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chemistry-calc.x402tookit.com has 11 x402 endpoints in our catalog. Right now: 11 caution. Best grade: C.
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 |
|---|---|---|---|---|---|
| /bond-polarity | C | Caution | 92% | 515 ms | – |
| /dilution | C | Caution | 94% | 503 ms | – |
| /element-lookup | C | Caution | 94% | 474 ms | – |
| /empirical-formula | C | Caution | 94% | 495 ms | – |
| /half-life | C | Caution | 94% | 527 ms | – |
| /ideal-gas | C | Caution | 94% | 498 ms | – |
| /limiting-reagent | C | Caution | 94% | 475 ms | – |
| /molar-mass | C | Caution | 94% | 509 ms | – |
| /molarity | C | Caution | 93% | 464 ms | – |
| /mole-convert | C | Caution | 94% | 473 ms | – |
| /ph-calc | C | Caution | 94% | 471 ms | – |
chemistry-calc.x402tookit.com's endpoints work in monitoring, but delivery isn't confirmed by a paid test yet, so they're rated Caution. Set a low spend limit, or have your agent call check_payment with the exact quote first.
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.