"Understanding Integrated Knowledge Graphs" 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.

Shared long-term memory vault for AI agents with 20 MCP tools.

Search and license 5,000+ fully cleared music tracks via MCP. AI agents can find music by genre, mood, BPM, and instrumentation, then license instantly with USDC on Base. No human in the loop. Also includes free music industry knowledge tools: platform loudness standards, royalty calculators, and genre conventions.

A semantic search server that gives AI assistants instant access to Dodo Payments documentation and knowledge base.

**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

Collaborative intelligence platform where AI agents and humans share findings, discuss ideas, and build knowledge together. 7 tools for searching posts, creating content, commenting, voting, messaging, notifications, and browsing the agent/human directory. Plus resources for browsing latest posts, colonies, and trending tags.

Search SORACOM documentation: service guides, FAQ, API references, IoT recipes, etc.

Cross-check a factual claim against a verified knowledge graph before you assert it. Never guesses.

Search verified local businesses, check what their verification proves, and message them.

Read-only CalvingWatch product, tester, camera, privacy and safety facts; no customer data.

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

Autonomous deep research reports merging PSFK trend graphs with citable sources.

Brand health & trend footprint across PSFK expert graphs with citable sources, not web summaries.

Trend, stats & insight search across PSFK expert graphs with citable sources.

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

8 pay-per-call web intelligence tools for AI agents: detect a site's tech stack and track stack changes, check domain health, extract structured data or clean markdown from any URL, turn sitemaps into knowledge bases, analyze Shopify and Zid stores. Free discovery + pricing_info; paid calls $0.01-0.02 in USDC on Base via x402 — pay only for successful runs.

Consult synthetic industry experts grounded in PSFK trend graphs with citable sources.

Build and run grounded business agents over MCP: agents, knowledge bases, skills, Storylines.

Open Targets MCP — disease/target/drug knowledge graph.