What credentials are required?
You need the Mattermost API URL (typically `https://your-mattermost-domain.com/api/v4`), a personal access token, and the team ID. All three are mandatory.
@conarti
基本情報
MCP Server for Mattermost API. Enables Claude and other MCP clients to interact with Mattermost workspaces - list channels, read/post messages, manage threads, reactions, and monitor topics. Supports flexible configuration via CLI args, environment variables, or config files.
以下の設定を使って、このサーバーを MCP 対応クライアントに追加してください。
{
"mcpServers": {
"mattermost": {
"command": "npx",
"args": [
"-y",
"@conarti/mattermost-mcp"
],
"env": {
"MATTERMOST_URL": "https://your-mattermost.com/api/v4",
"MATTERMOST_TOKEN": "your-token",
"MATTERMOST_TEAM_ID": "your-team-id"
}
}
}
}List channels in the Mattermost workspace. By default lists public team channels. Set include_private=true to get all channels including private channels and direct messages (DMs).
Get messages from a Mattermost channel. By default returns ALL messages. Use limit parameter to restrict the number of messages.
Post a new message to a Mattermost channel
Reply to a specific message thread in Mattermost
Add a reaction emoji to a message
Get all replies in a message thread
Get a list of users in the Mattermost workspace with pagination
Get detailed profile information for a specific user
Run the topic monitoring process immediately
Mattermost Mcp is a Model Context Protocol server that enables Claude and other MCP clients to interact with Mattermost workspaces via the Mattermost API. It provides tools for reading and writing messages, managing channels, and monitoring topics.
Run it with npx @conarti/mattermost-mcp and provide the Mattermost URL, a personal access token, and the team ID via CLI arguments, environment variables, or a config file. Integrate with Claude Code by adding the server to the MCP settings in ~/.claude/claude_desktop_config.json.
You need the Mattermost API URL (typically `https://your-mattermost-domain.com/api/v4`), a personal access token, and the team ID. All three are mandatory.
In Mattermost, go to **Account Settings** → **Security** → **Personal Access Tokens**, create a new token, and copy it immediately (it will not be shown again).
Open your browser’s developer tools, refresh the page, and look for API calls containing `teams/` – the ID is in the URL. Alternatively, use `curl -H "Authorization: Bearer YOUR_TOKEN" https://your-mattermost.com/api/v4/teams`.
Configuration can be provided via CLI arguments (highest priority), environment variables (`MATTERMOST_URL`, `MATTERMOST_TOKEN`, `MATTERMOST_TEAM_ID`), a local `config.local.json` (gitignored), or the default `config.json`.
Yes, use the `--run-monitoring` flag to trigger monitoring immediately on startup, and optionally `--exit-after-monitoring` to exit after the run (useful for cron jobs).
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