# chat-logger-plugin

**Version:** v1.0.1

Logs recent chat turns to `/tmp/openclaw-chat.log` so the mem0 auto-capture hook can attach the *previous assistant* reply when storing conversational memories.

## What it does
- Listens to `session_start`, `message_received`, and `agent_end` events
- Resolves the best available `sessionKey` and caches it
- Writes the **last two turns** (user + assistant) to `/tmp/openclaw-chat.log`

## Why it matters
The mem0 hook reads the log to retrieve the last assistant reply and include it in the capture payload. This avoids losing context when auto-capturing a new user message.

## Output format
Each log line is a JSON object:
```json
{
  "ts": "2026-03-16T02:30:46.827Z",
  "sessionKey": "agent:main:main",
  "messages": [
    { "role": "user", "content": "..." },
    { "role": "assistant", "content": "..." }
  ]
}
```

## Install / reload
1) Edit in `workspace/chat-logger-plugin/`
2) Restart gateway so the plugin is reloaded

## Related
- Hook: `workspace/hooks/mem0-auto-capture/hook/handler.ts`
- The hook falls back to the latest assistant message if sessionKey is missing.