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blockchain-api.x402-chain-tools.workers.dev has 9 x402 endpoints in our catalog. Right now: 6 proceed, 3 caution. 6 passed a real paid test: we paid the listed price and got what the listing promised. Best grade: A.
Best grades first. Open an endpoint for its full history: uptime, price and payout-wallet changes, and paid-test results with signed receipts.
| Endpoint | Grade | Verdict | Uptime (7 days) | Response time | Paid test passed |
|---|---|---|---|---|---|
| /chain/balance | A | Proceed | 100% | 535 ms | Yes |
| /chain/block | A | Proceed | 100% | 517 ms | Yes |
| /chain/receipt | A | Proceed | 100% | 503 ms | Yes |
| /chain/transaction-lookup | A | Proceed | 100% | 504 ms | Yes |
| /chain/transaction-receipt-status | A | Proceed | 100% | 483 ms | Yes |
| /chain/tx | A | Proceed | 100% | 482 ms | Yes |
| /chain/allowance | C | Caution | 94% | 556 ms | – |
| /chain/token-balance | C | Caution | 100% | 492 ms | – |
| /chain/wallet-preflight | C | Caution | 99% | 487 ms | – |
6 of blockchain-api.x402-chain-tools.workers.dev's endpoints are 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.
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.
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.