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hello-world-x402.vercel.app x402 API: grades and paid tests

hello-world-x402.vercel.app has 6 x402 endpoints in our catalog. Right now: 1 proceed, 5 caution. 1 passed a real paid test: we paid the listed price and got what the listing promised. Best grade: A.

Every endpoint on hello-world-x402.vercel.app

Best grades first. Open an endpoint for its full history: uptime, price and payout-wallet changes, and paid-test results with signed receipts.

EndpointGradeVerdictUptime (7 days)Response timePaid test passed
/greetA Proceed100% 390 msYes
/helloC Caution100% 382 ms–
/test1C Caution100% 367 ms–
/test2C Caution100% 192 ms–
/test3C Caution100% 235 ms–
/worldC Caution100% 394 ms–

About hello-world-x402.vercel.app

Is hello-world-x402.vercel.app safe to pay?

1 of hello-world-x402.vercel.app's endpoints is rated Proceed: reliable in monitoring with a stable price and payout wallet, and the best ones delivered in a real paid test. Grades are per endpoint, so look up the one your agent is about to pay.

How are these grades made?

Lumière PayCheck checks every endpoint about every 30 minutes: does it answer with a valid x402 quote, is the price and payout wallet stable. Then we pay some of them for real and check the response against what the listing promised. Failures are re-tested before they count. How it works.

Can my agent check hello-world-x402.vercel.app before paying?

Yes, for free. Call check_payment (API or MCP) with the endpoint, amount and payTo from the 402 quote, and pay only if it returns allow. Check an endpoint now.

Do you run hello-world-x402.vercel.app? Prove your endpoints work: get tested, check your setup, or add endpoints we're missing. Every seller's results are public, here and in the full catalog.