode = "anthropic_messages"
pconfig = PROVIDER_REGISTRY.get(provider)
base_url = base_url or (pconfig.inference_base_url if pconfig else "")
elif provider == "anthropic":
api_mode = "anthropic_messages"
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
cfg_base_url = ""
if cfg_provider == "anthropic":
cfg_base_url = str(model_cfg.get("base_url") or "").strip().rstrip("/")
if not _anthropic_base_url_override_ok(cfg_base_url):
cfg_base_url = ""
base_url = cfg_base_url or base_url or "https://api.anthropic.com"
elif provider == "openrouter":
base_url = base_url or OPENROUTER_BASE_URL
elif provider == "xai":
api_mode = "codex_responses"
elif provider == "nous":
api_mode = "chat_completions"
base_url = _nous_inference_base_url_override() or base_url
elif provider == "copilot":
api_mode = _copilot_runtime_api_mode(
model_cfg,
getattr(entry, "runtime_api_key", ""),
target_model=effective_model,
)
base_url = base_url or PROVIDER_REGISTRY["copilot"].inference_base_url
elif provider == "azure-foundry":
# Azure Foundry: read api_mode and base_url from config
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
if cfg_provider == "azure-foundry":
cfg_base_url = str(model_cfg.get("base_url") or "").strip().rstrip("/")
if cfg_base_url:
base_url = cfg_base_url
configured_mode = _parse_api_mode(model_cfg.get("api_mode"))
if configured_mode:
api_mode = configured_mode
# Model-family inference for GPT-5.x / codex / o1-o4: Azure rejects
# /chat/completions on these with 400 "operation unsupported" — see
# azure_foundry_model_api_mode() for rationale. Skip when the user
# explicitly picked anthropic_messages (Anthropic-style endpoint).
if effective_model and api_mode != "anthropic_messages":
try:
from hermes_cli.models import azure_foundry_model_api_mode
inferred = azure_foundry_model_api_mode(effective_model)
except Exception:
inferred = None
if inferred:
api_mode = inferred
# For Anthropic-style endpoints, strip /v1 suffix
if api_mode == "anthropic_messages":
base_url = re.sub(r"/v1/?$", "", base_url)
else:
configured_provider = str(model_cfg.get("provider") or "").strip().lower()
# Honour model.base_url from config.yaml when the configured provider
# matches this provider — same pattern as the Anthropic branch above.
# Only override when the pool entry has no explicit base_url (i.e. it
# fell back to the hardcoded default). Env var overrides win (#6039).
pconfig = PROVIDER_REGISTRY.get(provider)
pool_url_is_default = pconfig and base_url.rstrip("/") == pconfig.inference_base_url.rstrip("/")
if configured_provider == provider and pool_url_is_default:
cfg_base_url = str(model_cfg.get("base_url") or "").strip().rstrip("/")
if cfg_base_url:
base_url = cfg_base_url
configured_mode = _parse_api_mode(model_cfg.get("api_mode"))
if provider in {"opencode-zen", "opencode-go"}:
# Re-derive api_mode from the effective model rather than the
# persisted api_mode: the opencode providers serve both
# anthropic_messages and chat_completions models, so the previous
# session's mode must not leak across /model switches.
# Refs #16878.
from hermes_cli.models import opencode_model_api_mode
api_mode = opencode_model_api_mode(provider, effective_model)
elif configured_mode and _provider_supports_explicit_api_mode(provider, configured_provider):
api_mode = configured_mode
else:
# Auto-detect Anthropic-compatible endpoints (/anthropic suffix,
# Kimi /coding, api.openai.com → codex_responses, api.x.ai →
# codex_responses).
detected = _detect_api_mode_for_url(base_url)
if detected:
api_mode = detected
# OpenCode base URLs end with /v1 for OpenAI-compatible models, but the
# Anthropic SDK prepends its own /v1/messages to the base_url. Normalize
# symmetrically: strip /v1 for anthropic_messages, re-append it for
# chat_completions / codex_responses (heals a stripped URL persisted to
# model.base_url by an earlier switch into an anthropic-routed model).
if provider in {"opencode-zen", "opencode-go"}:
from hermes_cli.models import normalize_opencode_base_url
base_url = normalize_opencode_base_url(provider, api_mode, base_url)
# Optional opt-in: route OpenAI/Codex turns through `codex app-server`.
# Inert when `model.openai_runtime` is unset or "auto".
api_mode = _maybe_apply_codex_app_server_runtime(
provider=provider, api_mode=api_mode, model_cfg=model_cfg
)
if provider == "lmstudio":
base_url = auth_mod._normalize_lmstudio_runtime_base_url(base_url)
return {
"provider": provider,
"api_mode": api_mode,
"base_url": base_url,
"api_key": api_key,
"source": getattr(entry, "source", "pool"),
"credential_pool": pool,
"requested_provider": requested_provider,
}
def resolve_requested_provider(requested: Optional[str] = None) -> str:
"""Resolve provider request from explicit arg, config, then env."""
if requested and requested.strip():
return requested.strip().lower()
model_cfg = _get_model_config()
cfg_provider = model_cfg.get("provider")
if isinstance(cfg_provider, str) and cfg_provider.strip():
return cfg_provider.strip().lower()
# Prefer the persisted config selection over any stale shell/.env
# provider override so chat uses the endpoint the user last saved.
env_provider = _getenv("HERMES_INFERENCE_PROVIDER", "").strip().lower()
if env_provider:
return env_provider
return "auto"
def _try_resolve_from_custom_pool(
base_url: str,
provider_label: str,
api_mode_override: Optional[str] = None,
provider_name: Optional[str] = None,
) -> Optional[Dict[str, Any]]:
"""Check if a credential pool exists for a custom endpoint and return a runtime dict if so."""
pool_key = get_custom_provider_pool_key(base_url, provider_name=provider_name)
if not pool_key:
return None
try:
pool = load_pool(pool_key)
if not pool.has_credentials():
return None
entry = pool.select()
if entry is None:
return None
pool_api_key = getattr(entry, "runtime_api_key", None) or getattr(entry, "access_token", "")
if not pool_api_key:
return None
return {
"provider": provider_label,
"api_mode": api_mode_override or _detect_api_mode_for_url(base_url) or "chat_completions",
"base_url": base_url,
"api_key": pool_api_key,
"source": f"pool:{pool_key}",
"credential_pool": pool,
}
except Exception:
return None
def _lift_max_output_tokens(entry: Dict[str, Any], result: Dict[str, Any]) -> None:
"""Propagate a per-provider output cap onto the resolved runtime dict.
Accepts ``max_output_tokens`` or ``max_tokens`` on a ``custom_providers``
entry so a provider block can pin its own output limit. Gateway and CLI
map this onto ``AIAgent.max_tokens`` only when the top-level
``model.max_tokens`` isn't set, so the documented global key still wins.
"""
for _k in ("max_output_tokens", "max_tokens"):
_v = entry.get(_k)
if isinstance(_v, int) and _v > 0:
result["max_output_tokens"] = _v
return
def _lift_extra_headers(entry: Dict[str, Any], result: Dict[str, Any]) -> None:
"""Copy a validated ``extra_headers`` dict from a provider entry.
SECURITY: header values routinely carry credentials (Cloudflare Access
service tokens, proxy auth, custom bearer schemes). Never log them.
"""
extra_headers = normalize_extra_headers(entry.get("extra_headers"))
if extra_headers:
result["extra_headers"] = extra_headers
def _get_named_custom_provider(requested_provider: str) -> Optional[Dict[str, Any]]:
requested_norm = _normalize_custom_provider_name(requested_provider or "")
if not requested_norm:
return None
# Bare "custom" is normally an incomplete spec — the canonical form is
# "custom:<name>" — and is otherwise owned by the model.base_url "bare
# custom" trust path. BUT a user may literally name a ``providers:`` (or
# legacy ``custom_providers:``) entry "custom" (e.g. ``providers.custom``
# pointing at cliproxy). We used to return None here *before* scanning
# config, so such an entry was never matched and resolution fell through to
# the global default (Codex) — the cause of cron jobs with
# ``provider: "custom"`` failing with ``auth_unavailable: providers=codex``.
# Fall through to the config scan instead; if no entry is literally named
# "custom" it still returns None at the end, preserving the trust path.
# Raw names should only map to custom providers when they are not already
# valid built-in providers or aliases. Explicit menu keys like
# ``custom:local`` always target the saved custom provider. Bare "custom"
# is exempt from the shadow check — it is not a built-in to defer to.
if requested_norm == "auto":
return None
if requested_norm != "custom" and not requested_norm.startswith("custom:"):
try:
canonical = auth_mod.resolve_provider(requested_norm)
except AuthError:
pass
else:
# A user-declared ``custom_providers`` entry whose name matches
# only an *alias* (``kimi`` → built-in ``kimi-coding``) is the
# user's intended target — alias rewriting would otherwise hijack
# the request. We only defer to the built-in when the raw name is
# the canonical provider itself (``nous``, ``openrouter``, …) so
# accidentally shadowing a canonical provider still resolves to
# the built-in. See tests/hermes_cli/test_runtime_provider_resolution.py
# ``test_named_custom_provider_does_not_shadow_builtin_provider``.
if (canonical or "").strip().lower() == requested_norm:
return None
config = load_config()
# First check providers: dict (new-style user-defined providers)
providers = config.get("providers")
if isinstance(providers, dict):
from hermes_cli.config import is_provider_enabled
for ep_name, entry in providers.items():
if not isinstance(entry, dict):
continue
# Skip providers the user explicitly disabled via
# ``providers.<name>.enabled: false``. They remain in config
# so re-enabling is a one-line edit, but the resolver pretends
# they're not configured.
if not is_provider_enabled(entry):
continue
# Match exact name or normalized name
name_norm = _normalize_custom_provider_name(ep_name)
# Resolve the API key from the env var name stored in key_env
key_env = str(entry.get("key_env", "") or "").strip()
resolved_api_key = _getenv(key_env, "").strip() if key_env else ""
# Fall back to inline api_key when key_env is absent or unresolvable
if not resolved_api_key:
resolved_api_key = str(entry.get("api_key", "") or "").strip()
if requested_norm in {ep_name, name_norm, f"custom:{name_norm}"}:
# Found match by provider key
base_url = entry.get("api") or entry.get("url") or entry.get("base_url") or ""
if base_url:
result = {
"name": entry.get("name", ep_name),
"base_url": base_url.strip(),
"api_key": resolved_api_key,
"model": entry.get("default_model", ""),
}
extra_body = entry.get("extra_body")
if isinstance(extra_body, dict):
result["extra_body"] = dict(extra_body)
_lift_extra_headers(entry, result)
# The v11→v12 migration writes the API mode under the new
# ``transport`` field, but hand-edited configs may still
# use the legacy ``api_mode`` spelling. Accept both —
# the runtime normaliser ``_normalize_custom_provider_entry``
# already does, so without this lift every migrated config
# silently downgrades codex_responses / anthropic_messages
# providers to chat_completions in the resolved runtime.
api_mode = _parse_api_mode(entry.get("api_mode") or entry.get("transport"))
if api_mode:
result["api_mode"] = api_mode
_lift_max_output_tokens(entry, result)
return result
# Also check the 'name' field if present
display_name = entry.get("name", "")
if display_name:
display_norm = _normalize_custom_provider_name(display_name)
if requested_norm in {display_name, display_norm, f"custom:{display_norm}"}:
# Found match by display name
base_url = entry.get("api") or entry.get("url") or entry.get("base_url") or ""
if base_url:
result = {
"name": display_name,
"base_url": base_url.strip(),
"api_key": resolved_api_key,
"model": entry.get("default_model", ""),
}
extra_body = entry.get("extra_body")
if isinstance(extra_body, dict):
result["extra_body"] = dict(extra_body)
_lift_extra_headers(entry, result)
api_mode = _parse_api_mode(entry.get("api_mode") or entry.get("transport"))
if api_mode:
result["api_mode"] = api_mode
_lift_max_output_tokens(entry, result)
return result
# Fall back to custom_providers: list (legacy format)
custom_providers = config.get("custom_providers")
if isinstance(custom_providers, dict):
logger.warning(
"custom_providers in config.yaml is a dict, not a list. "
"Each entry must be prefixed with '-' in YAML. "
"Run 'hermes doctor' for details."
)
return None
custom_providers = get_compatible_custom_providers(config)
if not custom_providers:
return None
for entry in custom_providers:
if not isinstance(entry, dict):
continue
name = entry.get("name")
base_url = entry.get("base_url")
if not isinstance(name, str) or not isinstance(base_url, str):
continue
name_norm = _normalize_custom_provider_name(name)
menu_key = f"custom:{name_norm}"
provider_key = str(entry.get("provider_key", "") or "").strip()
provider_key_norm = _normalize_custom_provider_name(provider_key) if provider_key else ""
provider_menu_key = f"custom:{provider_key_norm}" if provider_key_norm else ""
if requested_norm not in {name_norm, menu_key, provider_key_norm, provider_menu_key}:
continue
result = {
"name": name.strip(),
"base_url": base_url.strip(),
"api_key": str(entry.get("api_key", "") or "").strip(),
}
key_env = str(entry.get("key_env", "") or "").strip()
if key_env:
result["key_env"] = key_env
if provider_key:
result["provider_key"] = provider_key
extra_body = entry.get("extra_body")
if isinstance(extra_body, dict):
result["extra_body"] = dict(extra_body)
_lift_extra_headers(entry, result)
api_mode = _parse_api_mode(entry.get("api_mode"))
if api_mode:
result["api_mode"] = api_mode
model_name = str(entry.get("model", "") or "").strip()
if model_name:
result["model"] = model_name
_lift_max_output_tokens(entry, result)
return result
return None
def has_named_custom_provider(requested_provider: str) -> bool:
"""Return True when config defines a custom provider matching the request.
Thin public wrapper around :func:`_get_named_custom_provider` so other
modules (e.g. the cronjob tool) can decide whether a provider name will
actually resolve to a configured ``providers:`` / ``custom_providers:``
entry — without reaching into a private helper or duplicating the scan.
"""
try:
return _get_named_custom_provider(requested_provider) is not None
except Exception:
return False
def find_custom_provider_identity(base_url: str) -> Optional[str]:
"""Map an endpoint URL back to its canonical ``custom:<name>`` menu key.
Returns the ``custom:<normalized-name>`` slug of the first ``providers:``
/ ``custom_providers:`` entry whose base_url matches, or ``None`` when no
entry owns the URL.
Session persistence stores the agent's *resolved* provider, and for every
named custom endpoint that is the literal string ``"custom"`` — the entry
name is lost, and the api_key is deliberately never persisted. The
endpoint URL is the one durable fact that survives the round-trip, so
this reverse lookup lets persist/rebuild paths recover the entry identity
(and with it key_env/api_key/api_mode resolution via
:func:`_get_named_custom_provider`) instead of failing with
``auth_unavailable`` or silently rebuilding with placeholder credentials.
"""
target = _normalize_base_url_for_match(base_url)
if not target:
return None
try:
config = load_config()
except Exception:
return None
providers = config.get("providers")
if isinstance(providers, dict):
for ep_name, entry in providers.items():
if not isinstance(entry, dict):
continue
entry_url = (
entry.get("api") or entry.get("url") or entry.get("base_url") or ""
)
if _normalize_base_url_for_match(entry_url) == target:
return f"custom:{_normalize_custom_provider_name(str(ep_name))}"
try:
custom_providers = get_compatible_custom_providers(config)
except Exception:
custom_providers = None
for entry in custom_providers or []:
if not isinstance(entry, dict):
continue
name = entry.get("name")
if not isinstance(name, str) or not name.strip():
continue
if _normalize_base_url_for_match(entry.get("base_url")) == target:
return f"custom:{_normalize_custom_provider_name(name)}"
return None
def find_custom_provider_identity_by_model(model: str) -> Optional[str]:
"""Map a model id back to the ``custom:<name>`` entry that serves it.
Returns the ``custom:<normalized-name>`` slug of the first ``providers:``
/ ``custom_providers:`` entry whose ``model`` / ``default_model`` matches,
or whose ``models`` catalog (dict or list shape) contains the id.
``None`` when no entry serves the model.
Companion to :func:`find_custom_provider_identity` (URL reverse-lookup)
for the persistence paths where no base_url survived the round-trip: the
session row always stores the model name, and a custom endpoint's model
ids (e.g. an in-house SFT checkpoint) virtually never collide with
catalog models on built-in providers, so the model is the last durable
fact that can recover the entry identity.
"""
target = str(model or "").strip().lower()
if not target:
return None
try:
config = load_config()
except Exception:
return None
def _entry_serves_model(entry: Dict[str, Any]) -> bool:
for key in ("model", "default_model"):
value = entry.get(key)
if isinstance(value, str) and value.strip().lower() == target:
return True
models = entry.get("models")
if isinstance(models, dict):
return any(
str(mid).strip().lower() == target for mid in models.keys()
)
if isinstance(models, list):
for item in models:
if isinstance(item, str) and item.strip().lower() == target:
return True
if isinstance(item, dict):
mid = item.get("id") or item.get("name")
if isinstance(mid, str) and mid.strip().lower() == target:
return True
return False
providers = config.get("providers")
if isinstance(providers, dict):
for ep_name, entry in providers.items():
if not isinstance(entry, dict):
continue
if _entry_serves_model(entry):
return f"custom:{_normalize_custom_provider_name(str(ep_name))}"
try:
custom_providers = get_compatible_custom_providers(config)
except Exception:
custom_providers = None
for entry in custom_providers or []:
if not isinstance(entry, dict):
continue
name = entry.get("name")
if not isinstance(name, str) or not name.strip():
continue
if _entry_serves_model(entry):
return f"custom:{_normalize_custom_provider_name(name)}"
return None
def canonical_custom_identity(
*,
base_url: Optional[str] = None,
config_provider: Optional[str] = None,
model: Optional[str] = None,
) -> Optional[str]:
"""Recover a routable ``custom:<name>`` identity for a bare custom provider.
The bare string ``"custom"`` is the *resolved billing class* shared by
every named ``providers:`` / ``custom_providers:`` entry — it is NOT a
routable provider identity (``resolve_runtime_provider("custom")`` falls
through to the OpenRouter default URL with no api_key, which surfaces to
the user as "No LLM provider configured").
Any code path that persists or restores a session's provider override
must run the resolved provider through this helper so a bare ``"custom"``
is upgraded back to its durable ``custom:<name>`` menu key. Three
recovery sources, in priority order:
1. ``base_url`` — reverse-lookup the entry that owns the endpoint URL
(the one fact that always survives the persistence round-trip when a
URL was recorded).
2. ``model`` — reverse-lookup the entry that serves the session's model
(``model``/``default_model``/``models`` catalog). The session row
always stores the model name, so when no base_url survived (the
recurring Desktop/TUI regression vector) the model is the last
session-scoped fact that can recover the entry — and unlike the
config fallback below it stays correct after the user points their
global default at a different provider.
3. ``config_provider`` — the active ``config.model.provider`` (or its
``provider``/``HERMES_INFERENCE_PROVIDER`` equivalent). When neither
a base_url nor a model recovered the entry, the configured provider
is the only durable identity left, so fall back to it when it names
a real entry.
Returns ``custom:<name>`` when a routable identity is recovered, else
``None`` (caller keeps whatever it had — bare ``"custom"`` only as a last
resort, e.g. a genuine ad-hoc endpoint with no config entry).
"""
# 1. Reverse-lookup by endpoint URL.
if base_url:
identity = find_custom_provider_identity(base_url)
if identity:
return identity
# 2. Reverse-lookup by the session's model name.
if model:
identity = find_custom_provider_identity_by_model(model)
if identity:
return identity
# 3. Fall back to the configured provider when it names a real entry.
candidate = str(config_provider or "").strip()
if not candidate:
try:
candidate = str(_get_model_config().get("provider") or "").strip()
except Exception:
candidate = ""
if not candidate:
candidate = os.environ.get("HERMES_INFERENCE_PROVIDER", "").strip()
candidate_norm = _normalize_custom_provider_name(candidate)
# A bare/non-routable candidate cannot heal a bare custom override.
if not candidate_norm or candidate_norm in {"custom", "auto", "openrouter"}:
return None
# Only return it when it actually resolves to a configured custom entry,
# so we never invent a `custom:<x>` that resolution can't honor.
try:
if _get_named_custom_provider(candidate) is not None:
if candidate_norm.startswith("custom:"):
return candidate_norm
return f"custom:{candidate_norm}"
except Exception:
pass
return None
def _normalize_base_url_for_match(value) -> str:
return str(value or "").strip().rstrip("/").lower()
def _custom_provider_request_overrides(custom_provider: Dict[str, Any]) -> Dict[str, Any]:
extra_body = custom_provider.get("extra_body")
if not isinstance(extra_body, dict) or not extra_body:
return {}
return {"extra_body": dict(extra_body)}
def _resolve_named_custom_runtime(
*,
requested_provider: str,
explicit_api_key: Optional[str] = None,
explicit_base_url: Optional[str] = None,
) -> Optional[Dict[str, Any]]:
# Bare `provider="custom"` with an explicit base_url (e.g. propagated
# from a `model_aliases:` direct-alias resolution) — build a runtime
# directly so the alias's base_url actually takes effect.
#
# GitHub #27132: provider aliases that resolve to "custom" at runtime
# (ollama, vllm, llamacpp, …) are treated identically here, so a YAML
# `provider: ollama` with a LAN/WireGuard `base_url` doesn't silently
# fall through to OpenRouter.
requested_norm = (requested_provider or "").strip().lower()
if requested_norm and requested_norm != "custom":
try:
from hermes_cli.auth import resolve_provider as _resolve_provider
if _resolve_provider(requested_norm) == "custom":
requested_norm = "custom"
except Exception:
pass
if requested_norm == "custom" and explicit_base_url:
base_url = explicit_base_url.strip().rstrip("/")
# Check credential pool first — mirrors the named-custom-provider path
# so bare `provider: custom` with a configured custom_providers entry
# also gets its api_key from the pool instead of env var fallbacks.
pool_result = _try_resolve_from_custom_pool(base_url, "custom", None)
if pool_result:
pool_result["source"] = "direct-alias"
return pool_result
_da_is_openai_url = base_url_host_matches(base_url, "openai.com") or base_url_host_matches(base_url, "openai.azure.com")
_da_is_openrouter = base_url_host_matches(base_url, "openrouter.ai")
api_key_candidates = [
(explicit_api_key or "").strip(),
# Gate env key fallbacks on authoritative hosts (#28660)
(_getenv("OPENAI_API_KEY", "").strip() if _da_is_openai_url else ""),
(_getenv("OPENROUTER_API_KEY", "").strip() if _da_is_openrouter else ""),
# Bonus (#28660): derive `<VENDOR>_API_KEY` from the host so users
# who set DEEPSEEK_API_KEY / GROQ_API_KEY / MISTRAL_API_KEY get the
# intuitive match without configuring `custom_providers` first.
_host_derived_api_key(base_url),
]
api_key = next(
(c for c in api_key_candidates if has_usable_secret(c)),
"",
) or "no-key-required"
return {
"provider": "custom",
"api_mode": _detect_api_mode_for_url(base_url) or "chat_completions",
"base_url": base_url,
"api_key": api_key,
"source": "direct-alias",
"requested_provider": requested_provider,
}
custom_provider = _get_named_custom_provider(requested_provider)
if not custom_provider:
return None
base_url = (
(explicit_base_url or "").strip()
or custom_provider.get("base_url", "")
).rstrip("/")
if not base_url:
return None
# Check if a credential pool exists for this custom endpoint
pool_result = _try_resolve_from_custom_pool(base_url, "custom", custom_provider.get("api_mode"), provider_name=custom_provider.get("name"))
if pool_result:
# Propagate the model name even when using pooled credentials —
# the pool doesn't know about the custom_providers model field.
model_name = custom_provider.get("model")
if model_name:
pool_result["model"] = model_name
if isinstance(custom_provider.get("max_output_tokens"), int):
pool_result["max_output_tokens"] = custom_provider["max_output_tokens"]
request_overrides = _custom_provider_request_overrides(custom_provider)
if request_overrides:
pool_result["request_overrides"] = {
**dict(pool_result.get("request_overrides") or {}),
**request_overrides,
}
# Propagate extra_headers so custom-provider auth headers (e.g.
# Cloudflare Access service tokens) still apply with pooled
# credentials. NEVER log the values.
if custom_provider.get("extra_headers"):
pool_result["extra_headers"] = dict(custom_provider["extra_headers"])
return pool_result
_cp_is_openai_url = base_url_host_matches(base_url, "openai.com") or base_url_host_matches(base_url, "openai.azure.com")
_cp_is_openrouter = base_url_host_matches(base_url, "openrouter.ai")
api_key_candidates = [
(explicit_api_key or "").strip(),
str(custom_provider.get("api_key", "") or "").strip(),
_getenv(str(custom_provider.get("key_env", "") or "").strip(), "").strip(),
# Gate provider env keys on their authoritative hosts — sending
# OPENAI_API_KEY to a local-llm endpoint leaks credentials (#28660).
(_getenv("OPENAI_API_KEY", "").strip() if _cp_is_openai_url else ""),
(_getenv("OPENROUTER_API_KEY", "").strip() if _cp_is_openrouter else ""),
# Bonus (#28660): derive `<VENDOR>_API_KEY` from the host as a final
# fallback when key_env wasn't set explicitly.
_host_derived_api_key(base_url),
]
api_key = next((candidate for candidate in api_key_candidates if has_usable_secret(candidate)), "")
result = {
"provider": "custom",
"api_mode": custom_provider.get("api_mode")
or _detect_api_mode_for_url(base_url)
or "chat_completions",
"base_url": base_url,
"api_key": api_key or "no-key-required",
"source": f"custom_provider:{custom_provider.get('name', requested_provider)}",
}
# Propagate the model name so callers can override self.model when the
# provider name differs from the actual model string the API expects.
if custom_provider.get("model"):
result["model"] = custom_provider["model"]
if isinstance(custom_provider.get("max_output_tokens"), int):
result["max_output_tokens"] = custom_provider["max_output_tokens"]
# Per-provider extra HTTP headers (proxies, gateways, custom auth).
# Values may carry credentials — NEVER log them.
if custom_provider.get("extra_headers"):
result["extra_headers"] = dict(custom_provider["extra_headers"])
request_overrides = _custom_provider_request_overrides(custom_provider)
if request_overrides:
result["request_overrides"] = request_overrides
return result
def _resolve_openrouter_runtime(
*,
requested_provider: str,
explicit_api_key: Optional[str] = None,
explicit_base_url: Optional[str] = None,
) -> Dict[str, Any]:
model_cfg = _get_model_config()
cfg_base_url = model_cfg.get("base_url") if isinstance(model_cfg.get("base_url"), str) else ""
cfg_provider = model_cfg.get("provider") if isinstance(model_cfg.get("provider"), str) else ""
cfg_api_key = ""
for k in ("api_key", "api"):
v = model_cfg.get(k)
if isinstance(v, str) and v.strip():
cfg_api_key = v.strip()
break
requested_norm = (requested_provider or "").strip().lower()
cfg_provider = cfg_provider.strip().lower()
# GitHub #27132: provider aliases that resolve to "custom" (ollama,
# vllm, llamacpp, …) follow the same base_url trust + routing rules
# as a bare `provider: custom`. Normalising here keeps every check
# below — `requested_norm == "custom"`, the trust check, the pool
# gate up the stack — alias-aware without duplicating the alias map.
if requested_norm and requested_norm != "custom":
try:
from hermes_cli.auth import resolve_provider as _resolve_provider
if _resolve_provider(requested_norm) == "custom":
requested_norm = "custom"
except Exception:
pass
env_openrouter_base_url = _getenv("OPENROUTER_BASE_URL", "").strip()
env_custom_base_url = _getenv("CUSTOM_BASE_URL", "").strip()
# Use config base_url when available and the provider context matches.
# OPENAI_BASE_URL env var is no longer consulted — config.yaml is
# the single source of truth for endpoint URLs.
use_config_base_url = False
if cfg_base_url.strip() and not explicit_base_url:
if requested_norm == "auto":
if not cfg_provider or cfg_provider == "auto":
use_config_base_url = True
elif requested_norm == "custom" and _config_base_url_trustworthy_for_bare_custom(
cfg_base_url, cfg_provider
):
use_config_base_url = True
base_url = (
(explicit_base_url or "").strip()
or env_custom_base_url
or (cfg_base_url.strip() if use_config_base_url else "")
or env_openrouter_base_url
or OPENROUTER_BASE_URL
).rstrip("/")
# Choose API key based on whether the resolved base_url targets OpenRouter.
# When hitting OpenRouter, prefer OPENROUTER_API_KEY (issue #289).
# When hitting a custom endpoint (e.g. Z.ai, local LLM), prefer
# OPENAI_API_KEY so the OpenRouter key doesn't leak to an unrelated
# provider (issues #420, #560).
_is_openrouter_url = base_url_host_matches(base_url, "openrouter.ai")
# Also treat explicitly-configured OpenRouter mirrors/proxies as OpenRouter
# for key selection — if the user set OPENROUTER_BASE_URL or requested
# provider=openrouter explicitly, OPENROUTER_API_KEY should still be used.
_is_openrouter_context = _is_openrouter_url or (
requested_norm == "openrouter"
and (env_openrouter_base_url or base_url == env_openrouter_base_url)
and base_url == (env_openrouter_base_url or "").rstrip("/")
)
if _is_openrouter_context:
api_key_candidates = [
explicit_api_key,
_getenv("OPENROUTER_API_KEY"),
_getenv("OPENAI_API_KEY"),
]
else:
# Custom endpoint: use api_key from config when using config base_url (#1760).
# When the endpoint is Ollama Cloud, check OLLAMA_API_KEY — it's
# the canonical env var for ollama.com authentication. Match on
# HOST, not substring — a custom base_url whose path contains
# "ollama.com" (e.g. http://127.0.0.1/ollama.com/v1) or whose
# hostname is a look-alike (ollama.com.attacker.test) must not
# receive the Ollama credential. See GHSA-76xc-57q6-vm5m.
_is_ollama_url = base_url_host_matches(base_url, "ollama.com")
_is_openai_url = base_url_host_matches(base_url, "openai.com")
_is_openai_azure = base_url_host_matches(base_url, "openai.azure.com")
# Gate each provider key on its own host — sending OPENAI_API_KEY or
# OPENROUTER_API_KEY to an unrelated custom endpoint (DeepSeek, Groq,
# Mistral, …) leaks credentials and causes 401s (issue #28660).
# Mirrors the OLLAMA_API_KEY host-gate added in GHSA-76xc-57q6-vm5m.
api_key_candidates = [
explicit_api_key,
(cfg_api_key if use_config_base_url else ""),
(_getenv("OLLAMA_API_KEY") if _is_ollama_url else ""),
(_getenv("OPENAI_API_KEY") if (_is_openai_url or _is_openai_azure) else ""),
(_getenv("OPENROUTER_API_KEY") if _is_openrouter_url else ""),
# Bonus (#28660): derive `<VENDOR>_API_KEY` from the host so users
# who set DEEPSEEK_API_KEY / GROQ_API_KEY / MISTRAL_API_KEY get the
# intuitive match. Helper returns "" for IPs/loopback and for env
# vars already handled by the explicit host-gated paths above.
_host_derived_api_key(base_url),
]
api_key = next(
(str(candidate or "").strip() for candidate in api_key_candidates if has_usable_secret(candidate)),
"",
)
source = "explicit" if (explicit_api_key or explicit_base_url) else "env/config"
# When "custom" was explicitly requested, preserve that as the provider
# name instead of silently relabeling to "openrouter" (#2562).
# Also provide a placeholder API key for local servers that don't require
# authentication — the OpenAI SDK requires a non-empty api_key string.
effective_provider = "custom" if requested_norm == "custom" else "openrouter"
# For custom endpoints, check if a credential pool exists
if effective_provider == "custom" and base_url:
# Pass requested_provider so pool lookup prefers name match over base_url,
# fixing credential mix-ups when multiple custom providers share a base_url.
pool_result = _try_resolve_from_custom_pool(
base_url, effective_provider, _parse_api_mode(model_cfg.get("api_mode")),
provider_name=requested_provider if requested_norm != "custom" else None,
)
if pool_result:
return pool_result
if effective_provider == "custom" and not api_key and not _is_openrouter_url:
api_key = "no-key-required"
return {
"provider": effective_provider,
"api_mode": _resolve_plain_custom_api_mode(model_cfg, base_url)
if effective_provider == "custom"
else _parse_api_mode(model_cfg.get("api_mode"))
or _detect_api_mode_for_url(base_url)
or "chat_completions",
"base_url": base_url,
"api_key": api_key,
"source": source,
}
def _resolve_azure_foundry_runtime(
*,
requested_provider: str,
model_cfg: Dict[str, Any],
explicit_api_key: Optional[str] = None,
explicit_base_url: Optional[str] = None,
target_model: Optional[str] = None,
) -> Dict[str, Any]:
"""Resolve an Azure Foundry runtime entry.
Reads ``model.base_url`` + ``model.api_mode`` from config.yaml (or
explicit overrides), pulls the API key from ``.env`` / env var, and
strips a trailing ``/v1`` for Anthropic-style endpoints because the
Anthropic SDK appends ``/v1/messages`` internally.
When ``model.auth_mode == "entra_id"`` (and the model is OpenAI-style),
the returned ``api_key`` is a zero-arg callable produced by
:func:`agent.azure_identity_adapter.build_token_provider` rather than
a string. Downstream code that constructs an OpenAI SDK client passes
this through unchanged (the SDK accepts ``Callable[[], str]`` for
``api_key`` and calls it before every request). Code paths that need
a string (logging, manual HTTP probes, header injection) must use the
helpers in ``agent.azure_identity_adapter``.
Raises :class:`AuthError` when required values are missing.
"""
explicit_api_key = str(explicit_api_key or "").strip()
explicit_base_url_clean = str(explicit_base_url or "").strip().rstrip("/")
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
cfg_base_url = ""
cfg_api_mode = "chat_completions"
cfg_auth_mode = "api_key"
cfg_entra: Dict[str, Any] = {}
if cfg_provider == "azure-foundry":
cfg_base_url = str(model_cfg.get("base_url") or "").strip().rstrip("/")
cfg_api_mode = _parse_api_mode(model_cfg.get("api_mode")) or "chat_completions"
cfg_auth_mode = str(model_cfg.get("auth_mode") or "api_key").strip().lower() or "api_key"
_entra = model_cfg.get("entra")
if isinstance(_entra, dict):
cfg_entra = _entra
# Model-family inference: Azure Foundry deploys GPT-5.x / codex / o1-o4
# reasoning models as Responses-API-only. Calling /chat/completions
# against them returns 400 "The requested operation is unsupported."
# Upgrade api_mode when the model name matches, unless the user has
# explicitly chosen anthropic_messages (Anthropic-style endpoint).
effective_model = str(target_model or model_cfg.get("default") or "").strip()
if effective_model and cfg_api_mode != "anthropic_messages":
try:
from hermes_cli.models import azure_foundry_model_api_mode
inferred = azure_foundry_model_api_mode(effective_model)
except Exception:
inferred = None
if inferred:
cfg_api_mode = inferred
env_base_url = _getenv("AZURE_FOUNDRY_BASE_URL", "").strip().rstrip("/")
base_url = explicit_base_url_clean or cfg_base_url or env_base_url
if not base_url:
raise AuthError(
"Azure Foundry requires a base URL. Set it via 'hermes model' or "
"the AZURE_FOUNDRY_BASE_URL environment variable."
)
# Anthropic SDK appends /v1/messages itself, so strip any trailing /v1
# we inherited from the configured base_url to avoid double-/v1 paths.
if cfg_api_mode == "anthropic_messages":
base_url = re.sub(r"/v1/?$", "", base_url)
# ── Entra ID (Microsoft Foundry recommended path) ──────────────────
#
# OpenAI-style endpoints use the OpenAI SDK's native callable
# ``api_key=`` contract — the SDK mints a fresh JWT per request
# automatically.
#
# Anthropic-style endpoints (Claude on Foundry) take the callable
# too: :func:`agent.anthropic_adapter.build_anthropic_client`
# detects the callable and constructs an ``httpx.Client`` with a
# request event hook that injects a fresh ``Authorization: Bearer``
# header per request (the Anthropic SDK does not accept callables
# natively). From the runtime resolver's perspective both modes
# are identical — return the callable api_key and let the
# downstream SDK wrapper handle the contract difference.
if cfg_auth_mode == "entra_id":
if explicit_api_key:
# User passed --api-key on the CLI while config says entra_id —
# honour the explicit string (escape hatch for one-off testing).
api_key: Any = explicit_api_key
source = "explicit"
auth_mode = "api_key"
else:
try:
from agent.azure_identity_adapter import (
EntraIdentityConfig,
SCOPE_AI_AZURE_DEFAULT,
build_token_provider,
)
except Exception as exc:
raise AuthError(
"Azure Foundry Entra ID auth requires the 'azure-identity' "
"package. Install it with: pip install azure-identity "
f"(import failed: {exc})"
) from exc
scope = (
str(cfg_entra.get("scope") or "").strip()
or SCOPE_AI_AZURE_DEFAULT
)
try:
entra_config = EntraIdentityConfig(
scope=scope,
)
token_provider = build_token_provider(config=entra_config)
except ImportError as exc:
raise AuthError(str(exc)) from exc
api_key = token_provider
source = "entra_id"
auth_mode = "entra_id"
clean_entra = {}
if auth_mode == "entra_id":
configured_scope = str(cfg_entra.get("scope") or "").strip()
if configured_scope:
clean_entra["scope"] = configured_scope
return {
"provider": "azure-foundry",
"api_mode": cfg_api_mode,
"base_url": base_url,
"api_key": api_key,
"auth_mode": auth_mode,
"entra": clean_entra,
"source": source,
"requested_provider": requested_provider,
}
# ── Static API key (legacy / default) ──────────────────────────────
api_key = explicit_api_key
if not api_key:
try:
from hermes_cli.config import get_env_value
api_key = get_env_value("AZURE_FOUNDRY_API_KEY") or ""
except Exception:
api_key = ""
if not api_key:
api_key = _getenv("AZURE_FOUNDRY_API_KEY", "").strip()
if not api_key:
raise AuthError(
"Azure Foundry requires an API key. Set AZURE_FOUNDRY_API_KEY in "
"~/.hermes/.env or run 'hermes model' to configure. To use "
"keyless Microsoft Entra ID auth instead, set "
"model.auth_mode: entra_id in config.yaml (or pick "
"'Microsoft Entra ID' in 'hermes model')."
)
source = "explicit" if (explicit_api_key or explicit_base_url) else "config"
return {
"provider": "azure-foundry",
"api_mode": cfg_api_mode,
"base_url": base_url,
"api_key": api_key,
"auth_mode": "api_key",
"source": source,
"requested_provider": requested_provider,
}
def _resolve_explicit_runtime(
*,
provider: str,
requested_provider: str,
model_cfg: Dict[str, Any],
explicit_api_key: Optional[str] = None,
explicit_base_url: Optional[str] = None,
target_model: Optional[str] = None,
) -> Optional[Dict[str, Any]]:
explicit_api_key = str(explicit_api_key or "").strip()
explicit_base_url = str(explicit_base_url or "").strip().rstrip("/")
if not explicit_api_key and not explicit_base_url:
return None
if provider == "anthropic":
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
cfg_base_url = ""
if cfg_provider == "anthropic":
cfg_base_url = str(model_cfg.get("base_url") or "").strip().rstrip("/")
if not _anthropic_base_url_override_ok(cfg_base_url):
cfg_base_url = ""
base_url = explicit_base_url or cfg_base_url or "https://api.anthropic.com"
api_key = explicit_api_key
if not api_key:
from agent.anthropic_adapter import resolve_anthropic_token
api_key = resolve_anthropic_token()
if not api_key:
raise AuthError(
"No Anthropic credentials found. Set ANTHROPIC_TOKEN or ANTHROPIC_API_KEY, "
"run 'claude setup-token', or authenticate with 'claude /login'."
)
return {
"provider": "anthropic",
"api_mode": "anthropic_messages",
"base_url": base_url,
"api_key": api_key,
"source": "explicit",
"requested_provider": requested_provider,
}
if provider == "openai-codex":
base_url = explicit_base_url or DEFAULT_CODEX_BASE_URL
api_key = explicit_api_key
last_refresh = None
if not api_key:
creds = resolve_codex_runtime_credentials()
api_key = creds.get("api_key", "")
last_refresh = creds.get("last_refresh")
if not explicit_base_url:
base_url = creds.get("base_url", "").rstrip("/") or base_url
return {
"provider": "openai-codex",
"api_mode": "codex_responses",
"base_url": base_url,
"api_key": api_key,
"source": "explicit",
"last_refresh": last_refresh,
"requested_provider": requested_provider,
}
if provider == "nous":
state = auth_mod.get_provider_auth_state("nous") or {}
base_url = (
explicit_base_url
or _nous_inference_base_url_override()
or str(state.get("inference_base_url") or auth_mod.DEFAULT_NOUS_INFERENCE_URL).strip().rstrip("/")
)
# Only use the agent_key compatibility field for inference when it
# contains a NAS invoke JWT; raw OAuth access_token fallback is handled
# by resolve_nous_runtime_credentials().
api_key = explicit_api_key or (
str(state.get("agent_key") or "").strip()
if _agent_key_is_usable(
state,
max(60, env_int("HERMES_NOUS_MIN_KEY_TTL_SECONDS", 1800)),
)
else ""
)
expires_at = state.get("agent_key_expires_at") or state.get("expires_at")
if not api_key:
creds = resolve_nous_runtime_credentials(
timeout_seconds=float(_getenv("HERMES_NOUS_TIMEOUT_SECONDS", "15")),
)
api_key = creds.get("api_key", "")
expires_at = creds.get("expires_at")
if not explicit_base_url:
base_url = creds.get("base_url", "").rstrip("/") or base_url
return {
"provider": "nous",
"api_mode": "chat_completions",
"base_url": base_url,
"api_key": api_key,
"source": "explicit",
"expires_at": expires_at,
"requested_provider": requested_provider,
}
# Azure Foundry: user-configured endpoint with selectable API mode
if provider == "azure-foundry":
return _resolve_azure_foundry_runtime(
requested_provider=requested_provider,
model_cfg=model_cfg,
explicit_api_key=explicit_api_key,
explicit_base_url=explicit_base_url,
)
pconfig = PROVIDER_REGISTRY.get(provider)
if pconfig and pconfig.auth_type == "api_key":
env_url = ""
if pconfig.base_url_env_var:
env_url = _getenv(pconfig.base_url_env_var, "").strip().rstrip("/")
base_url = explicit_base_url
if not base_url:
if provider in {"kimi-coding", "kimi-coding-cn"}:
creds = resolve_api_key_provider_credentials(provider)
base_url = creds.get("base_url", "").rstrip("/")
else:
base_url = env_url or pconfig.inference_base_url
api_key = explicit_api_key
if not api_key:
creds = resolve_api_key_provider_credentials(provider)
api_key = creds.get("api_key", "")
if not base_url:
base_url = creds.get("base_url", "").rstrip("/")
api_mode = "chat_completions"
if provider == "copilot":
api_mode = _copilot_runtime_api_mode(
model_cfg,
api_key,
target_model=target_model,
)
elif provider == "xai":
api_mode = "codex_responses"
else:
configured_mode = _parse_api_mode(model_cfg.get("api_mode"))
if configured_mode:
api_mode = configured_mode
else:
# Auto-detect from URL (Anthropic /anthropic suffix,
# api.openai.com → Responses, Kimi /coding, etc.).
detected = _detect_api_mode_for_url(base_url)
if detected:
api_mode = detected
return {
"provider": provider,
"api_mode": api_mode,
"base_url": base_url.rstrip("/"),
"api_key": api_key,
"source": "explicit",
"requested_provider": requested_provider,
}
return None
def resolve_runtime_provider(
*,
requested: Optional[str] = None,
explicit_api_key: Optional[str] = None,
explicit_base_url: Optional[str] = None,
target_model: Optional[str] = None,
) -> Dict[str, Any]:
"""Resolve runtime provider credentials for agent execution.
target_model: Optional override for model_cfg.get("default") when
computing provider-specific api_mode (e.g. OpenCode Zen/Go where different
models route through different API surfaces). Callers performing an
explicit mid-session model switch should pass the new model here so
api_mode is derived from the model they are switching TO, not the stale
persisted default. Other callers can leave it None to preserve existing
behavior (api_mode derived from config).
"""
requested_provider = resolve_requested_provider(requested)
# Honour ``providers.<name>.enabled: false`` for BOTH user-defined
# custom providers and the built-in ones (openai / anthropic /
# openrouter / gemini / ...). The earlier ``_get_named_custom_provider``
# gate only covers custom blocks — built-in resolution paths
# (``resolve_provider`` + pool / explicit / generic runtime) walk
# their own short-circuits and would otherwise return stale config
# for a provider the user explicitly turned off.
#
# Fail fast with a typed error so the fallback chain can advance to
# the next provider instead of using a disabled one.
from hermes_cli.config import is_provider_enabled, load_config
_full_cfg = load_config()
_provs_cfg = _full_cfg.get("providers") if isinstance(_full_cfg, dict) else None
if isinstance(_provs_cfg, dict):
_block = _provs_cfg.get(requested_provider)
if isinstance(_block, dict) and not is_provider_enabled(_block):
raise ValueError(
f"provider {requested_provider!r} is disabled in config "
f"(providers.{requested_provider}.enabled: false)"
)
if requested_provider == "moa":
return {
"provider": "moa",
"api_mode": "chat_completions",
"base_url": "moa://local",
"api_key": "moa-virtual-provider",
"source": "moa-virtual-provider",
"requested_provider": requested_provider,
}
# Azure Anthropic short-circuit: when explicitly targeting an Azure endpoint
# with provider="anthropic", bypass _resolve_named_custom_runtime (which would
# return provider="custom" with chat_completions api_mode and no valid key).
# Instead, use the Azure key directly with anthropic_messages api_mode.
_eff_base = (explicit_base_url or "").strip()
if requested_provider == "anthropic" and "azure.com" in _eff_base:
_azure_key = (
(explicit_api_key or "").strip()
or _getenv("AZURE_ANTHROPIC_KEY", "").strip()
or _getenv("ANTHROPIC_API_KEY", "").strip()
)
return {
"provider": "anthropic",
"api_mode": "anthropic_messages",
"base_url": _eff_base.rstrip("/"),
"api_key": _azure_key,
"source": "azure-explicit",
"requested_provider": requested_provider,
}
# Azure Foundry: user-configured endpoint with selectable API mode
# (OpenAI-style chat_completions or Anthropic-style anthropic_messages).
# Resolve before the custom-runtime / pool / generic paths so Azure
# config is always picked up from model.base_url + model.api_mode,
# regardless of whether the caller passed explicit_* args.
if requested_provider == "azure-foundry":
azure_runtime = _resolve_azure_foundry_runtime(
requested_provider=requested_provider,
model_cfg=_get_model_config(),
explicit_api_key=explicit_api_key,
explicit_base_url=explicit_base_url,
target_model=target_model,
)
return azure_runtime
# Vertex AI: OAuth2-token provider (Gemini via the OpenAI-compatible
# endpoint). Resolve BEFORE the custom-runtime / credential-pool / generic
# paths. The credential *path* (GOOGLE_APPLICATION_CREDENTIALS /
# VERTEX_CREDENTIALS_PATH) must never reach the credential pool or the
# generic api_key resolver — those would treat the file path as a static
# API key. Instead we mint a short-lived OAuth2 access token here and hand
# it to the standard OpenAI client as api_key, with base_url computed from
# the project ID + region. The token is re-minted per call (5-min refresh
# margin) by get_vertex_config(); mid-session expiry is additionally
# recovered on 401 by run_agent._try_refresh_vertex_client_credentials().
if requested_provider in ("vertex", "google-vertex", "vertex-ai", "gcp-vertex", "vertexai"):
from agent.vertex_adapter import get_vertex_config
token, base_url = get_vertex_config()
if not token or not base_url:
raise AuthError(
"Vertex AI credentials could not be resolved. Vertex uses "
"OAuth2 (not a static API key): provide a service-account JSON "
"via GOOGLE_APPLICATION_CREDENTIALS (or VERTEX_CREDENTIALS_PATH) "
"in ~/.hermes/.env, or run 'gcloud auth application-default "
"login' for ADC. Set the GCP project/region under vertex: in "
"config.yaml if they aren't embedded in the credentials. "
"Run `hermes setup` to install Vertex support."
)
return {
"provider": "vertex",
"api_mode": "chat_completions",
"base_url": base_url.rstrip("/"),
"api_key": token,
"source": "vertex-oauth",
"requested_provider": requested_provider,
}
custom_runtime = _resolve_named_custom_runtime(
requested_provider=requested_provider,
explicit_api_key=explicit_api_key,
explicit_base_url=explicit_base_url,
)
if custom_runtime:
custom_runtime["requested_provider"] = requested_provider
return custom_runtime
# If provider is "auto" (or unset) but config.yaml has an explicit base_url
# pointing at a custom/local endpoint (e.g. Ollama at localhost:11434),
# route through the OpenAI-compatible resolver instead of letting
# resolve_provider() pick up an ANTHROPIC_API_KEY or OPENAI_API_KEY from
# the environment and send the request to a cloud API. Fixes #3846.
if not explicit_base_url and not explicit_api_key:
model_cfg = _get_model_config()
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
cfg_base_url = str(model_cfg.get("base_url") or "").strip()
if cfg_base_url and cfg_provider in ("auto", ""):
# Check that base_url isn't one of the well-known cloud API roots
# (OpenRouter, Anthropic, OpenAI). If it's something else (Ollama,
# LM Studio, vLLM, …) we honour it directly. The full detection
# logic lives in _resolve_openrouter_runtime; we just skip the
# resolve_provider() call so env-var credentials don't shadow it.
# Match on HOST, not substring, so a look-alike base_url
# (e.g. http://api.anthropic.com.attacker.test/v1, or one whose
# path merely contains "openai.com") cannot evade the bypass and
# leak a cloud credential. Mirrors the host-gating used for
# API-key selection in _resolve_openrouter_runtime.
_known_cloud_hosts = (
"openrouter.ai",
"anthropic.com",
"openai.com",
)
if not any(
base_url_host_matches(cfg_base_url, host)
for host in _known_cloud_hosts
):
runtime = _resolve_openrouter_runtime(
requested_provider=requested_provider,
explicit_api_key=explicit_api_key,
explicit_base_url=explicit_base_url,
)
runtime["requested_provider"] = requested_provider
return runtime
provider = resolve_provider(
requested_provider,
explicit_api_key=explicit_api_key,
explicit_base_url=explicit_base_url,
)
model_cfg = _get_model_config()
explicit_runtime = _resolve_explicit_runtime(
provider=provider,
requested_provider=requested_provider,
model_cfg=model_cfg,
explicit_api_key=explicit_api_key,
explicit_base_url=explicit_base_url,
target_model=target_model,
)
if explicit_runtime:
return explicit_runtime
should_use_pool = provider != "openrouter"
if provider == "openrouter":
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
cfg_base_url = str(model_cfg.get("base_url") or "").strip()
env_openai_base_url = _getenv("OPENAI_BASE_URL", "").strip()
env_openrouter_base_url = _getenv("OPENROUTER_BASE_URL", "").strip()
has_custom_endpoint = bool(
explicit_base_url
or env_openai_base_url
or env_openrouter_base_url
)
if cfg_base_url and cfg_provider in {"auto", "custom"}:
has_custom_endpoint = True
has_runtime_override = bool(explicit_api_key or explicit_base_url)
should_use_pool = (
requested_provider in {"openrouter", "auto"}
and not has_custom_endpoint
and not has_runtime_override
)
try:
pool = load_pool(provider) if should_use_pool else None
except Exception:
pool = None
if pool and pool.has_credentials():
entry = pool.select()
pool_api_key = ""
if entry is not None:
pool_api_key = (
getattr(entry, "runtime_api_key", None)
or getattr(entry, "access_token", "")
)
# For Nous, the pool entry's runtime_api_key is the agent_key
# compatibility field. It must be an invoke JWT. The pool doesn't
# refresh it during selection (that would trigger network calls in
# non-runtime contexts like `hermes auth list`). If the key is
# expired/missing, refresh the selected pool entry before falling back
# to singleton auth resolution.
if provider == "nous" and entry is not None:
min_ttl = max(60, env_int("HERMES_NOUS_MIN_KEY_TTL_SECONDS", 1800))
nous_state = {
"agent_key": getattr(entry, "agent_key", None),
"agent_key_expires_at": getattr(entry, "agent_key_expires_at", None),
"scope": getattr(entry, "scope", None),
}
if not _agent_key_is_usable(nous_state, min_ttl):
logger.debug("Nous pool entry agent_key expired/missing, refreshing selected pool entry")
try:
refreshed = pool.try_refresh_current()
except Exception as exc:
logger.debug("Nous pool entry refresh failed: %s", exc)
refreshed = None
if refreshed is not None:
entry = refreshed
pool_api_key = (
getattr(entry, "runtime_api_key", None)
or getattr(entry, "access_token", "")
)
nous_state = {
"agent_key": getattr(entry, "agent_key", None),
"agent_key_expires_at": getattr(entry, "agent_key_expires_at", None),
"scope": getattr(entry, "scope", None),
}
if not pool_api_key or not _agent_key_is_usable(nous_state, min_ttl):
logger.debug("Nous pool entry agent_key still unavailable, falling through to runtime resolution")
pool_api_key = ""
if (
entry is not None
and pool_api_key
and credential_pool_matches_provider(
pool,
provider,
base_url=(
getattr(entry, "runtime_base_url", None)
or getattr(entry, "base_url", None)
or ""
),
)
):
return _resolve_runtime_from_pool_entry(
provider=provider,
entry=entry,
requested_provider=requested_provider,
model_cfg=model_cfg,
pool=pool,
target_model=target_model,
)
if provider == "nous":
try:
creds = resolve_nous_runtime_credentials(
timeout_seconds=float(_getenv("HERMES_NOUS_TIMEOUT_SECONDS", "15")),
)
return {
"provider": "nous",
"api_mode": "chat_completions",
"base_url": creds.get("base_url", "").rstrip("/"),
"api_key": creds.get("api_key", ""),
"source": creds.get("source", "portal"),
"expires_at": creds.get("expires_at"),
"requested_provider": requested_provider,
}
except AuthError:
if requested_provider != "auto":
raise
# Auto-detected Nous but credentials are stale/revoked —
# fall through to env-var providers (e.g. OpenRouter).
logger.info("Auto-detected Nous provider but credentials failed; "
"falling through to next provider.")
if provider == "openai-codex":
try:
creds = resolve_codex_runtime_credentials()
return {
"provider": "openai-codex",
"api_mode": "codex_responses",
"base_url": creds.get("base_url", "").rstrip("/"),
"api_key": creds.get("api_key", ""),
"source": creds.get("source", "hermes-auth-store"),
"last_refresh": creds.get("last_refresh"),
"requested_provider": requested_provider,
}
except AuthError:
if requested_provider != "auto":
raise
# Auto-detected Codex but credentials are stale/revoked —
# fall through to env-var providers (e.g. OpenRouter).
logger.info("Auto-detected Codex provider but credentials failed; "
"falling through to next provider.")
if provider == "xai-oauth":
try:
creds = resolve_xai_oauth_runtime_credentials()
return {
"provider": "xai-oauth",
"api_mode": "codex_responses",
"base_url": (creds.get("base_url") or "").rstrip("/") or DEFAULT_XAI_OAUTH_BASE_URL,
"api_key": creds.get("api_key", ""),
"source": creds.get("source", "hermes-auth-store"),
"last_refresh": creds.get("last_refresh"),
"requested_provider": requested_provider,
}
except AuthError:
if requested_provider != "auto":
raise
logger.info("Auto-detected xAI OAuth provider but credentials failed; "
"falling through to next provider.")
if provider == "qwen-oauth":
try:
creds = resolve_qwen_runtime_credentials()
return {
"provider": "qwen-oauth",
"api_mode": "chat_completions",
"base_url": creds.get("base_url", "").rstrip("/"),
"api_key": creds.get("api_key", ""),
"source": creds.get("source", "qwen-cli"),
"expires_at_ms": creds.get("expires_at_ms"),
"requested_provider": requested_provider,
}
except AuthError:
if requested_provider != "auto":
raise
logger.info("Qwen OAuth credentials failed; "
"falling through to next provider.")
if provider == "minimax-oauth":
pconfig = PROVIDER_REGISTRY.get(provider)
if pconfig and pconfig.auth_type == "oauth_minimax":
from hermes_cli.auth import resolve_minimax_oauth_runtime_credentials
creds = resolve_minimax_oauth_runtime_credentials()
return {
"provider": provider,
"api_mode": "anthropic_messages",
"base_url": creds["base_url"],
"api_key": creds["api_key"],
"source": creds.get("source", "oauth"),
"requested_provider": requested_provider,
}
if provider == "copilot-acp":
creds = resolve_external_process_provider_credentials(provider)
return {
"provider": "copilot-acp",
"api_mode": "chat_completions",
"base_url": creds.get("base_url", "").rstrip("/"),
"api_key": creds.get("api_key", ""),
"command": creds.get("command", ""),
"args": list(creds.get("args") or []),
"source": creds.get("source", "process"),
"requested_provider": requested_provider,
}
# Anthropic (native Messages API)
if provider == "anthropic":
# Allow base URL override from config.yaml model.base_url, but only
# when the configured provider is anthropic — otherwise a non-Anthropic
# base_url (e.g. Codex endpoint) would leak into Anthropic requests.
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
cfg_base_url = ""
if cfg_provider == "anthropic":
cfg_base_url = (model_cfg.get("base_url") or "").strip().rstrip("/")
if not _anthropic_base_url_override_ok(cfg_base_url):
cfg_base_url = ""
base_url = cfg_base_url or "https://api.anthropic.com"
# For Microsoft Foundry endpoints, use ANTHROPIC_API_KEY directly —
# Claude Code OAuth tokens (sk-ant-oat01) are not accepted by Azure.
# Azure keys don't start with "sk-ant-" so resolve_anthropic_token()
# would find the Claude Code OAuth token first (priority 3) and return
# that instead, causing 401s. Detect Azure endpoints and use the env
# key directly to bypass the OAuth priority chain.
_is_azure_endpoint = "azure.com" in base_url.lower() or (
cfg_base_url and "azure.com" in cfg_base_url.lower()
)
if _is_azure_endpoint:
# Honor user-specified env var hints on the model config before
# falling back to the built-in AZURE_ANTHROPIC_KEY / ANTHROPIC_API_KEY
# chain. Accept both `key_env` (Hermes canonical — matches the
# custom_providers field name) and `api_key_env` (documented in the
# Azure Foundry guide and read by most Hermes-compatible importers).
# Matches the config.yaml examples in website/docs/guides/azure-foundry.md.
token = ""
for hint_key in ("key_env", "api_key_env"):
env_var = str(model_cfg.get(hint_key) or "").strip()
if env_var:
token = _getenv(env_var, "").strip()
if token:
break
# Next: an inline api_key on the model config (useful in multi-profile
# setups that want to avoid env-var juggling).
if not token:
token = str(model_cfg.get("api_key") or "").strip()
# Finally fall back to the historical fixed names.
if not token:
token = (
_getenv("AZURE_ANTHROPIC_KEY", "").strip()
or _getenv("ANTHROPIC_API_KEY", "").strip()
)
if not token:
raise AuthError(
"No Azure Anthropic API key found. Set AZURE_ANTHROPIC_KEY or "
"ANTHROPIC_API_KEY, or point key_env/api_key_env in your "
"config.yaml model section at a custom env var."
)
else:
from agent.anthropic_adapter import resolve_anthropic_token
token = resolve_anthropic_token()
if not token:
raise AuthError(
"No Anthropic credentials found. Set ANTHROPIC_TOKEN or ANTHROPIC_API_KEY, "
"run 'claude setup-token', or authenticate with 'claude /login'."
)
return {
"provider": "anthropic",
"api_mode": "anthropic_messages",
"base_url": base_url,
"api_key": token,
"source": "env",
"requested_provider": requested_provider,
}
# AWS Bedrock (native Converse API via boto3)
if provider == "bedrock":
from agent.bedrock_adapter import (
has_aws_credentials,
resolve_aws_auth_env_var,
resolve_bedrock_region,
is_anthropic_bedrock_model,
)
# When the user explicitly selected bedrock (not auto-detected),
# trust boto3's credential chain — it handles IMDS, ECS task roles,
# Lambda execution roles, SSO, and other implicit sources that our
# env-var check can't detect.
is_explicit = requested_provider in {"bedrock", "aws", "aws-bedrock", "amazon-bedrock", "amazon"}
if not is_explicit and not has_aws_credentials():
raise AuthError(
"No AWS credentials found for Bedrock. Configure one of:\n"
" - AWS_ACCESS_KEY_ID + AWS_SECRET_ACCESS_KEY\n"
" - AWS_PROFILE (for SSO / named profiles)\n"
" - IAM instance role (EC2, ECS, Lambda)\n"
"Or run 'aws configure' to set up credentials.",
code="no_aws_credentials",
)
# Read bedrock-specific config from config.yaml
_bedrock_cfg = load_config().get("bedrock", {})
# Region priority: config.yaml bedrock.region → env var → us-east-1
region = (_bedrock_cfg.get("region") or "").strip() or resolve_bedrock_region()
auth_source = resolve_aws_auth_env_var() or "aws-sdk-default-chain"
# Build guardrail config if configured
_gr = _bedrock_cfg.get("guardrail", {})
guardrail_config = None
if _gr.get("guardrail_identifier") and _gr.get("guardrail_version"):
guardrail_config = {
"guardrailIdentifier": _gr["guardrail_identifier"],
"guardrailVersion": _gr["guardrail_version"],
}
if _gr.get("stream_processing_mode"):
guardrail_config["streamProcessingMode"] = _gr["stream_processing_mode"]
if _gr.get("trace"):
guardrail_config["trace"] = _gr["trace"]
# Dual-path routing: Claude models use AnthropicBedrock SDK for full
# feature parity (prompt caching, thinking budgets, adaptive thinking).
# Non-Claude models use the Converse API for multi-model support.
#
# Exception: Bearer Token auth (AWS_BEARER_TOKEN_BEDROCK) is NOT
# supported by the AnthropicBedrock SDK (it only does SigV4 signing —
# a bearer-only setup fails at runtime with "could not resolve
# credentials from session"). Route these users through the Converse
# API regardless of model. Ref: #28156.
_current_model = str(target_model or model_cfg.get("default") or "").strip()
_has_bearer_token = bool(os.environ.get("AWS_BEARER_TOKEN_BEDROCK", "").strip())
if is_anthropic_bedrock_model(_current_model) and not _has_bearer_token:
# Claude on Bedrock → AnthropicBedrock SDK → anthropic_messages path
runtime = {
"provider": "bedrock",
"api_mode": "anthropic_messages",
"base_url": f"https://bedrock-runtime.{region}.amazonaws.com",
"api_key": "aws-sdk",
"source": auth_source,
"region": region,
"bedrock_anthropic": True, # Signal to use AnthropicBedrock client
"requested_provider": requested_provider,
}
else:
# Non-Claude (Nova, DeepSeek, Llama, etc.) → Converse API
runtime = {
"provider": "bedrock",
"api_mode": "bedrock_converse",
"base_url": f"https://bedrock-runtime.{region}.amazonaws.com",
"api_key": "aws-sdk",
"source": auth_source,
"region": region,
"requested_provider": requested_provider,
}
if guardrail_config:
runtime["guardrail_config"] = guardrail_config
return runtime
# API-key providers (z.ai/GLM, Kimi, MiniMax, MiniMax-CN)
pconfig = PROVIDER_REGISTRY.get(provider)
if pconfig and pconfig.auth_type == "api_key":
creds = resolve_api_key_provider_credentials(provider)
# An explicitly selected API-key provider is authoritative. Returning
# a runtime with an empty key defers failure until the first request and
# can make a later fallback look like a silent provider switch. Fail at
# resolution so callers surface the missing credential (or consult only
# an explicitly configured fallback chain). LM Studio's no-auth path
# supplies a non-empty placeholder in the credential resolver above.
if not has_usable_secret(creds.get("api_key")):
env_names = ", ".join(pconfig.api_key_env_vars)
hint = f" Set {env_names}." if env_names else ""
raise AuthError(
f"No usable credentials found for provider '{provider}'.{hint}",
provider=provider,
code="missing_api_key",
)
# Honour model.base_url from config.yaml when the configured provider
# matches this provider — mirrors the Anthropic path above. Without
# this, users who set model.base_url to e.g. api.minimaxi.com/anthropic
# (China endpoint) still get the hardcoded api.minimax.io default (#6039).
cfg_provider = str(model_cfg.get("provider") or "").strip().lower()
cfg_base_url = ""
if cfg_provider == provider:
cfg_base_url = (model_cfg.get("base_url") or "").strip().rstrip("/")
base_url = cfg_base_url or creds.get("base_url", "").rstrip("/")
api_mode = "chat_completions"
if provider == "copilot":
api_mode = _copilot_runtime_api_mode(
model_cfg,
creds.get("api_key", ""),
target_model=target_model,
)
elif provider == "xai":
api_mode = "codex_responses"
else:
configured_provider = str(model_cfg.get("provider") or "").strip().lower()
# Only honor persisted api_mode when it belongs to the same provider family.
configured_mode = _parse_api_mode(model_cfg.get("api_mode"))
if provider in {"opencode-zen", "opencode-go"}:
# opencode-zen/go must always re-derive api_mode from the
# target model (not the stale persisted api_mode), because
# the same provider serves both anthropic_messages
# (e.g. minimax-m2.7) and chat_completions (e.g.
# deepseek-v4-flash) and switching models via /model would
# otherwise carry the previous mode forward, stripping /v1
# from base_url for chat_completions models and 404'ing.
# Refs #16878.
from hermes_cli.models import opencode_model_api_mode
_effective = target_model or model_cfg.get("default", "")
api_mode = opencode_model_api_mode(provider, _effective)
elif configured_mode and _provider_supports_explicit_api_mode(provider, configured_provider):
api_mode = configured_mode
else:
# Auto-detect Anthropic-compatible endpoints by URL convention
# (e.g. https://api.minimax.io/anthropic, https://dashscope.../anthropic)
# plus api.openai.com → codex_responses and api.x.ai → codex_responses.
detected = _detect_api_mode_for_url(base_url)
if detected:
api_mode = detected
# Normalize the /v1 suffix for OpenCode by API mode (see comment above).
if provider in {"opencode-zen", "opencode-go"}:
from hermes_cli.models import normalize_opencode_base_url
base_url = normalize_opencode_base_url(provider, api_mode, base_url)
if provider == "lmstudio":
base_url = auth_mod._normalize_lmstudio_runtime_base_url(base_url)
return {
"provider": provider,
"api_mode": api_mode,
"base_url": base_url,
"api_key": creds.get("api_key", ""),
"source": creds.get("source", "env"),
"requested_provider": requested_provider,
}
runtime = _resolve_openrouter_runtime(
requested_provider=requested_provider,
explicit_api_key=explicit_api_key,
explicit_base_url=explicit_base_url,
)
runtime["requested_provider"] = requested_provider
return runtime
def format_runtime_provider_error(error: Exception) -> str:
if isinstance(error, AuthError):
return format_auth_error(error)
return str(error)