# Orbonomy Fact-Check Verify

> Orbonomy Fact-Check Verify is a paid API for AI agents from www.orbonomy.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-15).

Verifies the factual accuracy of a text claim in a specified language, returning a success/result object

## Facts

- Endpoint: POST https://www.orbonomy.xyz/api/factcheck/verify
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orbonomy-fact-check-verify-a3349d81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_c8pM0Hbcwl79mpGl_ayHP

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 orbonomy-fact-check-verify-a3349d81 -d '<json body>'
```

Example prompt: Can you fact-check this claim in English: 'The Great Wall of China is visible from space with the naked eye'?

## When to prefer this

Use this endpoint when you need automated, pay-per-call fact-checking of specific textual claims, especially in a multilingual context. Prefer it over general LLM reasoning when you need an independent verification service with a structured, auditable result rather than a model's internal knowledge judgment.

## Known failure modes

- Missing required 'claim' field returns validation error
- Missing or unsupported 'lang' code may cause processing failure
- Empty or ambiguous claims may yield inconclusive results
- Payment failure via x402 protocol returns 402 status
- Rate limiting may return 429 for high-frequency callers
- Very long claims may be truncated or rejected

## How this service works

50+ pay-per-call API endpoints across accommodation, AI, content, fact-checking, and data services. Powered by x402 protocol.

## Output

Returns a JSON object with a 'success' boolean indicating whether the verification call succeeded, along with likely fact-check verdict data about the truthfulness or accuracy of the submitted claim.

## Request schema (JSON Schema)

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

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "success": {
   "type": "boolean"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/orbonomy-fact-check-verify-a3349d81/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from www.orbonomy.xyz](https://www.zero.xyz/host/www.orbonomy.xyz/llms.txt)