x402 Endpoint Search

GadgetHumans Agent API Hub

216 MCP tools and 209 priced REST routes for AI agents. Pay per call in USDC on Base with x402 — no signup, no API key, free tier on every door.

Endpoint: https://api.gadgethumans.com/mcp (streamable HTTP) Package: gadgethumans-mcp

Free: cross-bazaar x402 discovery

One call searches both live x402 bazaars plus this catalogue, ranked by measured 30-day call volume:

curl "https://api.gadgethumans.com/discovery/search?q=whois&limit=10"

{"jsonrpc":"2.0","id":1,"method":"tools/call", "params":{"name":"x402_search","arguments":{"q":"whois","limit":10}}}

Merges facilitator.payai.network (14,841 listings), api.cdp.coinbase.com (73,178 listings) and this catalogue (209 routes), deduped by resource URL. Returns resource, sources, price_usd, calls_30d, payTo and description per row. $0.000, no key, cached 900s, 120 queries/hour/IP.

Use it to compare providers and prices before paying any x402 endpoint.

Connect

npx -y gadgethumans-mcp

{ "mcpServers": { "gadgethumans": { "command": "npx", "args": ["-y", "gadgethumans-mcp"] } } }

What you can call

• Token safety — honeypot/transfer simulation, buy and sell tax, mint and owner privileges on Base ($0.01)
• Prediction markets — live Polymarket odds, implied probability, board scans ($0.01 / $0.25)
• Web — search and page reads to markdown
• Network — DNS, WHOIS, IP, geocoding
• Markets — crypto prices, currency conversion
• Utilities — hashing, UUID, timezone, VAT and IBAN validation, regex, cron parsing, distance

tools/list is served live from the endpoint, so new routes appear without a package update.

Pricing

An unpaid call returns HTTP 402 with an x402 accepts[] challenge (also in the Payment-Required header). Settle and retry with the X-PAYMENT header.

Links

• Machine-readable surface: https://api.gadgethumans.com/llms.txt
• OpenAPI: https://api.gadgethumans.com/openapi.json
• Discovery index: https://api.gadgethumans.com/discovery
• MCP registry: com.gadgethumans/gadgethumans-mcp

MIT licensed.