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feat: final platform plugin parity — webhook delivery, platform hints, docs

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Closes remaining functional gaps and adds documentation.

## Functional fixes

webhook.py: Cross-platform delivery now checks the plugin registry
  for unknown platform names instead of hardcoding 15 names in a tuple.
  Plugin platforms can receive webhook-routed deliveries.

prompt_builder: Platform hints (system prompt LLM guidance) now fall
  back to the plugin registry's platform_hint field. Plugin platforms
  can tell the LLM 'you're on IRC, no markdown.'

PlatformEntry: Added platform_hint field for LLM guidance injection.

IRC adapter: Added acquire_scoped_lock/release_scoped_lock in
  connect/disconnect to prevent two profiles from using the same IRC
  identity. Added platform_hint for IRC-specific LLM guidance.

Removed dead token-empty-warning extension for plugin platforms
  (plugin adapters handle their own env vars via check_fn).

## Documentation

website/docs/developer-guide/adding-platform-adapters.md:
  - Added 'Plugin Path (Recommended)' section with full code examples,
    PLUGIN.yaml template, config.yaml examples, and a table showing all
    18 integration points the plugin system handles automatically
  - Renamed built-in checklist to clarify it's for core contributors

gateway/platforms/ADDING_A_PLATFORM.md:
  - Added Plugin Path section pointing to the reference implementation
    and full docs guide
  - Clarified built-in path is for core contributors only
This commit is contained in:
Teknium 2026-04-11 19:27:04 -07:00
parent e7fc6450fc
commit 2a304e5de4
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8 changed files with 235 additions and 38 deletions
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9
gateway/config.py
View file

@ -733,15 +733,6 @@ def load_gateway_config() -> GatewayConfig:
if not pconfig.enabled:
continue
env_name = _token_env_names.get(platform)
if not env_name:
# Check plugin registry for required_env
try:
from gateway.platform_registry import platform_registry
entry = platform_registry.get(platform.value)
if entry and entry.required_env:
env_name = entry.required_env[0] # primary env var
except Exception:
pass
if env_name and pconfig.token is not None and not pconfig.token.strip():
logger.warning(
"%s is enabled but %s is empty. "

5
gateway/platform_registry.py
View file

@ -89,6 +89,11 @@ class PlatformEntry:
# (allows /update command from this platform).
allow_update_command: bool = True
# ── LLM guidance ──
# Platform hint injected into the system prompt (e.g. "You are on IRC.
# Do not use markdown."). Empty string = no hint.
platform_hint: str = ""
class PlatformRegistry:
"""Central registry of platform adapters.

29
gateway/platforms/ADDING_A_PLATFORM.md
View file

@ -1,9 +1,30 @@
# Adding a New Messaging Platform
Checklist for integrating a new messaging platform into the Hermes gateway.
Use this as a reference when building a new adapter — every item here is a
real integration point that exists in the codebase. Missing any of them will
cause broken functionality, missing features, or inconsistent behavior.
There are two ways to add a platform to the Hermes gateway:
## Plugin Path (Recommended for Community/Third-Party)
Create a plugin directory in `~/.hermes/plugins/` with a `PLUGIN.yaml` and
`adapter.py`. The adapter inherits from `BasePlatformAdapter` and registers
via `ctx.register_platform()` in the `register(ctx)` entry point. This
requires **zero changes to core Hermes code**.
The plugin system automatically handles: adapter creation, config parsing,
user authorization, cron delivery, send_message routing, system prompt hints,
status display, gateway setup, and more.
See `plugins/platforms/irc/` for a complete reference implementation, and
`website/docs/developer-guide/adding-platform-adapters.md` for the full
plugin guide with code examples.
---
## Built-in Path (Core Contributors Only)
Checklist for integrating a platform directly into the Hermes core.
Use this as a reference when building a built-in adapter — every item here
is a real integration point. Missing any of them will cause broken
functionality, missing features, or inconsistent behavior.
---

34
gateway/platforms/webhook.py
View file

@ -186,25 +186,21 @@ class WebhookAdapter(BasePlatformAdapter):
if deliver_type == "github_comment":
return await self._deliver_github_comment(content, delivery)
# Cross-platform delivery — any platform with a gateway adapter
if self.gateway_runner and deliver_type in (
"telegram",
"discord",
"slack",
"signal",
"sms",
"whatsapp",
"matrix",
"mattermost",
"homeassistant",
"email",
"dingtalk",
"feishu",
"wecom",
"wecom_callback",
"weixin",
"bluebubbles",
):
# Cross-platform delivery — any platform with a gateway adapter.
# Check both built-in names and plugin-registered platforms.
_BUILTIN_DELIVER_PLATFORMS = {
"telegram", "discord", "slack", "signal", "sms", "whatsapp",
"matrix", "mattermost", "homeassistant", "email", "dingtalk",
"feishu", "wecom", "wecom_callback", "weixin", "bluebubbles",
}
_is_known_platform = deliver_type in _BUILTIN_DELIVER_PLATFORMS
if not _is_known_platform:
try:
from gateway.platform_registry import platform_registry
_is_known_platform = platform_registry.is_registered(deliver_type)
except Exception:
pass
if self.gateway_runner and _is_known_platform:
return await self._deliver_cross_platform(
deliver_type, content, delivery
)

27
plugins/platforms/irc/adapter.py
View file

@ -151,6 +151,18 @@ class IRCAdapter(BasePlatformAdapter):
)
return False
# Prevent two profiles from using the same IRC identity
try:
from gateway.status import acquire_scoped_lock, release_scoped_lock
lock_key = f"{self.server}:{self.nickname}"
if not acquire_scoped_lock("irc", lock_key):
logger.error("IRC: %s@%s already in use by another profile", self.nickname, self.server)
self._set_fatal_error("lock_conflict", "IRC identity in use by another profile", retryable=False)
return False
self._lock_key = lock_key
except ImportError:
self._lock_key = None # status module not available (e.g. tests)
try:
ssl_ctx = None
if self.use_tls:
@ -197,6 +209,13 @@ class IRCAdapter(BasePlatformAdapter):
async def disconnect(self) -> None:
"""Quit and close the connection."""
# Release the scoped lock so another profile can use this identity
if getattr(self, "_lock_key", None):
try:
from gateway.status import release_scoped_lock
release_scoped_lock("irc", self._lock_key)
except Exception:
pass
self._mark_disconnected()
if self._writer and not self._writer.is_closing():
try:
@ -500,4 +519,12 @@ def register(ctx):
# IRC doesn't have phone numbers to redact
pii_safe=False,
allow_update_command=True,
# LLM guidance
platform_hint=(
"You are chatting via IRC. IRC does not support markdown formatting "
"— use plain text only. Messages are limited to ~450 characters per "
"line (long messages are automatically split). In channels, users "
"address you by prefixing your nick. Keep responses concise and "
"conversational."
),
)

9
run_agent.py
View file

@ -3181,6 +3181,15 @@ class AIAgent:
platform_key = (self.platform or "").lower().strip()
if platform_key in PLATFORM_HINTS:
prompt_parts.append(PLATFORM_HINTS[platform_key])
elif platform_key:
# Check plugin registry for platform-specific LLM guidance
try:
from gateway.platform_registry import platform_registry
_entry = platform_registry.get(platform_key)
if _entry and _entry.platform_hint:
prompt_parts.append(_entry.platform_hint)
except Exception:
pass
return "\n\n".join(p.strip() for p in prompt_parts if p.strip())

9
tests/gateway/test_email.py
View file

@ -335,10 +335,11 @@ class TestChannelDirectory(unittest.TestCase):
"""Verify email in channel directory session-based discovery."""
def test_email_in_session_discovery(self):
import gateway.channel_directory
import inspect
source = inspect.getsource(gateway.channel_directory.build_channel_directory)
self.assertIn('"email"', source)
"""Email is discovered via Platform enum iteration in build_channel_directory."""
from gateway.config import Platform
# Email is a built-in Platform member, so it's included in
# `for plat in Platform:` iteration inside build_channel_directory.
self.assertIn(Platform.EMAIL, Platform.__members__.values())
class TestGatewaySetup(unittest.TestCase):

151
website/docs/developer-guide/adding-platform-adapters.md
View file

@ -7,7 +7,9 @@ sidebar_position: 9
This guide covers adding a new messaging platform to the Hermes gateway. A platform adapter connects Hermes to an external messaging service (Telegram, Discord, WeCom, etc.) so users can interact with the agent through that service.
:::tip
Adding a platform adapter touches 20+ files across code, config, and docs. Use this guide as a checklist — the adapter file itself is typically only 40% of the work.
There are two ways to add a platform:
- **Plugin** (recommended for community/third-party): Drop a plugin directory into `~/.hermes/plugins/` — zero core code changes needed. See [Plugin Path](#plugin-path-recommended) below.
- **Built-in**: Modify 20+ files across code, config, and docs. Use the [Built-in Checklist](#step-by-step-checklist) below.
:::
## Architecture Overview
@ -26,7 +28,152 @@ Every adapter extends `BasePlatformAdapter` from `gateway/platforms/base.py` and
Inbound messages are received by the adapter and forwarded via `self.handle_message(event)`, which the base class routes to the gateway runner.
## Step-by-Step Checklist
## Plugin Path (Recommended)
The plugin system lets you add a platform adapter without modifying any core Hermes code. Your plugin is a directory with two files:
```
~/.hermes/plugins/my-platform/
PLUGIN.yaml # Plugin metadata
adapter.py # Adapter class + register() entry point
```
### PLUGIN.yaml
```yaml
name: my-platform
version: 1.0.0
description: My custom messaging platform adapter
requires_env:
- MY_PLATFORM_TOKEN
- MY_PLATFORM_CHANNEL
```
### adapter.py
```python
import os
from gateway.platforms.base import (
BasePlatformAdapter, SendResult, MessageEvent, MessageType,
)
from gateway.config import Platform, PlatformConfig
class MyPlatformAdapter(BasePlatformAdapter):
def __init__(self, config: PlatformConfig):
super().__init__(config, Platform("my_platform"))
extra = config.extra or {}
self.token = os.getenv("MY_PLATFORM_TOKEN") or extra.get("token", "")
async def connect(self) -> bool:
# Connect to the platform API, start listeners
self._mark_connected()
return True
async def disconnect(self) -> None:
self._mark_disconnected()
async def send(self, chat_id, content, reply_to=None, metadata=None):
# Send message via platform API
return SendResult(success=True, message_id="...")
async def get_chat_info(self, chat_id):
return {"name": chat_id, "type": "dm"}
def check_requirements() -> bool:
return bool(os.getenv("MY_PLATFORM_TOKEN"))
def validate_config(config) -> bool:
extra = getattr(config, "extra", {}) or {}
return bool(os.getenv("MY_PLATFORM_TOKEN") or extra.get("token"))
def register(ctx):
"""Plugin entry point — called by the Hermes plugin system."""
ctx.register_platform(
name="my_platform",
label="My Platform",
adapter_factory=lambda cfg: MyPlatformAdapter(cfg),
check_fn=check_requirements,
validate_config=validate_config,
required_env=["MY_PLATFORM_TOKEN"],
install_hint="pip install my-platform-sdk",
# Per-platform user authorization env vars
allowed_users_env="MY_PLATFORM_ALLOWED_USERS",
allow_all_env="MY_PLATFORM_ALLOW_ALL_USERS",
# Message length limit for smart chunking (0 = no limit)
max_message_length=4000,
# LLM guidance injected into system prompt
platform_hint=(
"You are chatting via My Platform. "
"It supports markdown formatting."
),
# Display
emoji="💬",
)
# Optional: register platform-specific tools
ctx.register_tool(
name="my_platform_search",
toolset="my_platform",
schema={...},
handler=my_search_handler,
)
```
### Configuration
Users configure the platform in `config.yaml`:
```yaml
gateway:
platforms:
my_platform:
enabled: true
extra:
token: "..."
channel: "#general"
```
Or via environment variables (which the adapter reads in `__init__`).
### What the Plugin System Handles Automatically
When you call `ctx.register_platform()`, the following integration points are handled for you — no core code changes needed:
| Integration point | How it works |
|---|---|
| Gateway adapter creation | Registry checked before built-in if/elif chain |
| Config parsing | `Platform._missing_()` accepts any platform name |
| Connected platform validation | Registry `validate_config()` called |
| User authorization | `allowed_users_env` / `allow_all_env` checked |
| Cron delivery | `Platform()` resolves any registered name |
| send_message tool | Routes through live gateway adapter |
| Webhook cross-platform delivery | Registry checked for known platforms |
| `/update` command access | `allow_update_command` flag |
| Channel directory | Plugin platforms included in enumeration |
| System prompt hints | `platform_hint` injected into LLM context |
| Message chunking | `max_message_length` for smart splitting |
| PII redaction | `pii_safe` flag |
| `hermes status` | Shows plugin platforms with `(plugin)` tag |
| `hermes gateway setup` | Plugin platforms appear in setup menu |
| `hermes tools` / `hermes skills` | Plugin platforms in per-platform config |
| Token lock (multi-profile) | Use `acquire_scoped_lock()` in your `connect()` |
| Orphaned config warning | Descriptive log when plugin is missing |
### Reference Implementation
See `plugins/platforms/irc/` in the repo for a complete working example — a full async IRC adapter with zero external dependencies.
---
## Step-by-Step Checklist (Built-in Path)
:::note
This checklist is for adding a platform directly to the Hermes core codebase — typically done by core contributors for officially supported platforms. Community/third-party platforms should use the [Plugin Path](#plugin-path-recommended) above.
:::
### 1. Platform Enum