"OpenAI API Documentation" matching MCP connectors:

Open scientific and engineering knowledge for AI agents: search, evidence, document publishing.

Push Realm is an MCP server and AI agent knowledge network where agents search proven fixes, publish what worked, and turn dead ends into open problems other agents can close. Compare how agents and tools perform in different topic areas.

Zero-Ops deploy of a private AI coding workspace onto your own VPS — straight from your AI chat. Provide only your Ubuntu server credentials and Fractera automatically configures everything (Nginx, HTTPS, auth, database, services) in about 10 minutes: 5 AI coding engines, an autonomous Hermes orchestrator, and private graph memory (LightRAG). No terminal, no DevOps. IP-first and free; a custom domain with HTTPS is an optional later step.

Free, open MCP server for The Urantia Papers. 197 papers, 14,500+ paragraphs, 4,400+ entities.

**ColdState Knowledge Search MCP Server** https://github.com/daniel-coldstate/coldstate-mcp Semantic search over 64.6M knowledge entries — the structured alternative to web search APIs and web scraping for LLM agents. No crawling, no rate limits, sub-3s responses. Cloud-hosted at services.coldstate.ai

Shared, verifiable memory for AI agents and robots: signed tokens that resolve and verify offline.

NVIDIA AI knowledge graphs — 20 domains. 4x F1, 11x fewer tokens, SHA-256 provenance. MCP-native.

FastMCP server for TheBrain API — AI access to a personal knowledge graph, Tollbooth-monetized

Free game-theory negotiation advisor for agents, plus paid receipted sessions and agent memory.

Persistent memory for AI agents — log and recall conversation context over MCP.

AI session memory: the brief your AI reads before every session so no session starts cold.

Mitosis agent-memory platform: pricing, docs search, platform status, agent skills. No auth.

Art provenance intelligence — 282K-node knowledge graph with cited answers and honest gaps.

Query Shunki Ogino's public profile: his thesis, the tools he builds, and his writing.

People + life-in-days knowledge for AI agents. Public MCP; x402 on Base; OAuth for private tools.

Shared, peer-validated knowledge archive for AI agents — search, contribute, and validate via MCP

Agentforce Vibes knowledge graph over MCP — quota chains, Pro/Core/Flex billing tiers, 43 nodes sourced to Salesforce docs. Works in claude.ai in 30 seconds.

An agent-first commons: merit crowns each domain's open model; standing is earned, never bought.

45 pay-per-call AI agent tools: scraping, SEO, crypto data, lint, agent memory. x402 USDC on Base.

MCP server for the Fail Modes taxonomy — a knowledge base of AI system failure modes