# Orbonomy Fact-Check Verify

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

Verifies the truthfulness of a textual claim in a specified language and returns a fact-check result

## Facts

- Endpoint: POST https://main.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-80292aa9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_oOLPddxJfkS-a8Um-Bths

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-80292aa9 -d '<json body>'
```

Example prompt: Can you fact-check this claim for me 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 to programmatically verify specific factual claims in text form, especially for misinformation detection pipelines, journalism tools, or content moderation workflows. Prefer this over manual research when speed and pay-per-call economics matter, and when the claim is a concrete, checkable statement of fact rather than an opinion.

## Known failure modes

- Missing 'claim' field returns validation error
- Missing 'lang' field returns validation error
- Unsupported language code may return error or degraded results
- Empty or very short claim may yield inconclusive result
- Payment failure via x402 protocol results in 402 response and no fact-check result
- Ambiguous or opinion-based claims may not yield a clear true/false verdict

## How this service works

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

## Output

A JSON object with a 'success' boolean indicating whether the fact-check was processed, along with fact-check verdict details about the 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-80292aa9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from main.orbonomy.xyz](https://www.zero.xyz/host/main.orbonomy.xyz/llms.txt)