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Overview

The OpenClaw plugin gives claude-mem persistent memory to agents running on the OpenClaw gateway. It handles three things:
  1. Observation recording — Captures tool usage from OpenClaw’s embedded runner and sends it to the claude-mem worker for AI processing
  2. System prompt context injection — Injects the observation timeline into each agent’s system prompt via the before_prompt_build hook, keeping MEMORY.md free for agent-curated memory
  3. Observation feed — Streams new observations to messaging channels (Telegram, Discord, Slack, etc.) in real-time via SSE
OpenClaw’s embedded runner (pi-embedded) calls the Anthropic API directly without spawning a claude process, so claude-mem’s standard hooks never fire. This plugin bridges that gap by using OpenClaw’s event system to capture the same data.

How It Works

Event Lifecycle

1

Prompt recorded and context injected (before_prompt_build)

Before the agent’s prompt is built, the plugin sends the user’s request to POST /api/sessions/init so the worker can create or continue the session. When OpenClaw supplies a request ID, a rebuilt or retried request keeps it, so the worker does not record the prompt twice. At the same time it fetches the observation timeline from the worker’s /api/context/inject endpoint and returns it as appendSystemContext. This injects cross-session context directly into the agent’s system prompt without writing any files.OpenClaw before 2026.8.1 still has before_agent_start, which carries the raw user prompt, so there the plugin records the prompt on before_agent_start instead. On those versions the prompt that before_prompt_build receives can include rebuilt history.The context is cached for 60 seconds to avoid re-fetching on every LLM turn within a session.
2

Tool use recorded (after_tool_call)

Every time the agent uses a tool (Read, Write, Bash, etc.), the plugin sends the observation to POST /api/sessions/observations with the tool name, input, and truncated response (max 1000 chars). For a failed call, the response starts with its error text. This is fire-and-forget — it doesn’t block the agent from continuing work.Tools prefixed with memory_ are skipped to avoid recursive recording.
3

Agent finishes (agent_end)

When the agent completes, the plugin extracts the last assistant message and sends it to POST /api/sessions/summarize, then calls POST /api/sessions/complete to close the session. Both are fire-and-forget.
4

Gateway restarts (gateway_start)

Clears all session tracking (session IDs, context cache) so agents get fresh state after a gateway restart.

System Prompt Context Injection

The plugin injects cross-session observation context into each agent’s system prompt via OpenClaw’s before_prompt_build hook. The content comes from the worker’s GET /api/context/inject?projects=<project> endpoint, which generates a formatted markdown timeline from the SQLite database. This approach keeps MEMORY.md under the agent’s control for curated long-term memory (decisions, preferences, durable facts), while the observation timeline is delivered through the system prompt where it belongs.
Context is cached for 60 seconds per project to avoid re-fetching on every LLM turn. The cache is cleared on gateway restart. Use syncMemoryFileExclude to opt specific agents out of context injection entirely.

Observation Feed (SSE → Messaging)

The plugin runs a background service that connects to the worker’s SSE stream (GET /stream) and forwards new_observation events to a configured messaging channel. This lets you monitor what your agents are learning in real-time from Telegram, Discord, Slack, or any supported OpenClaw channel. The SSE connection uses exponential backoff (1s → 30s) for automatic reconnection.

Setting Up the Observation Feed

The observation feed sends a formatted message to your OpenClaw channel every time claude-mem creates a new observation. Each message includes the observation title and subtitle so you can follow along as your agents work. Messages look like this in your channel:

Step 1: Choose your channel

The observation feed works with any channel that your OpenClaw gateway has configured. You need two pieces of information:
  • Channel type — The name of the channel plugin registered with OpenClaw (e.g., telegram, discord, slack, signal, whatsapp, line)
  • Target ID — The chat ID, channel ID, or user ID where messages should be sent
Channel type: telegramTarget ID: Your Telegram chat ID (numeric). To find it:
  1. Message @userinfobot on Telegram
  2. It will reply with your chat ID (e.g., 123456789)
  3. For group chats, the ID is negative (e.g., -1001234567890)
Channel type: discordTarget ID: The Discord channel ID. To find it:
  1. Enable Developer Mode in Discord (Settings → Advanced → Developer Mode)
  2. Right-click the channel → Copy Channel ID
Channel type: slackTarget ID: The Slack channel ID (not the channel name). To find it:
  1. Open the channel in Slack
  2. Click the channel name at the top
  3. Scroll to the bottom of the channel details — the ID looks like C01ABC2DEFG
Channel type: signalTarget ID: The Signal phone number or group ID configured in your OpenClaw gateway.
Channel type: whatsappTarget ID: The WhatsApp phone number or group JID configured in your OpenClaw gateway.
Channel type: lineTarget ID: The LINE user ID or group ID from the LINE Developer Console.

Step 2: Add the config to your gateway

Add the observationFeed block to your claude-mem plugin config in your OpenClaw gateway configuration:
The channel value must match a channel plugin that is already configured and running on your OpenClaw gateway. If the channel isn’t registered, you’ll see Unknown channel type: <channel> in the logs.

Step 3: Verify the connection

After starting the gateway, check that the feed is connected:
  1. Check the logs — You should see:
  2. Use the status command — Run /claude_mem_feed in any OpenClaw chat to see:
  3. Trigger a test — Have an agent do some work. When the worker processes the tool usage into an observation, you’ll receive a message in your configured channel.
The feed only sends new_observation events — not raw tool usage. Observations are generated asynchronously by the worker’s AI agent, so there’s a 1-2 second delay between tool use and the observation message appearing in your channel.

Troubleshooting the Feed

Installation

Run this one-liner to install everything automatically:
The installer handles dependency checks (Bun, uv), plugin installation, memory slot configuration, AI provider setup, worker startup, and optional observation feed configuration. Newer OpenClaw asks before installing a plugin from outside ClawHub, and cancels the install when no terminal can answer, as with curl | bash. The installer builds claude-mem from this repository and confirms that install with --force and --accept-capabilities on OpenClaw versions that offer those flags. It then allows the plugin’s conversation hooks (see Manual Configuration). On older OpenClaw, which has neither the flags nor the gate, it skips both. You can also pre-select options:

Manual Configuration

Add claude-mem to your OpenClaw gateway’s plugin configuration:
On OpenClaw versions that gate conversation hooks, a plugin installed from outside the bundled set must be allowed to use them. Without hooks.allowConversationAccess, OpenClaw loads claude-mem but blocks before_prompt_build and agent_end, so no prompts, context or summaries are recorded. The installer sets this for you; by hand, run openclaw config set plugins.entries.claude-mem.hooks.allowConversationAccess true. Older OpenClaw without the gate, such as 2026.2.9, rejects the hooks key as an unrecognized key, so leave it out there. Check what OpenClaw registered with openclaw plugins inspect claude-mem --runtime --json: typedHooks should list before_prompt_build and agent_end, and diagnostics should be empty. (Older OpenClaw has no inspect; use openclaw plugins info claude-mem --json.)
The claude-mem worker service must be running on the same machine as the OpenClaw gateway. The plugin communicates with it via HTTP on localhost:37777.

Configuration

string
default:"openclaw"
Project name for scoping observations in the memory database. All observations from this gateway will be stored under this project name.
boolean
default:true
Inject observation context into the agent system prompt via before_prompt_build hook. When true, agents receive cross-session context automatically. Set to false to disable context injection entirely (observations are still recorded).
string[]
default:[]
Agent IDs excluded from automatic context injection. Useful for agents that curate their own memory and don’t need the observation timeline (e.g., ["snarf", "debugger"]). Observations are still recorded for excluded agents — only the context injection is skipped.
number
default:37777
Port for the claude-mem worker service. Override if your worker runs on a non-default port.
boolean
default:false
Enable live observation streaming to messaging channels.
string
Channel type: telegram, discord, signal, slack, whatsapp, line
string
Target chat/user/channel ID to send observations to.

Commands

/claude_mem_feed

Show or toggle the observation feed status.

/claude_mem_status

Check worker health and session status.
Returns worker status, port, active session count, and observation feed connection state.

Architecture

The plugin uses HTTP calls to the already-running claude-mem worker service rather than spawning subprocesses. This means:
  • No bun dependency required on the gateway
  • No process spawn overhead per event
  • Uses the same worker API that Claude Code hooks use
  • All operations are non-blocking (fire-and-forget where possible)

Session Tracking

Each OpenClaw agent session gets a unique contentSessionId (format: openclaw-<sessionKey>-<timestamp>) that maps to a claude-mem session in the worker. The plugin tracks:
  • sessionIds — Maps OpenClaw session keys to content session IDs
  • contextCache — TTL cache (60s) for context injection responses, keyed by project
Both are cleared on gateway_start.

Requirements

  • Claude-mem worker service running on localhost:37777 (or configured port)
  • OpenClaw gateway with plugin support
  • Network access between gateway and worker (localhost only)