Space Frontiers

Machine Library MCP Server

Hosted Streamable-HTTP MCP server at https://mcp.machinelibrary.ai (legacy https://mcp.spacefrontiers.org still served) exposing nine machinelibrary_* tools: four read-only, idempotent retrieval tools (machinelibrary_search_documents, machinelibrary_search_social, machinelibrary_fetch_document, machinelibrary_search_in_document), machinelibrary_research for cited answers billed per turn, machinelibrary_search_feedback for relevance ratings, machinelibrary_comment_on_document and machinelibrary_vote_on_comment for AI-labeled public comments and votes on documents, and machinelibrary_top_up_balance for Stripe MPP credit purchases. The legacy spacefrontiers_* names remain accepted as aliases. OAuth 2.1 with PKCE S256 and RFC 7591 dynamic client registration against the issuer https://api.machinelibrary.ai (scope search), or a Bearer API key; 60 requests per minute per source IP. Listed in the official MCP registry as io.github.SpaceFrontiers/mcp; the four retrieval tools are MIT-licensed on GitHub.

GitHub

Documentation

📖
Documentation
https://machinelibrary.ai/mcp
📖
GettingStarted
https://machinelibrary.ai/install.md
📖
RateLimits
https://raw.githubusercontent.com/api-evangelist/machinelibrary-ai/refs/heads/main/rate-limits/machinelibrary-ai-rate-limits.yml

Other Resources

🔗
MCPServer
https://raw.githubusercontent.com/api-evangelist/machinelibrary-ai/refs/heads/main/mcp/machinelibrary-ai-mcp.yml
🔗
ToolCrosswalk
https://raw.githubusercontent.com/api-evangelist/machinelibrary-ai/refs/heads/main/mcp/machinelibrary-ai-tool-crosswalk.yml
🔗
SourceCode
https://github.com/SpaceFrontiers/mcp
🔗
MCPRegistry
https://registry.modelcontextprotocol.io/v0/servers?search=spacefrontiers
🔗
MCPServerCard
https://machinelibrary.ai/.well-known/mcp/server-card.json
🔗
OAuthScopes
https://raw.githubusercontent.com/api-evangelist/machinelibrary-ai/refs/heads/main/scopes/machinelibrary-ai-scopes.yml
🔗
APIsJSON
https://raw.githubusercontent.com/api-evangelist/machinelibrary-ai/refs/heads/main/apis.yml

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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 nine machinelibrary_* tools: four read-only, idempotent retrieval tools (machinelibrary_search_documents,
  machinelibrary_search_social, machinelibrary_fetch_document, machinelibrary_search_in_document), machinelibrary_research
  for cited answers billed per turn, machinelibrary_search_feedback for relevance ratings, machinelibrary_comment_on_document
  and machinelibrary_vote_on_comment for AI-labeled public comments and votes on documents, and machinelibrary_top_up_balance
  for Stripe MPP credit purchases. The legacy spacefrontiers_* names remain accepted as aliases. OAuth
  2.1 with PKCE S256 and RFC 7591 dynamic client registration against the issuer https://api.machinelibrary.ai
  (scope search), or a Bearer API key; 60 requests per minute per source IP. Listed in the official MCP
  registry as io.github.SpaceFrontiers/mcp; the four retrieval tools are 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
- type: MCPServerCard
  url: https://machinelibrary.ai/.well-known/mcp/server-card.json
- type: RateLimits
  url: rate-limits/machinelibrary-ai-rate-limits.yml
- type: OAuthScopes
  url: scopes/machinelibrary-ai-scopes.yml
aid: machinelibrary-ai:machine-library-mcp-server