# Orbonomy Fact-Check Search

> Orbonomy Fact-Check Search is a paid API for AI agents from www.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

Searches for fact-checking results and claim verification data for a given query string, returning a ranked list of fact-check findings.

## Facts

- Endpoint: POST https://www.orbonomy.xyz/api/factcheck/search
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/orbonomy-fact-check-search-c4c1b939
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_QC6VFrMlti6AU_DE1wA4z

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-search-c4c1b939 -d '<json body>'
```

Example prompt: Can you fact-check the claim that 'vaccines cause autism' and return up to 5 results so I can see what the verified findings say?

## When to prefer this

Use this endpoint when you need to programmatically verify claims, statements, or news stories against fact-checking databases, especially when working in journalism, content moderation, or misinformation-detection workflows. Prefer this over generic web search when you specifically need fact-check verdicts rather than raw search results.

## Known failure modes

- Query or limit missing — returns 400 validation error
- No fact-check results found for obscure or very new claims — returns empty results array
- Payment not completed via x402 protocol — returns 402 Payment Required
- Service unavailable or upstream fact-check source down — returns 500 error
- Query too vague or malformed — returns low-quality or zero results

## 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 and a list of fact-check results relevant to the queried claim, including verdicts or summaries from fact-checking sources, limited to the requested number of results.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "limit",
  "query"
 ],
 "properties": {
  "limit": {
   "type": "integer"
  },
  "query": {
   "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-search-c4c1b939/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)