Can I use Mastodon as a CLI?

Yes. KosmoKrator exposes a Mastodon CLI through kosmo integrations:call and the provider shortcut command. Commands can return JSON for scripts, CI, and coding agents.

Can I expose Mastodon through MCP?

Yes. The KosmoKrator MCP gateway can expose selected Mastodon tools to clients such as Claude Code, Cursor, Codex, and other MCP-compatible tools.

Where are Mastodon credentials stored?

Mastodon credentials are configured in KosmoKrator's local integration settings and reused by CLI, Lua, and MCP gateway surfaces.

Can I deny write access for Mastodon MCP tools?

Yes. Start the gateway with --write=deny for read-only clients, or use ask/allow only for trusted workspaces.

social

Mastodon MCP Integration for Claude Agent SDK

Connect Mastodon to Claude Agent SDK through the local KosmoKrator MCP gateway with scoped tools, credentials, and write policy.

6 functions 5 read 1 write Bearer token auth

Submit Mastodon feedback View package source

Connect Mastodon to Claude Agent SDK

Give Claude Agent SDK workflows access to KosmoKrator integrations through a local MCP server.

Add a KosmoKrator stdio MCP server to the Claude Agent SDK options. The gateway is local, scoped to this integration, and starts with --write=deny so Claude Agent SDK can inspect read-capable tools without receiving write access by default.

Mastodon MCP Config for Claude Agent SDK

Use a narrow integration list so the agent does not load unrelated tools.

{
  "mcpServers": {
    "kosmokrator-mastodon": {
      "type": "stdio",
      "command": "kosmo",
      "args": [
        "mcp:serve",
        "--integration=mastodon",
        "--write=deny"
      ]
    }
  }
}

Run the Gateway Manually

kosmokrator mcp:serve --integration=mastodon --write=deny

Why Use KosmoKrator Here

Scoped tools

Expose only Mastodon instead of a broad multi-service tool list.

Local credentials

Reuse credentials already configured for the KosmoKrator CLI and Lua runtime.

Write policy

Start read-only, then opt into ask or allow for trusted workspaces.

Mastodon Tools Visible to Claude Agent SDK

Claude Agent SDK sees stable MCP tool names generated from the Mastodon integration catalog.

MCP tool	Source function	Type	Description
`integration__mastodon__mastodon_list_statuses`	`mastodon.mastodon_list_statuses`	Read	Browse statuses (toots) from a Mastodon timeline. Use "home" for your home feed, "public" for the federated timeline, or "local" for the local instance timeline. Supports pagination.
`integration__mastodon__mastodon_get_status`	`mastodon.mastodon_get_status`	Read	Retrieve a single Mastodon status (toot) by its ID. Returns the full post content, author details, and engagement metrics.
`integration__mastodon__mastodon_create_status`	`mastodon.mastodon_create_status`	Write	Publish a new status (toot) on Mastodon. Supports content warnings, visibility controls (public, unlisted, private, direct), replies, and language settings.
`integration__mastodon__mastodon_list_accounts`	`mastodon.mastodon_list_accounts`	Read	List followers of a Mastodon account. Returns account profiles with display names, bios, and follower counts. Supports pagination.
`integration__mastodon__mastodon_get_account`	`mastodon.mastodon_get_account`	Read	Retrieve a Mastodon account profile by ID. Returns display name, bio, follower counts, and other profile details.
`integration__mastodon__mastodon_get_current_user`	`mastodon.mastodon_get_current_user`	Read	Get the authenticated user's Mastodon profile. Returns display name, bio, follower/following counts, and other account details.

Related Mastodon Pages

Mastodon CLIUse direct JSON commands instead of MCP discovery. Mastodon MCPFull gateway reference and MCP tool names. KosmoKrator for Claude Agent SDKClient-level gateway setup.