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x402engine.app has 108 x402 endpoints in our catalog. Right now: 77 proceed, 31 caution. 77 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 |
|---|---|---|---|---|---|
| /api/code/run | A | Proceed | 100% | 491 ms | Yes |
| /api/crypto/history | A | Proceed | 99% | 479 ms | Yes |
| /api/crypto/markets | A | Proceed | 99% | 456 ms | Yes |
| /api/crypto/price | A | Proceed | 100% | 461 ms | Yes |
| /api/crypto/trending | A | Proceed | 100% | 464 ms | Yes |
| /api/embeddings | A | Proceed | 100% | 481 ms | Yes |
| /api/ens/resolve | A | Proceed | 100% | 462 ms | Yes |
| /api/ens/reverse | A | Proceed | 99% | 463 ms | Yes |
| /api/image/fast | A | Proceed | 100% | 453 ms | Yes |
| /api/image/quality | A | Proceed | 100% | 447 ms | Yes |
| /api/llm/aion-3.0 | A | Proceed | 99% | 425 ms | Yes |
| /api/llm/aion-3.0-mini | A | Proceed | 99% | 426 ms | Yes |
| /api/llm/claude-haiku-5.5 | A | Proceed | 99% | 420 ms | Yes |
| /api/llm/claude-sonnet-5 | A | Proceed | 100% | 319 ms | Yes |
| /api/llm/claude-sonnet-5.5 | A | Proceed | 100% | 343 ms | Yes |
| /api/llm/command-a | A | Proceed | 99% | 311 ms | Yes |
| /api/llm/deepseek | A | Proceed | 100% | 298 ms | Yes |
| /api/llm/deepseek-r1 | A | Proceed | 100% | 288 ms | Yes |
| /api/llm/deepseek-v4-pro | A | Proceed | 100% | 300 ms | Yes |
| /api/llm/devstral | A | Proceed | 99% | 292 ms | Yes |
| /api/llm/gemini-3-flash | A | Proceed | 99% | 288 ms | Yes |
| /api/llm/gemini-3.1-flash-lite | A | Proceed | 99% | 295 ms | Yes |
| /api/llm/gemini-3.5-flash-lite | A | Proceed | 99% | 284 ms | Yes |
| /api/llm/gemini-3.6-flash | A | Proceed | 99% | 286 ms | Yes |
| /api/llm/gemini-flash | A | Proceed | 99% | 285 ms | Yes |
| /api/llm/gemini-pro | A | Proceed | 99% | 285 ms | Yes |
| /api/llm/glm | A | Proceed | 100% | 284 ms | Yes |
| /api/llm/glm-5.3 | A | Proceed | 99% | 288 ms | Yes |
| /api/llm/glm-5.3-flash | A | Proceed | 99% | 281 ms | Yes |
| /api/llm/gpt-4o-mini | A | Proceed | 99% | 293 ms | Yes |
| /api/llm/gpt-5-nano | A | Proceed | 99% | 280 ms | Yes |
| /api/llm/gpt-5.1 | A | Proceed | 99% | 290 ms | Yes |
| /api/llm/gpt-5.2-codex | A | Proceed | 100% | 273 ms | Yes |
| /api/llm/gpt-5.3-codex | A | Proceed | 99% | 286 ms | Yes |
| /api/llm/gpt-5.6-luna | A | Proceed | 99% | 300 ms | Yes |
| /api/llm/gpt-5.6-luna-pro | A | Proceed | 100% | 297 ms | Yes |
| /api/llm/gpt-6-luna | A | Proceed | 100% | 295 ms | Yes |
| /api/llm/grok | A | Proceed | 100% | 294 ms | Yes |
| /api/llm/grok-4.7 | A | Proceed | 99% | 289 ms | Yes |
| /api/llm/inkling | A | Proceed | 99% | 283 ms | Yes |
| /api/llm/kimi | A | Proceed | 99% | 287 ms | Yes |
| /api/llm/llama | A | Proceed | 99% | 296 ms | Yes |
| /api/llm/llama-4-maverick | A | Proceed | 99% | 282 ms | Yes |
| /api/llm/longcat-2 | A | Proceed | 100% | 297 ms | Yes |
| /api/llm/mimo-v2.6-pro | A | Proceed | 99% | 276 ms | Yes |
| /api/llm/minimax | A | Proceed | 99% | 305 ms | Yes |
| /api/llm/minimax-m2.7 | A | Proceed | 99% | 304 ms | Yes |
| /api/llm/minimax-m3 | A | Proceed | 99% | 286 ms | Yes |
| /api/llm/mistral | A | Proceed | 99% | 293 ms | Yes |
| /api/llm/mistral-large-4 | A | Proceed | 100% | 280 ms | Yes |
77 of x402engine.app'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.