# agentutil.net Claim Verify

> agentutil.net Claim Verify is a paid API for AI agents from agentutil.net, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Verifies factual claims against live data to confirm accuracy before using them in responses, calculations, or decisions.

## Facts

- Endpoint: POST https://agentutil.net/v1/skills/claim-verify
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentutil-net-29cdba1d
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_x7rgzHRYPtqKNFQlpZjkW

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 agentutil-net-29cdba1d -d '<json body>'
```

Example prompt: Before you use that statistic in your answer, can you verify the claim 'global average temperature has risen by 1.2 degrees Celsius since pre-industrial times' against live data to make sure it's accurate?

## When to prefer this

Choose this endpoint when an AI agent needs to confirm the factual accuracy of a specific claim before using it in a response, calculation, or downstream decision — especially when the claim involves current statistics, recent events, or time-sensitive data. It is particularly valuable as a pre-response safety check to reduce hallucinations or citation of outdated information.

## Known failure modes

- Claim is too ambiguous or poorly formed to verify — returns validation error
- Live data sources are unavailable or unreachable — returns service error
- Claim pertains to a domain with insufficient live data coverage — returns low-confidence or unverifiable result
- Payment of $0.001 USDC not provided or rejected — returns 402 Payment Required
- Input schema missing required 'name' field set to 'claim-verify' — returns 400 Bad Request

## How this service works

Verify factual claims against live data before using them in responses, calculations, or decisions.

## Output

The agent receives a structured verification result indicating whether the claim is supported, refuted, or unverified, along with supporting or contradicting evidence drawn from live data and a confidence indication.

## Example request

```json
{
 "name": "claim-verify"
}
```

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "name": {
   "enum": [
    "claim-verify"
   ],
   "type": "string",
   "description": "Skill name"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentutil-net-29cdba1d/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agentutil.net](https://www.zero.xyz/host/agentutil.net/llms.txt)