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Verifi Human Verification Gate
x402
Verifi Human Verification Gate is a paid API for AI agents from verifi.cloud, paid per call via x402, $0.12/call, status unknown (last checked 2026-10-28).
Submits a claim and agent intent to a human review queue for manual verification, returning a human-checked result via polling or callback.
Price / call$0.12
Success—
StatusUnknown
How this service works
Gate 1 of one Verifi chain. Admit one request to the human queue.
Output
A queue admission confirmation indicating the request has been accepted into the human review pipeline. The actual human verification result is retrieved later via polling the endpoint or via a webhook callback to the provided callback_url, and will include the human's verdict on the submitted claim.
Example use cases
Financial figure human spot-check
“Before I send this invoice approval, have a human verify the claim 'The vendor invoice #INV-2041 totals $12,500 and matches the purchase order' — I need this checked because I'm about to release payment.”
AI-generated fact escalation
“I'm not confident in this statistic I pulled — please submit the claim 'Global EV adoption reached 18% of new car sales in 2023' to a human verifier so we can confirm it before publishing the report.”
Agent action safety gate
“Before I delete those 200 user records, send this to a human for approval: the claim is 'These accounts have been inactive for over 3 years and are flagged for purge per data retention policy', and my intent is to confirm I have authorization to proceed.”
Technical details
Endpoint
POSThttps://verifi.cloud/verify?utm_source=zero.xyzWhen to prefer
Use this endpoint when an AI agent needs a human checkpoint before taking a consequential or irreversible action, when a claim needs authoritative human fact-checking rather than automated validation, or when compliance or safety policy requires a human in the loop. Prefer this over automated validation APIs when the stakes are high enough to warrant human judgment, when the claim involves subjective or contextual nuance that algorithms miss, or when an audit trail of human review is required.
Side effects
- Invalid agent_id format (not a valid 0x Ethereum address) returns a validation error
- claim or intent fields missing or empty cause a 400-level rejection
- callback_url not using HTTPS is rejected
- claim exceeds 4000 character limit causing truncation or rejection
- human reviewer unavailable or delayed leads to long queue wait times
- network timeout before queue admission confirmation is received
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| claim | string | The statement a human should verify. |
| intent | string | What the agent wants to do and why it needs a human check. |
| agent_id | string | The requester wallet address. |
| callback_url | string | Optional https URL notified when the result is ready or failed. Polling always works. |
Tags
x402
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