hermes-agent/agent/codex_responses_adapter.py
kshitijk4poor ff56bebdf3 refactor: extract codex_responses logic into dedicated adapter
Extract 12 Codex Responses API format-conversion and normalization functions
from run_agent.py into agent/codex_responses_adapter.py, following the
existing pattern of anthropic_adapter.py and bedrock_adapter.py.

run_agent.py: 12,550 → 11,865 lines (-685 lines)

Functions moved:
- _chat_content_to_responses_parts (multimodal content conversion)
- _summarize_user_message_for_log (multimodal message logging)
- _deterministic_call_id (cache-safe fallback IDs)
- _split_responses_tool_id (composite ID splitting)
- _derive_responses_function_call_id (fc_ prefix conversion)
- _responses_tools (schema format conversion)
- _chat_messages_to_responses_input (message format conversion)
- _preflight_codex_input_items (input validation)
- _preflight_codex_api_kwargs (API kwargs validation)
- _extract_responses_message_text (response text extraction)
- _extract_responses_reasoning_text (reasoning extraction)
- _normalize_codex_response (full response normalization)

All functions are stateless module-level functions. AIAgent methods remain
as thin one-line wrappers. Both module-level helpers are re-exported from
run_agent.py for backward compatibility with existing test imports.

Includes multimodal inline image support (PR #12969) that the original PR
was missing.

Based on PR #12975 by @kshitijk4poor.
2026-04-20 11:53:17 -07:00

813 lines
34 KiB
Python

"""Codex Responses API adapter.
Pure format-conversion and normalization logic for the OpenAI Responses API
(used by OpenAI Codex, xAI, GitHub Models, and other Responses-compatible endpoints).
Extracted from run_agent.py to isolate Responses API-specific logic from the
core agent loop. All functions are stateless — they operate on the data passed
in and return transformed results.
"""
from __future__ import annotations
import hashlib
import json
import logging
import re
import uuid
from types import SimpleNamespace
from typing import Any, Dict, List, Optional
from agent.prompt_builder import DEFAULT_AGENT_IDENTITY
logger = logging.getLogger(__name__)
# ---------------------------------------------------------------------------
# Multimodal content helpers
# ---------------------------------------------------------------------------
def _chat_content_to_responses_parts(content: Any) -> List[Dict[str, Any]]:
"""Convert chat-style multimodal content to Responses API input parts.
Input: ``[{"type":"text"|"image_url", ...}]`` (native OpenAI Chat format)
Output: ``[{"type":"input_text"|"input_image", ...}]`` (Responses format)
Returns an empty list when ``content`` is not a list or contains no
recognized parts — callers fall back to the string path.
"""
if not isinstance(content, list):
return []
converted: List[Dict[str, Any]] = []
for part in content:
if isinstance(part, str):
if part:
converted.append({"type": "input_text", "text": part})
continue
if not isinstance(part, dict):
continue
ptype = str(part.get("type") or "").strip().lower()
if ptype in {"text", "input_text", "output_text"}:
text = part.get("text")
if isinstance(text, str) and text:
converted.append({"type": "input_text", "text": text})
continue
if ptype in {"image_url", "input_image"}:
image_ref = part.get("image_url")
detail = part.get("detail")
if isinstance(image_ref, dict):
url = image_ref.get("url")
detail = image_ref.get("detail", detail)
else:
url = image_ref
if not isinstance(url, str) or not url:
continue
image_part: Dict[str, Any] = {"type": "input_image", "image_url": url}
if isinstance(detail, str) and detail.strip():
image_part["detail"] = detail.strip()
converted.append(image_part)
return converted
def _summarize_user_message_for_log(content: Any) -> str:
"""Return a short text summary of a user message for logging/trajectory.
Multimodal messages arrive as a list of ``{type:"text"|"image_url", ...}``
parts from the API server. Logging, spinner previews, and trajectory
files all want a plain string — this helper extracts the first chunk of
text and notes any attached images. Returns an empty string for empty
lists and ``str(content)`` for unexpected scalar types.
"""
if content is None:
return ""
if isinstance(content, str):
return content
if isinstance(content, list):
text_bits: List[str] = []
image_count = 0
for part in content:
if isinstance(part, str):
if part:
text_bits.append(part)
continue
if not isinstance(part, dict):
continue
ptype = str(part.get("type") or "").strip().lower()
if ptype in {"text", "input_text", "output_text"}:
text = part.get("text")
if isinstance(text, str) and text:
text_bits.append(text)
elif ptype in {"image_url", "input_image"}:
image_count += 1
summary = " ".join(text_bits).strip()
if image_count:
note = f"[{image_count} image{'s' if image_count != 1 else ''}]"
summary = f"{note} {summary}" if summary else note
return summary
try:
return str(content)
except Exception:
return ""
# ---------------------------------------------------------------------------
# ID helpers
# ---------------------------------------------------------------------------
def _deterministic_call_id(fn_name: str, arguments: str, index: int = 0) -> str:
"""Generate a deterministic call_id from tool call content.
Used as a fallback when the API doesn't provide a call_id.
Deterministic IDs prevent cache invalidation — random UUIDs would
make every API call's prefix unique, breaking OpenAI's prompt cache.
"""
seed = f"{fn_name}:{arguments}:{index}"
digest = hashlib.sha256(seed.encode("utf-8", errors="replace")).hexdigest()[:12]
return f"call_{digest}"
def _split_responses_tool_id(raw_id: Any) -> tuple[Optional[str], Optional[str]]:
"""Split a stored tool id into (call_id, response_item_id)."""
if not isinstance(raw_id, str):
return None, None
value = raw_id.strip()
if not value:
return None, None
if "|" in value:
call_id, response_item_id = value.split("|", 1)
call_id = call_id.strip() or None
response_item_id = response_item_id.strip() or None
return call_id, response_item_id
if value.startswith("fc_"):
return None, value
return value, None
def _derive_responses_function_call_id(
call_id: str,
response_item_id: Optional[str] = None,
) -> str:
"""Build a valid Responses `function_call.id` (must start with `fc_`)."""
if isinstance(response_item_id, str):
candidate = response_item_id.strip()
if candidate.startswith("fc_"):
return candidate
source = (call_id or "").strip()
if source.startswith("fc_"):
return source
if source.startswith("call_") and len(source) > len("call_"):
return f"fc_{source[len('call_'):]}"
sanitized = re.sub(r"[^A-Za-z0-9_-]", "", source)
if sanitized.startswith("fc_"):
return sanitized
if sanitized.startswith("call_") and len(sanitized) > len("call_"):
return f"fc_{sanitized[len('call_'):]}"
if sanitized:
return f"fc_{sanitized[:48]}"
seed = source or str(response_item_id or "") or uuid.uuid4().hex
digest = hashlib.sha1(seed.encode("utf-8")).hexdigest()[:24]
return f"fc_{digest}"
# ---------------------------------------------------------------------------
# Schema conversion
# ---------------------------------------------------------------------------
def _responses_tools(tools: Optional[List[Dict[str, Any]]] = None) -> Optional[List[Dict[str, Any]]]:
"""Convert chat-completions tool schemas to Responses function-tool schemas."""
if not tools:
return None
converted: List[Dict[str, Any]] = []
for item in tools:
fn = item.get("function", {}) if isinstance(item, dict) else {}
name = fn.get("name")
if not isinstance(name, str) or not name.strip():
continue
converted.append({
"type": "function",
"name": name,
"description": fn.get("description", ""),
"strict": False,
"parameters": fn.get("parameters", {"type": "object", "properties": {}}),
})
return converted or None
# ---------------------------------------------------------------------------
# Message format conversion
# ---------------------------------------------------------------------------
def _chat_messages_to_responses_input(messages: List[Dict[str, Any]]) -> List[Dict[str, Any]]:
"""Convert internal chat-style messages to Responses input items."""
items: List[Dict[str, Any]] = []
seen_item_ids: set = set()
for msg in messages:
if not isinstance(msg, dict):
continue
role = msg.get("role")
if role == "system":
continue
if role in {"user", "assistant"}:
content = msg.get("content", "")
if isinstance(content, list):
content_parts = _chat_content_to_responses_parts(content)
content_text = "".join(
p.get("text", "") for p in content_parts if p.get("type") == "input_text"
)
else:
content_parts = []
content_text = str(content) if content is not None else ""
if role == "assistant":
# Replay encrypted reasoning items from previous turns
# so the API can maintain coherent reasoning chains.
codex_reasoning = msg.get("codex_reasoning_items")
has_codex_reasoning = False
if isinstance(codex_reasoning, list):
for ri in codex_reasoning:
if isinstance(ri, dict) and ri.get("encrypted_content"):
item_id = ri.get("id")
if item_id and item_id in seen_item_ids:
continue
# Strip the "id" field — with store=False the
# Responses API cannot look up items by ID and
# returns 404. The encrypted_content blob is
# self-contained for reasoning chain continuity.
replay_item = {k: v for k, v in ri.items() if k != "id"}
items.append(replay_item)
if item_id:
seen_item_ids.add(item_id)
has_codex_reasoning = True
if content_parts:
items.append({"role": "assistant", "content": content_parts})
elif content_text.strip():
items.append({"role": "assistant", "content": content_text})
elif has_codex_reasoning:
# The Responses API requires a following item after each
# reasoning item (otherwise: missing_following_item error).
# When the assistant produced only reasoning with no visible
# content, emit an empty assistant message as the required
# following item.
items.append({"role": "assistant", "content": ""})
tool_calls = msg.get("tool_calls")
if isinstance(tool_calls, list):
for tc in tool_calls:
if not isinstance(tc, dict):
continue
fn = tc.get("function", {})
fn_name = fn.get("name")
if not isinstance(fn_name, str) or not fn_name.strip():
continue
embedded_call_id, embedded_response_item_id = _split_responses_tool_id(
tc.get("id")
)
call_id = tc.get("call_id")
if not isinstance(call_id, str) or not call_id.strip():
call_id = embedded_call_id
if not isinstance(call_id, str) or not call_id.strip():
if (
isinstance(embedded_response_item_id, str)
and embedded_response_item_id.startswith("fc_")
and len(embedded_response_item_id) > len("fc_")
):
call_id = f"call_{embedded_response_item_id[len('fc_'):]}"
else:
_raw_args = str(fn.get("arguments", "{}"))
call_id = _deterministic_call_id(fn_name, _raw_args, len(items))
call_id = call_id.strip()
arguments = fn.get("arguments", "{}")
if isinstance(arguments, dict):
arguments = json.dumps(arguments, ensure_ascii=False)
elif not isinstance(arguments, str):
arguments = str(arguments)
arguments = arguments.strip() or "{}"
items.append({
"type": "function_call",
"call_id": call_id,
"name": fn_name,
"arguments": arguments,
})
continue
# Non-assistant (user) role: emit multimodal parts when present,
# otherwise fall back to the text payload.
if content_parts:
items.append({"role": role, "content": content_parts})
else:
items.append({"role": role, "content": content_text})
continue
if role == "tool":
raw_tool_call_id = msg.get("tool_call_id")
call_id, _ = _split_responses_tool_id(raw_tool_call_id)
if not isinstance(call_id, str) or not call_id.strip():
if isinstance(raw_tool_call_id, str) and raw_tool_call_id.strip():
call_id = raw_tool_call_id.strip()
if not isinstance(call_id, str) or not call_id.strip():
continue
items.append({
"type": "function_call_output",
"call_id": call_id,
"output": str(msg.get("content", "") or ""),
})
return items
# ---------------------------------------------------------------------------
# Input preflight / validation
# ---------------------------------------------------------------------------
def _preflight_codex_input_items(raw_items: Any) -> List[Dict[str, Any]]:
if not isinstance(raw_items, list):
raise ValueError("Codex Responses input must be a list of input items.")
normalized: List[Dict[str, Any]] = []
seen_ids: set = set()
for idx, item in enumerate(raw_items):
if not isinstance(item, dict):
raise ValueError(f"Codex Responses input[{idx}] must be an object.")
item_type = item.get("type")
if item_type == "function_call":
call_id = item.get("call_id")
name = item.get("name")
if not isinstance(call_id, str) or not call_id.strip():
raise ValueError(f"Codex Responses input[{idx}] function_call is missing call_id.")
if not isinstance(name, str) or not name.strip():
raise ValueError(f"Codex Responses input[{idx}] function_call is missing name.")
arguments = item.get("arguments", "{}")
if isinstance(arguments, dict):
arguments = json.dumps(arguments, ensure_ascii=False)
elif not isinstance(arguments, str):
arguments = str(arguments)
arguments = arguments.strip() or "{}"
normalized.append(
{
"type": "function_call",
"call_id": call_id.strip(),
"name": name.strip(),
"arguments": arguments,
}
)
continue
if item_type == "function_call_output":
call_id = item.get("call_id")
if not isinstance(call_id, str) or not call_id.strip():
raise ValueError(f"Codex Responses input[{idx}] function_call_output is missing call_id.")
output = item.get("output", "")
if output is None:
output = ""
if not isinstance(output, str):
output = str(output)
normalized.append(
{
"type": "function_call_output",
"call_id": call_id.strip(),
"output": output,
}
)
continue
if item_type == "reasoning":
encrypted = item.get("encrypted_content")
if isinstance(encrypted, str) and encrypted:
item_id = item.get("id")
if isinstance(item_id, str) and item_id:
if item_id in seen_ids:
continue
seen_ids.add(item_id)
reasoning_item = {"type": "reasoning", "encrypted_content": encrypted}
# Do NOT include the "id" in the outgoing item — with
# store=False (our default) the API tries to resolve the
# id server-side and returns 404. The id is still used
# above for local deduplication via seen_ids.
summary = item.get("summary")
if isinstance(summary, list):
reasoning_item["summary"] = summary
else:
reasoning_item["summary"] = []
normalized.append(reasoning_item)
continue
role = item.get("role")
if role in {"user", "assistant"}:
content = item.get("content", "")
if content is None:
content = ""
if isinstance(content, list):
# Multimodal content from ``_chat_messages_to_responses_input``
# is already in Responses format (``input_text`` / ``input_image``).
# Validate each part and pass through.
validated: List[Dict[str, Any]] = []
for part_idx, part in enumerate(content):
if isinstance(part, str):
if part:
validated.append({"type": "input_text", "text": part})
continue
if not isinstance(part, dict):
raise ValueError(
f"Codex Responses input[{idx}].content[{part_idx}] must be an object or string."
)
ptype = str(part.get("type") or "").strip().lower()
if ptype in {"input_text", "text", "output_text"}:
text = part.get("text", "")
if not isinstance(text, str):
text = str(text or "")
validated.append({"type": "input_text", "text": text})
elif ptype in {"input_image", "image_url"}:
image_ref = part.get("image_url", "")
detail = part.get("detail")
if isinstance(image_ref, dict):
url = image_ref.get("url", "")
detail = image_ref.get("detail", detail)
else:
url = image_ref
if not isinstance(url, str):
url = str(url or "")
image_part: Dict[str, Any] = {"type": "input_image", "image_url": url}
if isinstance(detail, str) and detail.strip():
image_part["detail"] = detail.strip()
validated.append(image_part)
else:
raise ValueError(
f"Codex Responses input[{idx}].content[{part_idx}] has unsupported type {part.get('type')!r}."
)
normalized.append({"role": role, "content": validated})
continue
if not isinstance(content, str):
content = str(content)
normalized.append({"role": role, "content": content})
continue
raise ValueError(
f"Codex Responses input[{idx}] has unsupported item shape (type={item_type!r}, role={role!r})."
)
return normalized
def _preflight_codex_api_kwargs(
api_kwargs: Any,
*,
allow_stream: bool = False,
) -> Dict[str, Any]:
if not isinstance(api_kwargs, dict):
raise ValueError("Codex Responses request must be a dict.")
required = {"model", "instructions", "input"}
missing = [key for key in required if key not in api_kwargs]
if missing:
raise ValueError(f"Codex Responses request missing required field(s): {', '.join(sorted(missing))}.")
model = api_kwargs.get("model")
if not isinstance(model, str) or not model.strip():
raise ValueError("Codex Responses request 'model' must be a non-empty string.")
model = model.strip()
instructions = api_kwargs.get("instructions")
if instructions is None:
instructions = ""
if not isinstance(instructions, str):
instructions = str(instructions)
instructions = instructions.strip() or DEFAULT_AGENT_IDENTITY
normalized_input = _preflight_codex_input_items(api_kwargs.get("input"))
tools = api_kwargs.get("tools")
normalized_tools = None
if tools is not None:
if not isinstance(tools, list):
raise ValueError("Codex Responses request 'tools' must be a list when provided.")
normalized_tools = []
for idx, tool in enumerate(tools):
if not isinstance(tool, dict):
raise ValueError(f"Codex Responses tools[{idx}] must be an object.")
if tool.get("type") != "function":
raise ValueError(f"Codex Responses tools[{idx}] has unsupported type {tool.get('type')!r}.")
name = tool.get("name")
parameters = tool.get("parameters")
if not isinstance(name, str) or not name.strip():
raise ValueError(f"Codex Responses tools[{idx}] is missing a valid name.")
if not isinstance(parameters, dict):
raise ValueError(f"Codex Responses tools[{idx}] is missing valid parameters.")
description = tool.get("description", "")
if description is None:
description = ""
if not isinstance(description, str):
description = str(description)
strict = tool.get("strict", False)
if not isinstance(strict, bool):
strict = bool(strict)
normalized_tools.append(
{
"type": "function",
"name": name.strip(),
"description": description,
"strict": strict,
"parameters": parameters,
}
)
store = api_kwargs.get("store", False)
if store is not False:
raise ValueError("Codex Responses contract requires 'store' to be false.")
allowed_keys = {
"model", "instructions", "input", "tools", "store",
"reasoning", "include", "max_output_tokens", "temperature",
"tool_choice", "parallel_tool_calls", "prompt_cache_key", "service_tier",
"extra_headers",
}
normalized: Dict[str, Any] = {
"model": model,
"instructions": instructions,
"input": normalized_input,
"store": False,
}
if normalized_tools is not None:
normalized["tools"] = normalized_tools
# Pass through reasoning config
reasoning = api_kwargs.get("reasoning")
if isinstance(reasoning, dict):
normalized["reasoning"] = reasoning
include = api_kwargs.get("include")
if isinstance(include, list):
normalized["include"] = include
service_tier = api_kwargs.get("service_tier")
if isinstance(service_tier, str) and service_tier.strip():
normalized["service_tier"] = service_tier.strip()
# Pass through max_output_tokens and temperature
max_output_tokens = api_kwargs.get("max_output_tokens")
if isinstance(max_output_tokens, (int, float)) and max_output_tokens > 0:
normalized["max_output_tokens"] = int(max_output_tokens)
temperature = api_kwargs.get("temperature")
if isinstance(temperature, (int, float)):
normalized["temperature"] = float(temperature)
# Pass through tool_choice, parallel_tool_calls, prompt_cache_key
for passthrough_key in ("tool_choice", "parallel_tool_calls", "prompt_cache_key"):
val = api_kwargs.get(passthrough_key)
if val is not None:
normalized[passthrough_key] = val
extra_headers = api_kwargs.get("extra_headers")
if extra_headers is not None:
if not isinstance(extra_headers, dict):
raise ValueError("Codex Responses request 'extra_headers' must be an object.")
normalized_headers: Dict[str, str] = {}
for key, value in extra_headers.items():
if not isinstance(key, str) or not key.strip():
raise ValueError("Codex Responses request 'extra_headers' keys must be non-empty strings.")
if value is None:
continue
normalized_headers[key.strip()] = str(value)
if normalized_headers:
normalized["extra_headers"] = normalized_headers
if allow_stream:
stream = api_kwargs.get("stream")
if stream is not None and stream is not True:
raise ValueError("Codex Responses 'stream' must be true when set.")
if stream is True:
normalized["stream"] = True
allowed_keys.add("stream")
elif "stream" in api_kwargs:
raise ValueError("Codex Responses stream flag is only allowed in fallback streaming requests.")
unexpected = sorted(key for key in api_kwargs if key not in allowed_keys)
if unexpected:
raise ValueError(
f"Codex Responses request has unsupported field(s): {', '.join(unexpected)}."
)
return normalized
# ---------------------------------------------------------------------------
# Response extraction helpers
# ---------------------------------------------------------------------------
def _extract_responses_message_text(item: Any) -> str:
"""Extract assistant text from a Responses message output item."""
content = getattr(item, "content", None)
if not isinstance(content, list):
return ""
chunks: List[str] = []
for part in content:
ptype = getattr(part, "type", None)
if ptype not in {"output_text", "text"}:
continue
text = getattr(part, "text", None)
if isinstance(text, str) and text:
chunks.append(text)
return "".join(chunks).strip()
def _extract_responses_reasoning_text(item: Any) -> str:
"""Extract a compact reasoning text from a Responses reasoning item."""
summary = getattr(item, "summary", None)
if isinstance(summary, list):
chunks: List[str] = []
for part in summary:
text = getattr(part, "text", None)
if isinstance(text, str) and text:
chunks.append(text)
if chunks:
return "\n".join(chunks).strip()
text = getattr(item, "text", None)
if isinstance(text, str) and text:
return text.strip()
return ""
# ---------------------------------------------------------------------------
# Full response normalization
# ---------------------------------------------------------------------------
def _normalize_codex_response(response: Any) -> tuple[Any, str]:
"""Normalize a Responses API object to an assistant_message-like object."""
output = getattr(response, "output", None)
if not isinstance(output, list) or not output:
# The Codex backend can return empty output when the answer was
# delivered entirely via stream events. Check output_text as a
# last-resort fallback before raising.
out_text = getattr(response, "output_text", None)
if isinstance(out_text, str) and out_text.strip():
logger.debug(
"Codex response has empty output but output_text is present (%d chars); "
"synthesizing output item.", len(out_text.strip()),
)
output = [SimpleNamespace(
type="message", role="assistant", status="completed",
content=[SimpleNamespace(type="output_text", text=out_text.strip())],
)]
response.output = output
else:
raise RuntimeError("Responses API returned no output items")
response_status = getattr(response, "status", None)
if isinstance(response_status, str):
response_status = response_status.strip().lower()
else:
response_status = None
if response_status in {"failed", "cancelled"}:
error_obj = getattr(response, "error", None)
if isinstance(error_obj, dict):
error_msg = error_obj.get("message") or str(error_obj)
else:
error_msg = str(error_obj) if error_obj else f"Responses API returned status '{response_status}'"
raise RuntimeError(error_msg)
content_parts: List[str] = []
reasoning_parts: List[str] = []
reasoning_items_raw: List[Dict[str, Any]] = []
tool_calls: List[Any] = []
has_incomplete_items = response_status in {"queued", "in_progress", "incomplete"}
saw_commentary_phase = False
saw_final_answer_phase = False
for item in output:
item_type = getattr(item, "type", None)
item_status = getattr(item, "status", None)
if isinstance(item_status, str):
item_status = item_status.strip().lower()
else:
item_status = None
if item_status in {"queued", "in_progress", "incomplete"}:
has_incomplete_items = True
if item_type == "message":
item_phase = getattr(item, "phase", None)
if isinstance(item_phase, str):
normalized_phase = item_phase.strip().lower()
if normalized_phase in {"commentary", "analysis"}:
saw_commentary_phase = True
elif normalized_phase in {"final_answer", "final"}:
saw_final_answer_phase = True
message_text = _extract_responses_message_text(item)
if message_text:
content_parts.append(message_text)
elif item_type == "reasoning":
reasoning_text = _extract_responses_reasoning_text(item)
if reasoning_text:
reasoning_parts.append(reasoning_text)
# Capture the full reasoning item for multi-turn continuity.
# encrypted_content is an opaque blob the API needs back on
# subsequent turns to maintain coherent reasoning chains.
encrypted = getattr(item, "encrypted_content", None)
if isinstance(encrypted, str) and encrypted:
raw_item = {"type": "reasoning", "encrypted_content": encrypted}
item_id = getattr(item, "id", None)
if isinstance(item_id, str) and item_id:
raw_item["id"] = item_id
# Capture summary — required by the API when replaying reasoning items
summary = getattr(item, "summary", None)
if isinstance(summary, list):
raw_summary = []
for part in summary:
text = getattr(part, "text", None)
if isinstance(text, str):
raw_summary.append({"type": "summary_text", "text": text})
raw_item["summary"] = raw_summary
reasoning_items_raw.append(raw_item)
elif item_type == "function_call":
if item_status in {"queued", "in_progress", "incomplete"}:
continue
fn_name = getattr(item, "name", "") or ""
arguments = getattr(item, "arguments", "{}")
if not isinstance(arguments, str):
arguments = json.dumps(arguments, ensure_ascii=False)
raw_call_id = getattr(item, "call_id", None)
raw_item_id = getattr(item, "id", None)
embedded_call_id, _ = _split_responses_tool_id(raw_item_id)
call_id = raw_call_id if isinstance(raw_call_id, str) and raw_call_id.strip() else embedded_call_id
if not isinstance(call_id, str) or not call_id.strip():
call_id = _deterministic_call_id(fn_name, arguments, len(tool_calls))
call_id = call_id.strip()
response_item_id = raw_item_id if isinstance(raw_item_id, str) else None
response_item_id = _derive_responses_function_call_id(call_id, response_item_id)
tool_calls.append(SimpleNamespace(
id=call_id,
call_id=call_id,
response_item_id=response_item_id,
type="function",
function=SimpleNamespace(name=fn_name, arguments=arguments),
))
elif item_type == "custom_tool_call":
fn_name = getattr(item, "name", "") or ""
arguments = getattr(item, "input", "{}")
if not isinstance(arguments, str):
arguments = json.dumps(arguments, ensure_ascii=False)
raw_call_id = getattr(item, "call_id", None)
raw_item_id = getattr(item, "id", None)
embedded_call_id, _ = _split_responses_tool_id(raw_item_id)
call_id = raw_call_id if isinstance(raw_call_id, str) and raw_call_id.strip() else embedded_call_id
if not isinstance(call_id, str) or not call_id.strip():
call_id = _deterministic_call_id(fn_name, arguments, len(tool_calls))
call_id = call_id.strip()
response_item_id = raw_item_id if isinstance(raw_item_id, str) else None
response_item_id = _derive_responses_function_call_id(call_id, response_item_id)
tool_calls.append(SimpleNamespace(
id=call_id,
call_id=call_id,
response_item_id=response_item_id,
type="function",
function=SimpleNamespace(name=fn_name, arguments=arguments),
))
final_text = "\n".join([p for p in content_parts if p]).strip()
if not final_text and hasattr(response, "output_text"):
out_text = getattr(response, "output_text", "")
if isinstance(out_text, str):
final_text = out_text.strip()
assistant_message = SimpleNamespace(
content=final_text,
tool_calls=tool_calls,
reasoning="\n\n".join(reasoning_parts).strip() if reasoning_parts else None,
reasoning_content=None,
reasoning_details=None,
codex_reasoning_items=reasoning_items_raw or None,
)
if tool_calls:
finish_reason = "tool_calls"
elif has_incomplete_items or (saw_commentary_phase and not saw_final_answer_phase):
finish_reason = "incomplete"
elif reasoning_items_raw and not final_text:
# Response contains only reasoning (encrypted thinking state) with
# no visible content or tool calls. The model is still thinking and
# needs another turn to produce the actual answer. Marking this as
# "stop" would send it into the empty-content retry loop which burns
# 3 retries then fails — treat it as incomplete instead so the Codex
# continuation path handles it correctly.
finish_reason = "incomplete"
else:
finish_reason = "stop"
return assistant_message, finish_reason