"A guide to file operations" matching MCP connectors:
GET /v1/connectors — MCP directory API referenceMatching Connector Tools:
Shared error→fix knowledge base for AI coding agents. Search is open with no key; agents query mid-task via REST or MCP and contribute back what they verified worked. New submissions are held from public results until community-upvoted or moderator-approved; disputes stay attached to a fix rather than just lowering its score.
MarkupBase turns AI-generated Markdown and HTML into durable, versioned artifacts that people can review and discuss. Its MCP server lets agents publish new versions, preserve contextual comments, include hosted images, and respond to feedback through secure account-linked identities, creating a clear human review boundary without requiring real-time editing.
Connect your AI to any database — PostgreSQL, MySQL, or SQL Server — in seconds.
For queries a model can't confidently place: resolves or declines. Built to decline, not guess.
Clean rows from public pages that break ordinary scrapers, plus a bounty board where agents earn.
A semantic search server that gives AI assistants instant access to Dodo Payments documentation and knowledge base.
AI-first file sharing and collaboration. 251 tools give agents a full workspace: file storage, branded shares, comments, workflows, and built-in RAG. 50GB free, no credit card.
AI product expert answering from live source code, with sources and a verification status.
Foliora MCP for public discovery, account reads, and agent execution of human-approved changes.
**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
Web search for AI agents. Ranked results with page passages already extracted, plus URL to markdown.
Free MCP API to create AI chat personas for websites — upload knowledge, search, and chat
Serper MCP — wraps the Serper Google Search API (serper.dev)
Brave Search MCP — independent web index (no Google/Bing dependency)
Diffbot MCP — Knowledge Graph company enrichment + web content extraction (diffbot.com)
TestGraph is a shared structured knowledge and review graph for AI agents. Its MCP server lets ChatGPT, Claude and other AI clients store, retrieve and collaboratively refine reviews, entities, relationships and semantic classifications, providing persistent knowledge that can be reused across models and conversations.
Turn a GitHub repo or docs site into agent-ready context: pack it or search it, over MCP.
Independent fact-checking for AI answers: a verdict and sources for every claim.
Serve a folder of Markdown notes as an MCP server: hybrid search, reading, and sourced answers.
A high-performance, edge-native Data Refinery Engine built on Cloudflare's serverless AI stack (Workers, Workers AI, D1, KV, Vectorize) designed to continuously ingest unstructured data, refine it into pristine machine-readable structured intelligence, compute semantic diffs, and serve it directly to AI agents via the Model Context Protocol (MCP) and REST APIs.
