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@cyanheads/bluesky-mcp-server

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

7 Tools • 1 Resource

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\n\n[![Version](https://img.shields.io/badge/Version-0.1.4-blue.svg?style=flat-square)](./CHANGELOG.md) [![License](https://img.shields.io/badge/License-Apache%202.0-orange.svg?style=flat-square)](./LICENSE) [![Docker](https://img.shields.io/badge/Docker-ghcr.io-2496ED?style=flat-square&logo=docker&logoColor=white)](https://github.com/users/cyanheads/packages/container/package/bluesky-mcp-server) [![MCP SDK](https://img.shields.io/badge/MCP%20SDK-^1.29.0-green.svg?style=flat-square)](https://modelcontextprotocol.io/) [![npm](https://img.shields.io/npm/v/@cyanheads/bluesky-mcp-server?style=flat-square&logo=npm&logoColor=white)](https://www.npmjs.com/package/@cyanheads/bluesky-mcp-server) [![TypeScript](https://img.shields.io/badge/TypeScript-^6.0.3-3178C6.svg?style=flat-square)](https://www.typescriptlang.org/) [![Bun](https://img.shields.io/badge/Bun-v1.3.11-blueviolet.svg?style=flat-square)](https://bun.sh/)\n\n

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\n\n[![Install in Claude Desktop](https://img.shields.io/badge/Install_in-Claude_Desktop-D97757?style=for-the-badge&logo=anthropic&logoColor=white)](https://github.com/cyanheads/bluesky-mcp-server/releases/latest/download/bluesky-mcp-server.mcpb) [![Install in Cursor](https://cursor.com/deeplink/mcp-install-dark.svg)](https://cursor.com/en/install-mcp?name=bluesky-mcp-server&config=eyJjb21tYW5kIjoibnB4IiwiYXJncyI6WyIteSIsIkBjeWFuaGVhZHMvYmx1ZXNreS1tY3Atc2VydmVyIl19) [![Install in VS Code](https://img.shields.io/badge/VS_Code-Install_Server-0098FF?style=for-the-badge&logo=visualstudiocode&logoColor=white)](https://vscode.dev/redirect?url=vscode:mcp/install?%7B%22name%22%3A%22bluesky-mcp-server%22%2C%22command%22%3A%22npx%22%2C%22args%22%3A%5B%22-y%22%2C%22%40cyanheads%2Fbluesky-mcp-server%22%5D%7D)\n\n[![Framework](https://img.shields.io/badge/Built%20on-@cyanheads/mcp--ts--core-67E8F9?style=flat-square)](https://www.npmjs.com/package/@cyanheads/mcp-ts-core)\n\n

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\n\n**Public Hosted Server:** [https://bluesky.caseyjhand.com/mcp](https://bluesky.caseyjhand.com/mcp)\n\n

\n\n---\n\n## Tools\n\nSeven tools for read-only access to the public Bluesky/AT Protocol AppView — no authentication required:\n\n| Tool | Description |\n|:-----|:------------|\n| `bsky_search_posts` | Full-text search across public Bluesky posts, with author, language, tag, domain, date, and sort filters |\n| `bsky_get_profile` | Fetch a Bluesky actor's public profile by handle or DID — the handle↔DID resolver |\n| `bsky_get_author_feed` | A user's recent posts ordered newest-first, filterable by post type |\n| `bsky_get_post_thread` | Fetch the full conversation for a post by AT-URI — parent chain upward and reply tree downward |\n| `bsky_search_actors` | Find Bluesky accounts by name or handle fragment |\n| `bsky_get_follows` | Paginated social graph edges — who a user follows or who follows them |\n| `bsky_get_trending` | Real-time trending topics on Bluesky with post count, category, and status |\n\n### `bsky_search_posts`\n\nFull-text search across public Bluesky posts.\n\n- Filters: author handle, language (BCP-47), hashtag, domain, date range (`since`/`until`), and sort order (`top` or `latest`)\n- Returns posts with text, author, engagement counts (likes/reposts/replies/quotes), embeds, AT-URIs, and timestamps\n- `hitsTotal` when available — total matching posts, not just the current page\n- Pagination via opaque cursor; up to 100 results per call\n- Embeds normalized into a flat union: `images`, `external` (link cards), `record` (quoted posts), `video`, `unknown`\n- Moderation labels surfaced as-is — not filtered\n\n---\n\n### `bsky_get_profile`\n\nFetch a Bluesky actor's public profile by handle or DID.\n\n- Returns displayName, handle, DID, description, follower/following/post counts, avatar URL, moderation labels, and pinned post AT-URI\n- The resolution step for handle↔DID — use before tools that require a DID or AT-URI when you only have a handle\n\n---\n\n### `bsky_get_author_feed`\n\nA user's recent posts ordered newest-first.\n\n- Filter by post type: `posts_with_replies`, `posts_no_replies`, `posts_with_media`, or `posts_and_author_threads`\n- Returns posts with full text, engagement counts, embeds, and AT-URIs for thread drilling\n- Pagination via cursor\n\n---\n\n### `bsky_get_post_thread`\n\nFetch the full conversation for a post by AT-URI.\n\n- Returns the root post, parent chain (upward), and nested reply tree (downward)\n- Configurable `depth` (reply tree depth, default 6) and `parent_height` (parent chain height, default 80)\n- Truncated subtrees surface `truncated: true`; deleted posts surface as `not_found`\n- AT-URIs come from `bsky_search_posts` or `bsky_get_author_feed`\n\n---\n\n### `bsky_get_follows`\n\nFetch social graph edges for an account.\n\n- `direction`: `followers` (who follows the actor) or `following` (who the actor follows)\n- Returns paginated profiles with handle, DID, displayName, description, and follower count\n- Includes the subject's profile summary at the top level\n\n---\n\n### `bsky_get_trending`\n\nFetch real-time trending topics on Bluesky.\n\n- Returns topics with display name, post count, category (politics, sports, pop-culture, etc.), status (hot/rising), and start time\n- No cursor — returns the current snapshot up to `limit`\n- Uses `app.bsky.unspecced.getTrends` — Bluesky may change this endpoint without notice\n\n## Resource\n\n| Type | Name | Description |\n|:-----|:-----|:------------|\n| Resource | `bsky://profile/{actor}` | A Bluesky actor's public profile, addressable by handle or DID |\n\nAll resource data is also reachable via tools. Use `bsky_get_profile` for programmatic access or `bsky://profile/{actor}` to inject profile context directly.\n\n## Features\n\nBuilt on [`@cyanheads/mcp-ts-core`](https://www.npmjs.com/package/@cyanheads/mcp-ts-core):\n\n- Declarative tool and resource definitions — single file per primitive, framework handles registration and validation\n- Unified error handling — handlers throw, framework catches, classifies, and formats\n- Pluggable auth: `none`, `jwt`, `oauth`\n- Swappable storage backends: `in-memory`, `filesystem`, `Supabase`, `Cloudflare KV/R2/D1`\n- Structured logging with optional OpenTelemetry tracing\n- STDIO and Streamable HTTP transports\n\nBluesky-specific:\n\n- No authentication required — all seven tools operate against `api.bsky.app` without credentials\n- Single `BlueskyService` wrapping the AT Protocol public AppView with retry (3 attempts, 500ms base), 15s timeout, and a versioned `User-Agent`\n- Embed normalization — raw nested AT Protocol embed objects flattened to a clean `type`-discriminated union\n- Moderation labels surfaced verbatim — the agent and its human decide what to do\n- AT Protocol identifier types (handle, DID, AT-URI) explained at first encounter in every tool description\n\nAgent-friendly output:\n\n- AT-URIs on every post and resource — chain `bsky_search_posts` → `bsky_get_post_thread` without extra steps\n- Discriminated embed union (`type: \"images\" | \"external\" | \"record\" | \"video\" | \"unknown\"`) — branch on data, not `$type` strings\n- `hitsTotal` on search results — communicate result scale to users without extra round trips\n- Truncation signals (`truncated: true`) on thread nodes — agents know where the tree ends and why\n\n## Getting started\n\n### Public Hosted Instance\n\nConnect directly — no installation required:\n\n```json\n{\n \"mcpServers\": {\n \"bluesky-mcp-server\": {\n \"type\": \"streamable-http\",\n \"url\": \"https://bluesky.caseyjhand.com/mcp\"\n }\n }\n}\n```\n\n### Self-hosted\n\nAdd the following to your MCP client configuration file. No API key required.\n\n```json\n{\n \"mcpServers\": {\n \"bluesky-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"bunx\",\n \"args\": [\"@cyanheads/bluesky-mcp-server@latest\"],\n \"env\": {\n \"MCP_TRANSPORT_TYPE\": \"stdio\",\n \"MCP_LOG_LEVEL\": \"info\"\n }\n }\n }\n}\n```\n\nOr with npx (no Bun required):\n\n```json\n{\n \"mcpServers\": {\n \"bluesky-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"npx\",\n \"args\": [\"-y\", \"@cyanheads/bluesky-mcp-server@latest\"],\n \"env\": {\n \"MCP_TRANSPORT_TYPE\": \"stdio\",\n \"MCP_LOG_LEVEL\": \"info\"\n }\n }\n }\n}\n```\n\nOr with Docker:\n\n```json\n{\n \"mcpServers\": {\n \"bluesky-mcp-server\": {\n \"type\": \"stdio\",\n \"command\": \"docker\",\n \"args\": [\n \"run\", \"-i\", \"--rm\",\n \"-e\", \"MCP_TRANSPORT_TYPE=stdio\",\n \"ghcr.io/cyanheads/bluesky-mcp-server:latest\"\n ]\n }\n }\n}\n```\n\nFor Streamable HTTP, set the transport and start the server:\n\n```sh\nMCP_TRANSPORT_TYPE=http MCP_HTTP_PORT=3010 bun run start:http\n# Server listens at http://localhost:3010/mcp\n```\n\n### Prerequisites\n\n- [Bun v1.3.0](https://bun.sh/) or higher (or Node.js v24+).\n- No API key or account required — all tools call `api.bsky.app` without credentials.\n\n### Installation\n\n1. **Clone the repository:**\n\n```sh\ngit clone https://github.com/cyanheads/bluesky-mcp-server.git\n```\n\n2. **Navigate into the directory:**\n\n```sh\ncd bluesky-mcp-server\n```\n\n3. **Install dependencies:**\n\n```sh\nbun install\n```\n\n4. **Configure environment (optional):**\n\n```sh\ncp .env.example .env\n# edit .env to override any framework defaults\n```\n\n## Configuration\n\nThis server requires no API keys. All framework configuration is optional.\n\n| Variable | Description | Default |\n|:---------|:------------|:--------|\n| `MCP_TRANSPORT_TYPE` | Transport: `stdio` or `http` | `stdio` |\n| `MCP_HTTP_PORT` | Port for HTTP server | `3010` |\n| `MCP_AUTH_MODE` | Auth mode: `none`, `jwt`, or `oauth` | `none` |\n| `MCP_LOG_LEVEL` | Log level (RFC 5424) | `info` |\n| `LOGS_DIR` | Directory for log files (Node.js only) | `/logs` |\n| `STORAGE_PROVIDER_TYPE` | Storage backend | `in-memory` |\n| `OTEL_ENABLED` | Enable [OpenTelemetry instrumentation](https://github.com/cyanheads/mcp-ts-core/tree/main/docs/telemetry) | `false` |\n\nSee [`.env.example`](https://github.com/cyanheads/bluesky-mcp-server/blob/main/.env.example) for the full list of optional overrides.\n\n## Running the server\n\n### Local development\n\n- **Build and run:**\n\n ```sh\n # One-time build\n bun run rebuild\n\n # Run the built server\n bun run start:stdio\n # or\n bun run start:http\n ```\n\n- **Run checks and tests:**\n\n ```sh\n bun run devcheck # Lint, format, typecheck, security\n bun run test # Vitest test suite\n bun run lint:mcp # Validate MCP definitions against spec\n ```\n\n### Docker\n\n```sh\ndocker build -t bluesky-mcp-server .\ndocker run --rm -p 3010:3010 bluesky-mcp-server\n```\n\nThe Dockerfile defaults to HTTP transport, stateless session mode, and logs to `/var/log/bluesky-mcp-server`. OpenTelemetry peer dependencies are installed by default — build with `--build-arg OTEL_ENABLED=false` to omit them.\n\n## Project structure\n\n| Directory | Purpose |\n|:----------|:--------|\n| `src/index.ts` | `createApp()` entry point — registers tools, resource, and inits service. |\n| `src/services/bluesky` | AT Protocol AppView HTTP client with retry, timeout, and `User-Agent`. |\n| `src/mcp-server/tools` | Tool definitions (`*.tool.ts`) — seven read-only Bluesky tools. |\n| `src/mcp-server/resources` | Resource definitions (`*.resource.ts`) — `bsky://profile/{actor}`. |\n| `tests/` | Unit and integration tests mirroring `src/`. |\n\n## Development guide\n\nSee [`CLAUDE.md`](https://github.com/cyanheads/bluesky-mcp-server/blob/main/CLAUDE.md) for development guidelines and architectural rules. The short version:\n\n- Handlers throw, framework catches — no `try/catch` in tool logic\n- Use `ctx.log` for request-scoped logging, `ctx.state` for tenant-scoped storage\n- Register new tools and resources via the arrays in `src/index.ts`\n- Wrap external API calls: validate raw → normalize to domain type → return output schema; never fabricate missing fields\n\n## Contributing\n\nIssues and pull requests are welcome. Run checks and tests before submitting:\n\n```sh\nbun run devcheck\nbun run test\n```\n\n## License\n\nApache-2.0 — see [LICENSE](https://github.com/cyanheads/bluesky-mcp-server/blob/main/LICENSE) for details.\n","changelogMarkdown","videoKey","requiredSecretsJson","publishedAt","priceCents","trialDays","categoryDisplayName","Developer Tools","upstream",{"_97":98,"_99":100,"_101":102,"_103":104,"_105":106},"requiredSecrets",[],"tags",[],"assets",[],"stats",{"_95":57,"_96":57},"ratingAvg","reviewCount","topics",[107,108,109,110,19,111,112,113,114,115],"license","Apache-2.0","language","TypeScript","registryName","io.github.cyanheads/bluesky-mcp-server","homepage","https://www.npmjs.com/package/@cyanheads/bluesky-mcp-server","ai-agents","ai-tools","atproto","bluesky","mcp","mcp-server","model-context-protocol","social","typescript","ENV",{"_118":119,"_120":121,"_122":123},"ENVIRONMENT","production","TURNSTILE_SITE_KEY","0x4AAAAAAB8-rEI2gNDf_QhU","SENTRY_DSN","https://45fd1229f78089d5c3ee78be128030e1@o4510583261757440.ingest.de.sentry.io/4510584253448272"]