@mulmobridge/mattermost
@mulmobridge/mattermost
Experimental — please test and report issues.
Mattermost bridge for MulmoClaude. Uses the WebSocket API — no public URL needed.
Setup
1. Create a Bot Account
- Go to Integrations → Bot Accounts → Add Bot Account (requires admin)
- Set a username (e.g.
mulmo-bot) and display name - Copy the Access Token
2. Run the bridge
# Testing with mock server
npx @mulmobridge/mock-server &
MATTERMOST_URL=https://mattermost.example.com \
MATTERMOST_BOT_TOKEN=... \
MULMOCLAUDE_AUTH_TOKEN=mock-test-token \
npx @mulmobridge/mattermost
# With real MulmoClaude
MATTERMOST_URL=https://mattermost.example.com \
MATTERMOST_BOT_TOKEN=... \
npx @mulmobridge/mattermost
3. Add the bot to a channel
In Mattermost, add the bot to channels where you want it to respond.
Environment Variables
| Variable | Required | Description |
|---|---|---|
MATTERMOST_URL |
Yes | Server URL (e.g. https://mm.example.com) |
MATTERMOST_BOT_TOKEN |
Yes | Bot account access token |
MATTERMOST_ALLOWED_CHANNELS |
No | CSV of channel IDs (empty = all) |
MULMOCLAUDE_API_URL |
No | Default http://localhost:3001 |
MULMOCLAUDE_AUTH_TOKEN |
No | Bearer token |
MATTERMOST_BRIDGE_DEFAULT_ROLE |
No | Role id to seed new bridge sessions with (e.g. coder, general). Applied ONLY when a mattermost session first appears — once the user switches role via /role <id> the session's own role wins. Unknown role ids silently fall back to the server's default with a warn log. |
BRIDGE_DEFAULT_ROLE |
No | Same as above but shared across every bridge. Transport-specific MATTERMOST_BRIDGE_DEFAULT_ROLE wins when both are set. |
Auth token persistence across server restarts
The MulmoClaude server regenerates a fresh bearer token on every startup and writes it to ~/mulmoclaude/.session-token. The bridge reads that file once at launch and keeps the token in memory — so if the server restarts while the bridge is running, the bridge keeps using the old token and every API call returns 401, silently.
Fix: set MULMOCLAUDE_AUTH_TOKEN to the same long random value on both the server and the bridge. The server uses it verbatim instead of regenerating, so the token survives restarts and the bridge stays authenticated.
# Server (one-time setup — same value across restarts)
MULMOCLAUDE_AUTH_TOKEN=long-random-string yarn dev
# Bridge (separate process / machine — same value)
MULMOCLAUDE_AUTH_TOKEN=long-random-string \
<bridge-specific-envs> \
npx <this-package>@latest
Recommended: at least 32 characters of random data (the server logs a warning at startup for shorter values).
Ecosystem
Part of the @mulmobridge/* package family.
Shared libraries:
@mulmobridge/client— socket.io client library used by every bridge below@mulmobridge/protocol— wire types and constants@mulmobridge/chat-service— server-side relay + session store@mulmobridge/relay— Cloudflare Workers webhook proxy@mulmobridge/mock-server— mock server for local bridge development
Bridges (one npm package per platform):
@mulmobridge/bluesky— Bluesky DMs over atproto@mulmobridge/chatwork— Chatwork (Japanese business chat)@mulmobridge/cli— interactive terminal bridge@mulmobridge/discord— Discord bot via Gateway@mulmobridge/email— IMAP poll + SMTP reply, threading preserved@mulmobridge/google-chat— Google Chat via MulmoBridge relay@mulmobridge/irc— IRC (Libera, Freenode, custom)@mulmobridge/line— LINE Messaging API via MulmoBridge relay@mulmobridge/line-works— LINE Works (enterprise LINE)@mulmobridge/mastodon— Mastodon DMs + mentions@mulmobridge/matrix— Matrix / Element@mulmobridge/mattermost— Mattermost ← this package@mulmobridge/messenger— Facebook Messenger via MulmoBridge relay@mulmobridge/nostr— Nostr NIP-04 encrypted DMs@mulmobridge/rocketchat— Rocket.Chat@mulmobridge/signal— Signal via signal-cli-rest-api@mulmobridge/slack— Slack Socket Mode@mulmobridge/teams— Microsoft Teams via Bot Framework@mulmobridge/telegram— Telegram bot@mulmobridge/twilio-sms— SMS via Twilio Programmable Messaging@mulmobridge/viber— Viber Public Account bots@mulmobridge/webhook— generic HTTP webhook bridge@mulmobridge/whatsapp— WhatsApp Cloud API via MulmoBridge relay@mulmobridge/xmpp— XMPP / Jabber@mulmobridge/zulip— Zulip
License
MIT