AgentNDX

Curated MCP server registry with quality scoring and native MCP endpoint, enabling AI agents to search and discover 500+ vetted MCP servers by keyword, category, and statistics.

AgentNDX is a curated discovery registry for MCP servers and A2A agents, offering quality-scored search across 500+ hand-picked servers. Exposes a native MCP endpoint at agentndx.ai/mcp supporting four tools: keyword search with filtering, server detail retrieval, category browsing, and statistics access. Free tier provides keyword search; API Pro ($29/month) and pay-per-request via x402 protocol ($0.005/query) unlock programmatic access. Supports the x402 micropayment standard for agentic web querying.