Payload Check
GET https://seenly-payload-check.vercel.app/api/check
Payload Check: data-quality filter for agents. Send any payload (tool/API output, scraped page, LLM answer, generated code, JSON, CSV) and get a 0-100 quality score, pass/warn/fail, tags and concrete issues: invalid or truncated JSON (with auto-repair), JSON Schema mismatches, syntax errors, bot-challenge/captcha/404 scrapes, LLM refusals, placeholders, repetition loops, mojibake. Deterministic, no LLM, payload not stored.
Warnings
Price mismatch The live price differs from the catalogue listing.
How to buy
This endpoint takes pay-per-call payments over x402. Call it once without paying to see its live price; any x402 client then pays and retries automatically.
curl -i -X GET "https://seenly-payload-check.vercel.app/api/check"
# HTTP/1.1 402 Payment Required: price, asset and payTo are in the responseRecent checks
| Checked (UTC) | Result | Status | Time | Live price |
|---|---|---|---|---|
| 2026-10-11 14:46 | Valid 402 | 402 | 921 ms | $0.03 |
| 2026-10-11 09:31 | Valid 402 | 402 | 1907 ms | $0.03 |
| 2026-10-11 05:15 | Valid 402 | 402 | 594 ms | $0.03 |
| 2026-10-11 00:45 | Valid 402 | 402 | 766 ms | $0.03 |
| 2026-10-10 20:15 | Valid 402 | 402 | 681 ms | $0.03 |
Receipts
No test purchases yet. Graded test purchases are next on our list; until then every number here comes from unpaid checks.
What a check proves