Machine Library MCP Server

Hosted Streamable-HTTP MCP server at https://mcp.machinelibrary.ai (legacy https://mcp.spacefrontiers.org still served) exposing four read-only, idempotent retrieval tools (spacefrontiers_search_documents, spacefrontiers_search_social, spacefrontiers_fetch_document, spacefrontiers_search_in_document), a hosted spacefrontiers_top_up_balance payment tool, a deep_research_agent prompt and a spacefrontiers://document/{uri_b64} resource template. OAuth 2.1 with PKCE and RFC 7591 dynamic client registration against https://api.spacefrontiers.org, or a Bearer API key. Listed in the official MCP registry as io.github.SpaceFrontiers/mcp; source is MIT-licensed on GitHub.

Work with this as data

Every API here is available over the APIs.io API and to AI agents over MCP.

MCP server

One button, every client — Claude, Cursor, VS Code and the rest.

https://apis.io/mcp

Tools for apis

7 MCP tools reach this
  • find_apisBrowse and filter every API in the catalog.
  • get_api_artifactsOne API's artifacts, grouped by type.
  • get_openapiThe primary OpenAPI for this API.
  • find_similar_apisAPIs that look like this one.
  • apis_io_searchSTART HERE — APIs, providers and tags for one query, each with its total.
  • resolveTurn a domain, URL or GitHub org into the provider it belongs to.
  • find_cohortsEvery scored population of providers in the catalog.
All 92 tools →

Call it yourself

curl for this page
This API
curl "https://apis.io/api/v1/apis/machine-library-mcp-server"
All apis
curl "https://apis.io/api/v1/apis?limit=25"

Discovery needs no key. Ratings and market analysis are Pro.

Get an API key

Free tier, no form to fill in. Signing in shares your email address with us — we store it to create your key and to recognise you if you sign in with another provider. See our Privacy Policy and Terms.

A second provider on the same verified email joins the account you already have.

API entry from apis.yml

apis.yml Raw ↑
name: Machine Library MCP Server
description: Hosted Streamable-HTTP MCP server at https://mcp.machinelibrary.ai (legacy https://mcp.spacefrontiers.org
  still served) exposing four read-only, idempotent retrieval tools (spacefrontiers_search_documents,
  spacefrontiers_search_social, spacefrontiers_fetch_document, spacefrontiers_search_in_document), a hosted
  spacefrontiers_top_up_balance payment tool, a deep_research_agent prompt and a spacefrontiers://document/{uri_b64}
  resource template. OAuth 2.1 with PKCE and RFC 7591 dynamic client registration against https://api.spacefrontiers.org,
  or a Bearer API key. Listed in the official MCP registry as io.github.SpaceFrontiers/mcp; source is
  MIT-licensed on GitHub.
humanURL: https://machinelibrary.ai/mcp
baseURL: https://mcp.machinelibrary.ai
tags:
- MCP
- Agent-Native
- Retrieval
- Research
tags_raw:
- mcp
- agent-native
- retrieval
- research
properties:
- type: MCPServer
  url: mcp/machinelibrary-ai-mcp.yml
- type: ToolCrosswalk
  url: mcp/machinelibrary-ai-tool-crosswalk.yml
- type: Documentation
  url: https://machinelibrary.ai/mcp
- type: GettingStarted
  url: https://machinelibrary.ai/install.md
- type: SourceCode
  url: https://github.com/SpaceFrontiers/mcp
- type: MCPRegistry
  url: https://registry.modelcontextprotocol.io/v0/servers?search=spacefrontiers