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Mattermost

io.github.mattermost/mattermost-plugin-agents ยท v2.12.0

Official Mattermost MCP server, built into the Mattermost Agents plugin. Read, search and post.

Website Source code Set it up

Connect Remote server

Terminal
claude mcp add --transport http mattermost-plugin-agents https://{mattermost_host}/plugins/mattermost-ai/mcp-server/mcp --header "Authorization: Bearer <YOUR_API_KEY>"
~/.cursor/mcp.json
{
  "mcpServers": {
    "mattermost-plugin-agents": {
      "url": "https://{mattermost_host}/plugins/mattermost-ai/mcp-server/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
.vscode/mcp.json
{
  "servers": {
    "mattermost-plugin-agents": {
      "type": "http",
      "url": "https://{mattermost_host}/plugins/mattermost-ai/mcp-server/mcp",
      "headers": {
        "Authorization": "Bearer <YOUR_API_KEY>"
      }
    }
  }
}
Claude Desktop
Settings > Connectors > Add custom connector
URL: https://{mattermost_host}/plugins/mattermost-ai/mcp-server/mcp

Replace the values in angle brackets with your own. Keys stay on your machine; we never see them.

Tools

The tool list was not available in our last check.

Headers

NameDescription
Authorization
Optional, secret		Optional. OAuth 2.0 with dynamic client registration is the default and needs no header. To use a Mattermost Personal Access Token instead, set this to Bearer followed by the token.

Details

Endpointhttps://{mattermost_host}/plugins/mattermost-ai/mcp-server/mcp (Streamable HTTP)
First published3 Nov 2026
Last updated3 Nov 2026
Registry nameio.github.mattermost/mattermost-plugin-agents

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