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

1. Go to your Mastodon instance → Preferences → Development → New application
2. Grant required scopes: read, write, follow
3. 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()).

Citation

This project is built on Mastodon.py. If you use it in academic work, please cite:

@article{Diener2026,
  author  = {Diener, Lorenz and Delcourt, Corentin},
  title   = {Mastodon.py: A Python library for the Mastodon API},
  journal = {Journal of Open Source Software},
  year    = {2026},
  volume  = {11},
  number  = {120},
  pages   = {8946},
  doi     = {10.21105/joss.08946},
  url     = {https://doi.org/10.21105/joss.08946}
}

See Mastodon.py's CITATION.cff for details.

License

MIT — Vítězslav Dvořák [email protected]