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mcp/harbor
Claude Code

Mattermost for Claude Code

io.github.toffguy77/mattermost-mcp

Mattermost: read unreads, mentions, channels and threads; opt-in posting, edits, reactions

client:Claude Code transport:stdio runtime:pypi

Install Mattermost in Claude Code

run in your project directory

Held in this page only — never stored, logged, or sent anywhere but back to your screen. 

claude mcp add mattermost-mcp -e MATTERMOST_URL=<MATTERMOST_URL> -e MATTERMOST_ACCESS_TOKEN=<MATTERMOST_ACCESS_TOKEN> -e MATTERMOST_ENABLE_WRITE=<MATTERMOST_ENABLE_WRITE> -e MATTERMOST_TOKEN=<MATTERMOST_TOKEN> -e MATTERMOST_CSRF=<MATTERMOST_CSRF> -- uvx mattermost-mcp-server

Adds it for this project only. Append --scope user to make it available everywhere. Claude Code docs

Mattermost in other clients

Mattermost MCP server