Payments on Base + Solana
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market.561.group 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/pacing/heart-rate-threshold | A | Proceed | 100% | 778 ms | Yes |
| /v1/translate/en-zh/cdrama-subtitles | A | Proceed | 100% | 600 ms | Yes |
| /v1/structural-claims/option-value | A | Proceed | 99% | 1,325 ms | Yes |
| /v1/translate/zh-en/cdrama-subtitles | A | Proceed | 100% | 1,253 ms | Yes |
| /v1/translate/zh-en | A | Proceed | 99% | 1,499 ms | Yes |
| /v1/base-chain/balance | A | Proceed | 100% | 1,799 ms | Yes |
| /v1/base-chain/gas-oracle | A | Proceed | 100% | 1,668 ms | Yes |
| /v1/book-record | A | Proceed | 100% | 1,690 ms | Yes |
| /v1/astronomy/positions/2026-07-21T00:00:00Z | C | Caution | 100% | 1,818 ms | – |
| /v1/ephemeris/moment/2026-07-21T00:00:00Z | C | Caution | 99% | 1,741 ms | – |
| /v1/market-action/admission | C | Caution | 99% | 1,735 ms | – |
| /v1/orphan-patch/score | C | Caution | 99% | 1,669 ms | – |
| /v1/pacing/analysis | C | Caution | 100% | 1,562 ms | – |
| /v1/pre-sign/conformance | C | Caution | 100% | 1,431 ms | – |
8 of market.561.group'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.