Machine Library MCP Server

Machine Library: cited search over papers, books, patents and social posts, with agent comments. Its 4 documented tools cover machinelibrary, document. It is available as a remote MCP endpoint.

Teams that work with machinelibrary and document and want a hosted endpoint instead of running a local process. The project is written in Python.

VERIFIED ACTIVE

LAST COMMIT 2026-09-29 · ★ 11 · #91 OF 117 MAINTAINED AI & ML · VERIFIED 2026-09-30

MIT · Python servers · how we verify → /methodology

01 · Install Machine Library

before you install - you'll need

Set SEARCH_API_ENDPOINT, SPACE_FRONTIERS_API_KEY before connecting.

Claude Code

claude mcp add spacefrontiers-mcp --transport http https://mcp.machinelibrary.ai/

Claude Desktop / Cursor / VS Code - add to config

{
  "mcpServers": {
    "spacefrontiers-mcp": {
      "url": "https://mcp.machinelibrary.ai/"
    }
  }
}

Same JSON for Cursor. For VS Code, rename the top-level key from `mcpServers` to `servers`.

Using another client? Same JSON, different key

Claude Desktop · mcpServers

Cursor · mcpServers

VS Code · servers

Windsurf · mcpServers

Zed · context_servers

Cline · mcpServers

Roo Code · mcpServers

Continue · mcpServers

LibreChat · mcpServers

Gemini CLI · mcpServers

Codex CLI · mcp_servers

Full setup guides: every client.

02 · Evidence

https://mcp.machinelibrary.ai/

transport: streamable-http

endpoint alive - authentication required · probed 2026-09-30

Security posture

What to check before giving this server access to your agent - from the registry, GitHub, and our own probes. We don't score safety; we show what's verifiable.

runs as remote - your agent's requests go to mcp.machinelibrary.ai

endpoint auth requires authentication - rejected our unauthenticated MCP initialize

license MIT - declared in the repository

registry namespace io.github.SpaceFrontiers is GitHub-verified and matches the repo owner

03 · What Machine Library can do

Prose above is summarized from the project's README and registry record - no invented capabilities.

What you can build

An agent gets 4 documented tools spanning machinelibrary, document, including machinelibrary_search_documents, machinelibrary_search_social, machinelibrary_fetch_document, machinelibrary_search_in_document.

The 4 tools it gives your agent

Extracted from the project's README - what Machine Library lets an agent do.

machinelibrary_search_documents: - Papers, books, patents, standards, Wikipedia, YouTube transcripts. Use for citations and prior art.
machinelibrary_search_social: - Reddit, Telegram channels, Discord. Use for news and community discussion.
machinelibrary_fetch_document: - Bounded full text + up to 50 references for one canonical URI. Defaults to 40K characters; supports up to 100K.
machinelibrary_search_in_document: - Up to five matching passages within one document. Use for documents over ~20K tokens.

04 · Who maintains Machine Library

Machine Library is maintained by spacefrontiers. It's the only MCP server we track from this author; the repo dates to Apr 2025.

05 · Facts

repository: github.com/spacefrontiers/mcp
website: https://machinelibrary.ai/mcp
category: AI & ML - ranked #91 of 117 actively-maintained AI & ML servers as of 2026-09-30.
registry: io.github.SpaceFrontiers/mcp (active, first published 2026-05-07 · 5 versions)

06 · Machine Library FAQ

Is Machine Library still maintained?

Yes - as of 2026-09-30, its last commit was 2026-09-29. We re-verify nightly.

What can Machine Library do?

How do I install Machine Library?

Run `claude mcp add spacefrontiers-mcp --transport http https://mcp.machinelibrary.ai/`. The README documents 2 environment variables (SEARCH_API_ENDPOINT, SPACE_FRONTIERS_API_KEY) to set first. Set SEARCH_API_ENDPOINT, SPACE_FRONTIERS_API_KEY before connecting. You can also paste the ready-made client config above.

Does Machine Library require authentication?

Yes - when we probed the endpoint on 2026-09-30, it rejected an unauthenticated MCP initialize; you'll need credentials to connect.

07 · Alternatives to Machine Library

Alternatives to Machine Library

Maintained AI & ML servers if Machine Library isn't the fit.

Pairs well with

Servers that cover what Machine Library doesn't - only shown when the pairing reason fits the companion.

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