# Orbonomy Fact-Check Search

> Orbonomy Fact-Check Search is a paid API for AI agents from api.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Searches for fact-check results and verified claims related to a given query, returning a list of matches up to a specified limit.

## Facts

- Endpoint: POST https://api.orbonomy.xyz/api/factcheck/search
- Price: $0.05/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-search-446b2d51
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_E_sKSxqTHuARousYnkHwa

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-446b2d51 -d '<json body>'
```

Example prompt: Can you search for fact-checks on the claim that 'vaccines cause autism' and return up to 5 results so I can see what verified sources say about it?

## When to prefer this

Use this endpoint when you need to verify specific claims, find journalistic fact-checks on viral statements, or surface credibility assessments for a given topic. Prefer this over general web search when you specifically need structured fact-check data rather than general information. Best for misinformation detection, claim verification workflows, and content moderation pipelines.

## Known failure modes

- Empty or vague query returns no results
- Limit set too low returns insufficient results
- Query on highly niche topic with no fact-check coverage returns empty list
- Network timeout or service unavailability returns error response
- Malformed request body with missing required fields returns 400-level error

## 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 and a list of fact-check results relevant to the query, up to the specified limit. Each result likely includes the claim, verdict, source, and relevant metadata.

## 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-446b2d51/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.orbonomy.xyz](https://www.zero.xyz/host/api.orbonomy.xyz/llms.txt)