Payments on Base + Solana
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api.probekit.dev has 14 x402 endpoints in our catalog. Right now: 8 proceed, 6 caution. 8 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 |
|---|---|---|---|---|---|
| /v1/dns/dnssec | A | Proceed | 100% | 786 ms | Yes |
| /v1/mail/bimi | A | Proceed | 100% | 825 ms | Yes |
| /v1/mail/dkim | A | Proceed | 100% | 773 ms | Yes |
| /v1/mail/dmarc | A | Proceed | 100% | 781 ms | Yes |
| /v1/mail/mx | A | Proceed | 100% | 764 ms | Yes |
| /v1/mail/ptr | A | Proceed | 99% | 800 ms | Yes |
| /v1/mail/spf | A | Proceed | 100% | 755 ms | Yes |
| /v1/dns/caa | A | Proceed | 96% | 875 ms | Yes |
| /v1/dns/lookup | C | Caution | 100% | 742 ms | – |
| /v1/domain/health | C | Caution | 99% | 777 ms | – |
| /v1/mail/check | C | Caution | 100% | 975 ms | – |
| /v1/mail/check/bulk | C | Caution | 99% | 772 ms | – |
| /v1/mail/dkim-discover | C | Caution | 99% | 792 ms | – |
| /v1/mail/mta-sts | C | Caution | 99% | 767 ms | – |
8 of api.probekit.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.