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data.spencermcw.com has 19 x402 endpoints in our catalog. Right now: 6 proceed, 13 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 |
|---|---|---|---|---|---|
| /v1/drug/nadac | A | Proceed | 100% | 479 ms | Yes |
| /v1/drug/nadac/search | A | Proceed | 100% | 477 ms | Yes |
| /v1/medicare/pfs/rate | A | Proceed | 100% | 389 ms | Yes |
| /v1/tax/sales-rate | A | Proceed | 100% | 390 ms | Yes |
| /v1/medicare/partd/plan | B | Proceed | 100% | 430 ms | Yes |
| /v1/sanctions/address | B | Proceed | 100% | 389 ms | Yes |
| /v1/drug/nadac/changes | C | Caution | 100% | 488 ms | – |
| /v1/hospital/changes | C | Caution | 100% | 470 ms | – |
| /v1/hospital/compare | C | Caution | 100% | 454 ms | – |
| /v1/hospital/payers | C | Caution | 100% | 478 ms | – |
| /v1/hospital/prices | C | Caution | 100% | 450 ms | – |
| /v1/medicare/partd/changes | C | Caution | 100% | 448 ms | – |
| /v1/medicare/partd/coverage | C | Caution | 100% | 432 ms | – |
| /v1/medicare/pfs/changes | C | Caution | 100% | 429 ms | – |
| /v1/medicare/pfs/localities | C | Caution | 100% | 412 ms | – |
| /v1/sanctions/address/batch | C | Caution | 100% | 393 ms | – |
| /v1/sanctions/changes | C | Caution | 100% | 382 ms | – |
| /v1/tax/changes | C | Caution | 100% | 389 ms | – |
| /v1/tax/sales-rate/batch | C | Caution | 100% | 399 ms | – |
6 of data.spencermcw.com'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.