mastodon-mcp-server

A comprehensive MCP (Model Context Protocol) server for Mastodon integration. Enables AI assistants and other MCP clients to interact with Mastodon instances — read timelines, post statuses, manage accounts, search, and more.

Features

Timelines: home, local, public, hashtag
Statuses: post, delete, favourite, reblog, bookmark
Accounts: follow, unfollow, block, mute, relationships, profile update
Notifications: read, dismiss individual or all
Search: accounts, statuses, hashtags
Trending: tags, statuses, links
Lists: create, delete, manage members
Media: upload attachments
Polls: vote
Read-only mode: safe browsing without write access
STDIO and HTTP transports: works with any MCP-compatible client

Installation

Debian 13+ / Ubuntu 24+

apt install mastodon-mcp-server

pip

pip install mastodon-mcp-server

From source

git clone https://github.com/VitexSoftware/mastodon-mcp-server.git
cd mastodon-mcp-server
pip install -e .

Configuration

Copy .env.example to .env and fill in your credentials:

cp .env.example .env

Variable	Required	Default	Description
`MASTODON_INSTANCE`	yes	—	Mastodon instance URL (e.g. `https://mastodon.social` or just `mastodon.social`)
`MASTODON_ACCESS_TOKEN`	yes	—	OAuth access token
`READ_ONLY`	no	`false`	Disable all write operations
`MASTODON_MCP_TRANSPORT`	no	`stdio`	Transport: `stdio` or `streamable-http`
`MASTODON_MCP_HOST`	no	`127.0.0.1`	HTTP transport bind address
`MASTODON_MCP_PORT`	no	`8000`	HTTP transport port
`MASTODON_MCP_STATELESS_HTTP`	no	`false`	Disable HTTP session state
`DEBUG`	no	`false`	Enable verbose logging

Getting an Access Token

Go to your Mastodon instance → Preferences → Development → New application
Grant required scopes: read, write, follow
Copy the Your access token value

Client Setup

Claude Code (CLI)

claude mcp add --scope user mastodon /usr/bin/mastodon-mcp \
  -e MASTODON_INSTANCE=mastodon.social \
  -e MASTODON_ACCESS_TOKEN=your-token-here

Claude Desktop

~/.config/claude/claude_desktop_config.json:

{
  "mcpServers": {
    "mastodon": {
      "command": "mastodon-mcp",
      "env": {
        "MASTODON_INSTANCE": "https://mastodon.social",
        "MASTODON_ACCESS_TOKEN": "your-token-here"
      }
    }
  }
}

Warp Terminal

~/.warp/mcp_config.json:

{
  "mcpServers": {
    "mastodon": {
      "command": "/usr/bin/mastodon-mcp",
      "args": [],
      "env": {
        "MASTODON_INSTANCE": "https://mastodon.social",
        "MASTODON_ACCESS_TOKEN": "your-token-here"
      }
    }
  }
}

VSCode (GitHub Copilot / Continue)

~/.config/Code/User/mcp.json:

{
  "servers": {
    "MastodonMCP": {
      "type": "stdio",
      "command": "/usr/bin/mastodon-mcp",
      "args": [],
      "env": {
        "MASTODON_INSTANCE": "https://mastodon.social",
        "MASTODON_ACCESS_TOKEN": "your-token-here"
      }
    }
  }
}

HTTP transport (any MCP client)

MASTODON_MCP_TRANSPORT=streamable-http mastodon-mcp

Usage

usage: mastodon-mcp [-h] [--version]

Model Context Protocol server for Mastodon integration.

options:
  -h, --help  show this help message and exit
  --version   show program's version number and exit

Environment variables:
  MASTODON_INSTANCE          Mastodon instance URL (required)
  MASTODON_ACCESS_TOKEN      OAuth access token (required)
  MASTODON_MCP_TRANSPORT     Transport mode: stdio (default) or streamable-http
  MASTODON_MCP_HOST          HTTP bind address (default: 127.0.0.1)
  MASTODON_MCP_PORT          HTTP port (default: 8000)
  MASTODON_MCP_STATELESS_HTTP  Disable HTTP session state (default: false)
  READ_ONLY                  Restrict to read-only operations (default: false)
  DEBUG                      Enable verbose logging (default: false)

Available Tools

Instance

Tool	Description
`instance_info`	Instance name, description, version, rules

Accounts

Tool	Description
`account_verify`	Own profile
`account_get`	Account by numeric ID
`account_search`	Search accounts by username or display name
`account_statuses`	Posts by an account
`account_followers` / `account_following`	Social graph
`account_follow` / `account_unfollow`	Follow management
`account_block` / `account_unblock`	Block management
`account_mute` / `account_unmute`	Mute management
`account_relationships`	Relationship to one or more accounts
`account_update`	Update own display name, bio, locked status

Timelines

Tool	Description
`timeline_home`	Home timeline (followed accounts)
`timeline_local`	Local instance public timeline
`timeline_public`	Federated public timeline
`timeline_hashtag`	Statuses with a specific hashtag

Statuses

Tool	Description
`status_get`	Single status by ID
`status_context`	Thread ancestors and descendants
`status_post`	Post a new status (supports CW, visibility, media, polls)
`status_delete`	Delete own status
`status_favourite` / `status_unfavourite`	Favourite management
`status_reblog` / `status_unreblog`	Boost management
`status_bookmark` / `status_unbookmark`	Bookmark management
`status_favourited_by` / `status_reblogged_by`	Who engaged with a status

Notifications

Tool	Description
`notifications_get`	List notifications (filterable by type)
`notification_dismiss`	Dismiss a single notification
`notifications_clear`	Clear all notifications

Search & Discovery

Tool	Description
`search`	Search accounts, statuses, and hashtags
`trending_tags`	Trending hashtags
`trending_statuses`	Trending statuses
`trending_links`	Trending links/articles
`directory`	Browse the instance profile directory

Collections

Tool	Description
`favourites`	Own favourited statuses
`bookmarks`	Own bookmarked statuses
`mutes`	Muted accounts
`blocks`	Blocked accounts

Lists

Tool	Description
`lists_get`	All lists
`list_accounts`	Accounts in a list
`list_create` / `list_delete`	Create/delete lists
`list_accounts_add` / `list_accounts_delete`	Add/remove list members

Polls

Tool	Description
`poll_vote`	Vote in a poll

Follow Requests

Tool	Description
`follow_requests`	Pending follow requests
`follow_request_authorize` / `follow_request_reject`	Accept/reject requests

Media

Tool	Description
`media_post`	Upload image/video/audio attachment

Future Tools (Mastodon.py ≥ 2.x / Mastodon server ≥ 3.5)

The following tools are implemented but commented out in server.py. Uncomment them when your distribution ships python3-mastodon >= 2.0.1 (already available on Debian 13/trixie):

Tool	Requirement
`status_update`	Edit a status (server 3.5+)
`status_history`	Edit history (server 3.5+)
`status_source`	Plain-text source for editing
`status_translate`	Translate a status (server 4.0+)
`conversations`	Direct-message conversations
`scheduled_statuses`	List scheduled posts
`scheduled_status_update`	Reschedule a post
`scheduled_status_delete`	Cancel a scheduled post
`notifications_unread_count`	Unread notification count

Testing

# Offline (tool registration + helper functions + version check)
python3 scripts/test_server.py

# With live instance
MASTODON_INSTANCE=mastodon.social \
MASTODON_ACCESS_TOKEN=your-token \
python3 scripts/test_server.py

Architecture

The server uses a bundled stdlib-only MCP implementation (mastodon_mcp_server/_mcp.py) so it has no dependency on python3-fastmcp or its deep dependency chain. This makes packaging for Debian/Ubuntu straightforward. The implementation is compatible with the FastMCP decorator API (@mcp.tool()).

License

MIT — Vítězslav Dvořák [email protected]