# Human Verify

Human Verify — Resolve uncertain or questionable machine outputs with independent human judgment. Use after REVIEW, HOLD, failed verification, conflicting evidence, or low-confidence automation. Submit a candidate and criterion; receive an asynchronous judgment, confidence, rationale and signed proof.

POST https://api-production-34228.up.railway.app/api/v1/public/human-verify
GET the same URL for the complete contract and current availability.
Example quote: 49 cents USD; the actual x402 requirement is authoritative.
Availability: available. Eligible fulfillment capacity is rechecked before payment acceptance. Availability is not a capacity reservation.
Use a standard x402 client: submit the task and retry with PAYMENT-SIGNATURE. Preserve the original payment payload for retries. The optional standard payment-identifier extension groups retries for the same verified wallet and task. Idempotency-Key is optional (16–128 private random characters); if supplied, preserve it and the body on retries. Never publish payment authorizations or private result URLs.
202 returns a private status_url/result_url. Poll every 5 seconds for the judgment and signed proof. No internal purchasing endpoints or ME account are needed.
Outcomes: APPROVE, REJECT, UNSURE (insufficient evidence); no edited-output/MODIFY operation.
Empirical estimate; the result reports whether the requested target was met. No guaranteed truth.
Non-sensitive data only. No medical/legal/financial advice, personal data, regulated approvals or training rights.
Insufficient representative observations for a general completion-time prediction. The default deadline is 300 seconds, configurable up to 3600; it is not guaranteed.

Example request:
```json
{
  "objective": "Check whether the summary accurately reflects the supplied source.",
  "candidate": "The library opens at 9 AM on Tuesday.",
  "criterion": "Approve only if both day and opening time match the source.",
  "context": "Tuesday opening hours: 09:00\u201317:00."
}
```

Other ME capabilities: GET /api/v1/public/capabilities. Existing generic quote/purchase APIs remain documented in the public OpenAPI.