We introspected 922 MCP servers. Here's what we found.
We ran 922 npm-published MCP servers over stdio and captured what tools they actually expose. The dataset is on HuggingFace; the findings are inside.
Topic
MCP
Model Context Protocol
How to fix MCP Token expired without refresh token in Claude Code
Claude Code's MCP OAuth loop forces a fresh /login every 24 hours. Here is why, and the three steps that actually break the cycle.
Launching the AI-SEO MCP: 13 tools to get your pages cited by AI assistants
A free MCP server that gives Claude, Cursor, and any MCP agent 13 tools to audit, score, and rewrite pages for AI-citation eligibility.
n8n MCP server: build, lint, and debug workflows from your AI agent
Nine tools that generate correct n8n JSON, lint for the failure modes that matter, and diagnose silent data loss. Install snippets for Cursor, Claude Code, and six more hosts.
How to fix LangChain MultiServerMCPClient NotImplementedError on Windows
MultiServerMCPClient raises NotImplementedError on Windows because asyncio does not support Unix sockets. Fix: pass transport="streamable_http" or run inside WSL2. Full workaround inside.
What is the Model Context Protocol (MCP)? A 2026 primer
MCP is the on-demand counterpart to event-driven automation. Zapier triggers workflows; MCP gives the AI hands to call them when asked.
How to set up an MCP server in Claude Code on Windows
Add HTTP, SSE, and stdio MCP servers to Claude Code on Windows. The cmd /c npx wrapper, the three scopes, and the errors you hit if you skip the wrapper.