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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/llm/mistral-large-4 | A | Proceed | 100% | 274 ms | Yes |
| /api/llm/muse-spark-1.1 | A | Proceed | 100% | 282 ms | Yes |
| /api/llm/o4-mini | A | Proceed | 100% | 277 ms | Yes |
| /api/llm/perplexity | A | Proceed | 100% | 284 ms | Yes |
| /api/llm/qwen | A | Proceed | 100% | 275 ms | Yes |
| /api/llm/qwen-coder | A | Proceed | 100% | 271 ms | Yes |
| /api/llm/qwen3.5 | A | Proceed | 100% | 274 ms | Yes |
| /api/llm/qwen3.7-max | A | Proceed | 100% | 279 ms | Yes |
| /api/llm/qwen3.7-plus | A | Proceed | 100% | 277 ms | Yes |
| /api/llm/qwen3.8-omni-flash | A | Proceed | 100% | 288 ms | Yes |
| /api/llm/seed | A | Proceed | 100% | 268 ms | Yes |
| /api/search/contents | A | Proceed | 100% | 267 ms | Yes |
| /api/search/web | A | Proceed | 100% | 282 ms | Yes |
| /api/token/metadata | A | Proceed | 99% | 272 ms | Yes |
| /api/token/prices | A | Proceed | 100% | 271 ms | Yes |
| /api/travel/flights | A | Proceed | 100% | 277 ms | Yes |
| /api/travel/hotels | A | Proceed | 99% | 270 ms | Yes |
| /api/tts/elevenlabs | A | Proceed | 100% | 257 ms | Yes |
| /api/tx/simulate | A | Proceed | 100% | 269 ms | Yes |
| /api/web/scrape | A | Proceed | 100% | 263 ms | Yes |
| /api/web/screenshot | A | Proceed | 100% | 255 ms | Yes |
| /api/ipfs/pin | A | Proceed | 98% | 411 ms | Yes |
| /api/llm/gpt-4o | A | Proceed | 98% | 280 ms | Yes |
| /api/llm/gpt-5.2 | A | Proceed | 98% | 275 ms | Yes |
| /api/llm/grok-code | A | Proceed | 98% | 276 ms | Yes |
| /api/llm/hy3 | A | Proceed | 97% | 259 ms | Yes |
| /api/llm/mimo-v2.6-flash | A | Proceed | 98% | 280 ms | Yes |
| /api/image/gpt-image-2.5 | C | Caution | 100% | 417 ms | – |
| /api/image/nano-banana | C | Caution | 100% | 411 ms | – |
| /api/image/text | C | Caution | 100% | 420 ms | – |
| /api/llm/claude-fable-5.1 | C | Caution | 100% | 402 ms | – |
| /api/llm/claude-opus | C | Caution | 100% | 388 ms | – |
| /api/llm/claude-opus-4.5 | C | Caution | 100% | 340 ms | – |
| /api/llm/claude-opus-4.8 | C | Caution | 100% | 340 ms | – |
| /api/llm/claude-opus-5 | C | Caution | 100% | 380 ms | – |
| /api/llm/claude-opus-5.5 | C | Caution | 100% | 371 ms | – |
| /api/llm/claude-sonnet | C | Caution | 99% | 348 ms | – |
| /api/llm/claude-sonnet-4.6 | C | Caution | 100% | 328 ms | – |
| /api/llm/deepseek-v3.2 | C | Caution | 100% | 287 ms | – |
| /api/llm/deepseek-v3.2-speciale | C | Caution | 100% | 287 ms | – |
| /api/llm/gemini-3-pro | C | Caution | 100% | 295 ms | – |
| /api/llm/gemini-3.1-pro | C | Caution | 100% | 284 ms | – |
| /api/llm/gpt-5.2-pro | C | Caution | 99% | 274 ms | – |
| /api/llm/gpt-5.4 | C | Caution | 100% | 291 ms | – |
| /api/llm/gpt-5.6-sol-pro | C | Caution | 100% | 292 ms | – |
| /api/llm/gpt-5.6-terra | C | Caution | 100% | 290 ms | – |
| /api/llm/gpt-5.6-terra-pro | C | Caution | 100% | 290 ms | – |
| /api/llm/gpt-6-astra | C | Caution | 100% | 286 ms | – |
| /api/llm/gpt-6.1-sol | C | Caution | 100% | 291 ms | – |
| /api/llm/kat-coder-pro-v2.5 | C | Caution | 100% | 276 ms | – |
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.