Mattermost

Mattermost WebSocket API

Real-time WebSocket event stream for Mattermost v4. Clients connect to /api/v4/websocket, authenticate via cookie, Authorization header, or an authentication_challenge action, and receive event envelopes (event, data, broadcast, seq) covering posts, channels, users, teams, reactions, typing, status, threads, plugins, and more. Client actions user_typing, get_statuses, and get_statuses_by_ids are supported over the same socket.

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Documentation

📖
Documentation
https://developers.mattermost.com/api-documentation
📖
APIReference
https://developers.mattermost.com/integrate/reference/rest-api/

Specifications

⚙
AsyncAPI
https://raw.githubusercontent.com/api-evangelist/mattermost/refs/heads/main/asyncapi/mattermost-asyncapi.yml

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AsyncAPI Specification

mattermost-asyncapi.yml Raw ↑