AgentNDX / API Pro

Build with the full AgentNDX index.

Search, analyze, and monitor 15,000+ MCP servers and A2A agents from your code. No crypto wallets, no per-request friction — one API key, full access.

What's included — $29/month

✓ Full-text search across 15,000+ servers (/api/pro/search)
✓ Deep server analysis — duplicates, peers, compatibility (/api/pro/analyze/:id)
✓ Ecosystem trends and x402 adoption stats (/api/pro/trending)
✓ Simple X-Api-Key header auth — works in any language or agent
✓ Cancel any time — no contracts

Quick start

curl https://agentndx-production.up.railway.app/api/pro/search \
  -H "X-Api-Key: andx_your_key_here" \
  -G --data-urlencode "q=postgres"

Your API key is generated instantly after payment and shown once. Keep it somewhere safe.

Get your API key

Questions

How is this different from the free API?

The free /api/services endpoint is rate-limited to 100 requests/hour. Pro endpoints have no per-request friction and are optimized for programmatic use.

What about x402 endpoints?

x402 is pay-per-request via USDC on Base. API Pro is a flat monthly subscription — better for consistent usage and environments that can't use crypto payments.

When do I get my key?

Immediately after payment. Your key is shown on the confirmation page. Save it — it's only displayed once.