"An introduction to GraphQL" matching MCP connectors:
Matching Connector Tools:
For queries a model can't confidently place: resolves or declines. Built to decline, not guess.
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
Create your digital twin: a public page that answers from your own material, with citations.
LLM-ready web search + instant answers + URL-to-clean-text fetch for agents and RAG.
Document-to-Markdown MCP server — convert PDF, Office and HTML into LLM-ready Markdown.
Serve a folder of Markdown notes as an MCP server: hybrid search, reading, and sourced answers.
NVIDIA AI knowledge graphs — 20 domains. 4x F1, 11x fewer tokens, SHA-256 provenance. MCP-native.
Build and run grounded business agents over MCP: agents, knowledge bases, skills, Storylines.
Extract PDFs to Markdown, RAG chunks and cited tables; publish tracked Doc Links with read stats.
Parse PDF/Word/PPT/HTML to Markdown; tables as JSON, image extraction, RAG chunking, page ranges.
Hosted persistent memory with semantic search, importance and TTL for AI agents.
Generate 18 AI readiness files (llms.txt, ai.txt, RAG indexes, schema) for any website.
Governed data discovery, exact queries, decisions, simulations, and runtime utilities over MCP.
Diffbot MCP — Knowledge Graph company enrichment + web content extraction (diffbot.com)
A multi-domain reference corpus where every answer drills down to its cited, verified source.
Brave Search MCP — independent web index (no Google/Bing dependency)