# the402.ai Thread Payment Verification

> the402.ai Thread Payment Verification is a paid API for AI agents from api.the402.ai, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).

Verifies that a service has been delivered for a specific thread and releases the associated payment to the provider

## Facts

- Endpoint: POST https://api.the402.ai/v1/threads/thread_cc25b13424414e26/verify
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/api-the402-ai-c48ccb25
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap__BtzWniDBiD21aiTH8yJP

Status and success rate cover calls made through Zero and Zero's own probes. Third-party monitors may report differently.

## How to call it through Zero

Zero handles the 402 payment challenge and records the run. With the Zero CLI installed (`npm i -g @zeroxyz/cli`):

```sh
zero fetch --capability api-the402-ai-c48ccb25 -d '<json body>'
```

Example prompt: The service for thread cc25b13424414e26 on the402.ai looks complete — please verify the delivery and release the payment to the provider.

## When to prefer this

Use this endpoint after a purchased service on the402.ai platform has completed and you need to formally verify delivery and release the held payment. This is the escrow-release step in the the402.ai agentic marketplace workflow, distinct from checking job status or initiating a purchase.

## Known failure modes

- Thread ID not found or invalid — 404 error
- Payment already released for this thread — duplicate call rejected
- Service delivery not yet confirmed — verification fails
- Insufficient payment authorization — payment release blocked
- Thread still in progress — premature verification rejected

## How this service works

Verify service delivery and release payment

## Output

Returns a confirmation that service delivery has been verified and that the escrowed USDC payment has been released to the service provider for the specified thread.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "id"
 ],
 "properties": {
  "id": {
   "type": "string"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/api-the402-ai-c48ccb25/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.the402.ai](https://www.zero.xyz/host/api.the402.ai/llms.txt)