Start with one useful paid tool.
Free discovery, real seller prices and examples. No signup required to browse. Use your own approved wallet and spending limit when you choose to buy.
Describe your agent's job and find the right API.
Matching uses actual published endpoints and prices. No account, wallet, purchase, or remote model is required.
Try:
A matched API is not a purchase. You must independently authorize any payment.Perpetual funding rates
Compare live perpetual funding rates across supported providers.
$0.0075 USDC per settled call
curl -i -X POST 'https://bounty-engineer-x402-prod.onrender.com/v1/funding-rates' -H 'Content-Type: application/json' --data '{"symbol":"BTCUSDT","providers":["binance","bybit"]}'See free sample (no purchase) · Buyer-controlled x402 quickstart
Public webpage extraction
Extract text and links from public webpages without login or paywall bypass.
$0.001 USDC per settled call
curl -i -X POST 'https://bounty-engineer-x402-prod.onrender.com/v1/web-extract' -H 'Content-Type: application/json' --data '{"url":"https://example.com/"}'See free sample (no purchase) · Buyer-controlled x402 quickstart
Public website audit
Check a supplied public website URL with a deterministic audit.
$0.01 USDC per settled call
curl -i 'https://bounty-engineer-x402-prod.onrender.com/v1/audit?url=https%3A%2F%2Fexample.com%2F'
Pay only when the task needs it
Call the resource with your x402-compatible client, inspect the HTTP 402 challenge and independently verify the USDC amount, payee and network. Sign only if the buyer authorized it. Free examples are not delivered paid work.
Read the dry-run-first buyer wallet guide · Merchant status · OpenAPI