# Orbonomy Fact-Check Verify

> Orbonomy Fact-Check Verify is a paid API for AI agents from app.orbonomy.xyz, paid per call via x402, $0.1/call, status unknown (last checked 2026-09-14).

Verifies whether a given claim is factually accurate, returning a success indicator for the fact-check result.

## Facts

- Endpoint: POST https://app.orbonomy.xyz/api/factcheck/verify
- Price: $0.1/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orbonomy-fact-check-verify-5a32ba53
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_Ah_NkamdobUbmpOTeYbdS

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-5a32ba53 -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

Choose this endpoint when you need a pay-per-call, no-subscription fact-checking service that supports multiple languages and integrates with the x402 micropayment protocol. Ideal for agents that need to verify individual claims on demand without a recurring API subscription.

## Known failure modes

- Missing required 'claim' field returns validation error
- Missing required 'lang' field causes rejection
- Unsupported language code may result in failure
- Ambiguous or overly vague claims may yield inconclusive results
- Payment failure via x402 protocol results in 402 response before processing

## 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 boolean 'success' field indicating whether the fact-check operation completed successfully; the response likely also includes a verdict or confidence on the claim's accuracy.

## 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-5a32ba53/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from app.orbonomy.xyz](https://www.zero.xyz/host/app.orbonomy.xyz/llms.txt)