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onchaincheck.dev x402 API: grades and paid tests

onchaincheck.dev has 95 x402 endpoints in our catalog. Right now: 66 proceed, 29 caution. 66 passed a real paid test: we paid the listed price and got what the listing promised. Best grade: A.

Every endpoint on onchaincheck.dev

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
/polygon/balancesA Proceed100% 200 msYes
/polygon/contractA Proceed100% 203 msYes
/polygon/new-poolsA Proceed100% 250 msYes
/polygon/nftA Proceed100% 235 msYes
/polygon/tokenA Proceed99% 210 msYes
/polygon/txA Proceed100% 227 msYes
/polygon/wallet-profileA Proceed100% 223 msYes
/solana/tokenA Proceed100% 206 msYes
/solana/walletA Proceed100% 209 msYes
/taxA Proceed99% 197 msYes
/tokenA Proceed99% 209 msYes
/verdictA Proceed99% 298 msYes
/watchlistA Proceed99% 183 msYes
/x402/pingA Proceed100% 191 msYes
/eth/allowanceA Proceed98% 232 msYes
/polygon/gasA Proceed98% 193 msYes
/ai/chatC Caution99% 222 ms–
/ai/chat-proC Caution99% 231 ms–
/ai/embeddingsC Caution100% 210 ms–
/ai/imageC Caution99% 203 ms–
/ai/transcribeC Caution100% 221 ms–
/ai/translateC Caution100% 226 ms–
/ai/ttsC Caution100% 215 ms–
/company/enrichC Caution100% 240 ms–
/company/hiring-trendC Caution100% 201 ms–
/company/profileC Caution99% 218 ms–
/crypto/priceC Caution100% 215 ms–
/deployer/linksC Caution98% 212 ms–
/doc/markdownC Caution99% 191 ms–
/domain/lookupC Caution100% 231 ms–
/economy/indicatorsC Caution99% 202 ms–
/jobs/newC Caution100% 191 ms–
/jobs/salaryC Caution100% 206 ms–
/jobs/searchC Caution100% 192 ms–
/markets/predictionC Caution100% 211 ms–
/polygon/tradesC Caution100% 223 ms–
/sec/companyC Caution100% 349 ms–
/watchC Caution100% 295 ms–
/weatherC Caution100% 312 ms–
/web/auditC Caution100% 216 ms–
/web/extractC Caution98% 241 ms–
/x402/marketC Caution100% 208 ms–
/x402/sellerC Caution100% 222 ms–
/x402/sellersC Caution100% 220 ms–
/deployerD Caution100% 238 ms–

About onchaincheck.dev

Is onchaincheck.dev safe to pay?

66 of onchaincheck.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.

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 onchaincheck.dev 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 onchaincheck.dev? 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.