"FIRST" matching MCP connectors:

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.

Privacy-first PDF tools over MCP: merge, split, rotate, delete, compress, protect, inspect.

84+ free local-first tools: image, PDF, docs, dev utils. Wasm, zero upload, x402 API.