# Orbonomy Fact-Check Summary

> Orbonomy Fact-Check Summary is a paid API for AI agents from app.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-14).

Returns a fact-checking summary for a given topic in a specified language

## Facts

- Endpoint: POST https://app.orbonomy.xyz/api/factcheck/summary
- Price: $0.05/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-summary-f4f9d7dd
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_TuIiyOtZ1IHnwkoDycoJl

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-summary-f4f9d7dd -d '<json body>'
```

Example prompt: Can you fact-check the claim that 'the Great Wall of China is visible from space' and give me a summary in English?

## When to prefer this

Use this endpoint when you need a concise, pay-per-call fact-checking summary on a specific topic in a given language, especially when you want lightweight per-request billing without a subscription. Prefer this over general search when you need a structured verdict or summary rather than raw search results.

## Known failure modes

- Missing required 'topic' or 'lang' field returns a validation error
- Unsupported language code may return an error or fallback
- Ambiguous or overly broad topics may produce low-confidence or generic summaries
- Payment failure via x402 protocol returns 402 Payment Required
- Network timeout for topics requiring extensive data retrieval

## 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 fact-checking summary covering the factual accuracy and consensus around the given topic in the requested language.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "lang",
  "topic"
 ],
 "properties": {
  "lang": {
   "type": "string"
  },
  "topic": {
   "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-summary-f4f9d7dd/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)