MCP Discovery API – Let AI agents find the right tools automatically

yksanjo · 2026-01-17T19:25:06 1768677906

  Hi HN,

  I built MCP Discovery API, an agent-native discovery layer for Model Context Protocol servers.

  The problem: AI agents can only use tools you pre-configure. They can't discover new capabilities dynamically.

  The solution: A semantic search API that returns the best MCP server for any task.

  Example:
  Query: "I need to send emails with templates"
  Response: Gmail MCP server (87% confidence) + install: npx -y @anthropic/mcp-server-gmail

  Features:
  - Semantic search using OpenAI embeddings + pgvector
  - Real-time performance metrics (latency, uptime)
  - Side-by-side server comparison
  - 24 servers indexed, 91 capabilities tagged

  Tech: TypeScript, Supabase, Railway, MCP SDK

  Live: https://mcp-discovery-production.up.railway.app
  GitHub: https://github.com/yksanjo/mcp-discovery

  Feedback welcome!