# Second Opinion Quick Async (Reasoning-Only Claim Check)

> Second Opinion Quick Async (Reasoning-Only Claim Check) is a paid API for AI agents from secondopinionx402.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-16).

Submits a claim for an asynchronous reasoning-only logical verification check, returning a job ID to be polled for results — optimized for Solana x402 payments.

## Facts

- Endpoint: POST https://secondopinionx402.com/v1/verify/quick/async
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-16
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/second-opinion-quick-async-reasoning-only-claim-check-a667a88e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hCOzB1_bTg8BX4QR3OOmY

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 second-opinion-quick-async-reasoning-only-claim-check-a667a88e -d '<json body>'
```

Example prompt: Can you submit this claim for an async logic check — 'Remote work increases long-term employee productivity more than in-office work' — and poll for the reasoning-only verification result?

## When to prefer this

Choose this async endpoint over the synchronous quick check when using Solana-based x402 payments, when you need non-blocking operation to avoid holding a connection open, or when your workflow can tolerate polling for results. Prefer this over the panel or adversarial endpoints when you need only fast logical reasoning analysis without multi-perspective critique or live web research.

## Known failure modes

- Missing or malformed 'input' body causes 400 validation error
- Incorrect bodyType enum value (must be 'json', 'form-data', or 'text') causes rejection
- Payment failure or insufficient USDC balance prevents job creation
- Job ID not found when polling if too soon or expired
- Network timeout during job submission returns no job ID

## How this service works

Second Opinion quick (async): reasoning-only check as a polled job. Required for Solana payments.

## Output

Returns a job ID and polling endpoint so the agent can check back later for the reasoning-only verification verdict, which includes an analysis of the logical soundness of the submitted claim without conducting live web research.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "bodyType",
    "body",
    "method"
   ],
   "properties": {
    "body": {
     "properties": {}
    },
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "POST"
     ],
     "type": "string"
    },
    "bodyType": {
     "enum": [
      "json",
      "form-data",
      "text"
     ],
     "type": "string"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/second-opinion-quick-async-reasoning-only-claim-check-a667a88e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from secondopinionx402.com](https://www.zero.xyz/host/secondopinionx402.com/llms.txt)