activitypub-mcp

A Model Context Protocol server enabling LLMs to explore and interact with the Fediverse. It provides read-only tools by default for discovering actors, fetching timelines, searching, and reading trending content. Write capabilities like posting and following are opt-in via environment configuration, allowing authenticated interactions with Mastodon-family and Misskey servers.

Package and access

Local package with source-attributed installation metadata. Koskamo does not execute packages during review.

Community listingLocal stdioSource reviewed; not executedPublished by cameronrye

Vendor documentation

What you can do with it

Discover actors and instances on the Fediverse
Fetch public timelines and trending hashtags
Search for posts and users across compatible servers
Post, reply, boost, or follow accounts with authenticated access

Source and maintenance

Community listingRegistry 3.2.1

mcp-registry: io.github.cameronrye/activitypub-mcp@3.2.1 Source repository

Maintenance checked: Nov 1, 2026, 10:52 AM UTC

Packages and installation

Source-provided package data. Koskamo has not executed or live-probed this package.

activitypub-mcp 3.2.1

npmnpx

activitypub-mcp package definition

{
  "version": "3.2.1",
  "transport": "stdio",
  "identifier": "activitypub-mcp",
  "runtimeHint": "npx",
  "registryType": "npm",
  "registryBaseUrl": "https://registry.npmjs.org",
  "environmentVariables": [
    {
      "name": "ACTIVITYPUB_ENABLE_WRITES",
      "default": "false",
      "description": "Enable write/mutation tools (post, reply, follow, boost, block). Off by default: read-only unless set to 'true'. See SECURITY.md."
    },
    {
      "name": "LOG_LEVEL",
      "default": "info",
      "description": "Logging verbosity: debug, info, warn, or error."
    }
  ]
}

Tools

Reported by the attributed source; not independently observed by Koskamo.

No tool definitions available.

Connect from your client

Each snippet configures the same source-provided package; replace placeholders before use.

This server is operated by the named third party. Listing and endpoint checks are not an endorsement or a security audit. Review the operator's permissions, terms, and data handling before connecting. How listings are checked and corrected.

Cursor

Merge this local stdio configuration, replace every placeholder environment value, and restart Cursor. Koskamo has not executed this package.

Cursor configuration

{
  "mcpServers": {
    "activitypub-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "activitypub-mcp@3.2.1"
      ],
      "env": {
        "ACTIVITYPUB_ENABLE_WRITES": "<YOUR_ACTIVITYPUB_ENABLE_WRITES>",
        "LOG_LEVEL": "<YOUR_LOG_LEVEL>"
      }
    }
  }
}

Cline

Merge this local stdio configuration, replace every placeholder environment value, and restart Cline. Koskamo has not executed this package.

Cline configuration

{
  "mcpServers": {
    "activitypub-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "activitypub-mcp@3.2.1"
      ],
      "env": {
        "ACTIVITYPUB_ENABLE_WRITES": "<YOUR_ACTIVITYPUB_ENABLE_WRITES>",
        "LOG_LEVEL": "<YOUR_LOG_LEVEL>"
      }
    }
  }
}

VS Code

Merge this local stdio configuration, replace every placeholder environment value, and restart VS Code. Koskamo has not executed this package.

VS Code configuration

{
  "servers": {
    "activitypub-mcp": {
      "type": "stdio",
      "command": "npx",
      "args": [
        "-y",
        "activitypub-mcp@3.2.1"
      ],
      "env": {
        "ACTIVITYPUB_ENABLE_WRITES": "<YOUR_ACTIVITYPUB_ENABLE_WRITES>",
        "LOG_LEVEL": "<YOUR_LOG_LEVEL>"
      }
    }
  }
}

Claude Desktop

Merge this local stdio configuration, replace every placeholder environment value, and restart Claude Desktop. Koskamo has not executed this package.

Claude Desktop configuration

{
  "mcpServers": {
    "activitypub-mcp": {
      "command": "npx",
      "args": [
        "-y",
        "activitypub-mcp@3.2.1"
      ],
      "env": {
        "ACTIVITYPUB_ENABLE_WRITES": "<YOUR_ACTIVITYPUB_ENABLE_WRITES>",
        "LOG_LEVEL": "<YOUR_LOG_LEVEL>"
      }
    }
  }
}

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