Bluesky MCP Server

Search posts, profiles, feeds, threads, and trending topics on Bluesky via MCP. STDIO or Streamable HTTP.

Remote serverstreamable-http

What is the Bluesky MCP server?

Bluesky MCP server is a hosted integration for AI assistants that speak the Model Context Protocol. Search posts, profiles, feeds, threads, and trending topics on Bluesky via MCP. STDIO or Streamable HTTP.

What you get

  • Declarative tool and resource definitions — single file per primitive, framework handles registration and validation
  • Unified error handling — handlers throw, framework catches, classifies, and formats
  • Pluggable auth: none, jwt, oauth
  • Swappable storage backends: in-memory, filesystem, Supabase, Cloudflare KV/R2/D1
  • Structured logging with optional OpenTelemetry tracing
  • STDIO and Streamable HTTP transports

What the assistant can call

Once Bluesky is connected, these are the calls the assistant has available:

  • bsky_search_posts — Full-text search across public Bluesky posts, with author, language, tag, date, and sort filters
  • bsky_get_profile — Fetch a Bluesky actor's public profile by handle or DID — the handle↔DID resolver
  • bsky_get_author_feed — A user's recent posts ordered newest-first, filterable by post type
  • bsky_get_post_thread — Fetch the conversation for a post by AT-URI — parent chain upward and reply tree downward, with what Bluesky counted but did not return
  • bsky_search_actors — Find Bluesky accounts by name or handle fragment
  • bsky_get_follows — Paginated social graph edges — who a user follows or who follows them
  • bsky_get_trending — Real-time trending topics on Bluesky with post count, category, status, and the accounts driving each topic
  • Prerequisites — The Prerequisites tool exposed by this server
  • Installation — The Installation tool exposed by this server

Configuration and credentials

You will need 2 environment variables: MCP_TRANSPORT_TYPE, MCP_LOG_LEVEL. Keep credentials in your client's env block or a secrets manager rather than in a file you might commit.

  • Bun v1.3.0 or higher (or Node.js v24+). - No API key or account required — all tools call api.bsky.app without credentials.

Setting it up

Being a remote server, there is no local install. You register the endpoint with your client, authorise it once, and the tools appear.

Choosing this one

Among the file and storage access options, the useful question is rarely "what can it do" but "what does it cost you to run" — permissions, credentials, and how much of your context its toolset consumes. Bluesky's toolset — bsky_search_posts, bsky_get_profile, bsky_get_author_feed and 6 more — is a fair guide to whether it matches your workflow. It is maintained by cyanheads; worth a glance at recent repository activity before you build anything load-bearing on it.

SyncDev reviews every entry in this directory against the project's own documentation before publishing, and revisits them as servers change.

Before you rely on it

  • Your data travels to the provider's service, so the usual questions apply about what you send and what they retain.
  • With 9 tools registered it takes up a noticeable share of the context window; turn it off in projects that never touch Bluesky.
  • MCP clients confirm each tool call by default. Leave that on until you have watched what the bluesky mcp server does with a few real requests.

Available tools

ToolWhat it does
bsky_search_postsFull-text search across public Bluesky posts, with author, language, tag, date, and sort filters
bsky_get_profileFetch a Bluesky actor's public profile by handle or DID — the handle↔DID resolver
bsky_get_author_feedA user's recent posts ordered newest-first, filterable by post type
bsky_get_post_threadFetch the conversation for a post by AT-URI — parent chain upward and reply tree downward, with what Bluesky counted but did not return
bsky_search_actorsFind Bluesky accounts by name or handle fragment
bsky_get_followsPaginated social graph edges — who a user follows or who follows them
bsky_get_trendingReal-time trending topics on Bluesky with post count, category, status, and the accounts driving each topic
PrerequisitesThe Prerequisites tool exposed by this server.
InstallationThe Installation tool exposed by this server.

How to install the Bluesky MCP server

{
  "mcpServers": {
    "bluesky-mcp-server": {
      "type": "streamable-http",
      "url": "https://bluesky.caseyjhand.com/mcp"
    }
  }
}

Configuration as documented by the project. Restart the client after saving.

Configuration

  • Bun v1.3.0 or higher (or Node.js v24+). - No API key or account required — all tools call api.bsky.app without credentials.
VariableDescriptionRequired
MCP_TRANSPORT_TYPEConfiguration value read at startup.Optional
MCP_LOG_LEVELConfiguration value read at startup.Optional

Example prompts to try

  • Use Bluesky to bsky search posts.
  • Use Bluesky to bsky get profile.
  • Use Bluesky to bsky get author feed.

Frequently asked questions

It connects Bluesky to MCP-compatible AI assistants such as Claude and Cursor, exposing 9 tools (bsky_search_posts, bsky_get_profile, bsky_get_author_feed, and more) that the assistant can call on your behalf. Instead of copying data back and forth by hand, the assistant works with Bluesky directly.