# Orbonomy Fact-Check Summary

> Orbonomy Fact-Check Summary is a paid API for AI agents from backup-v2api.orbonomy.xyz, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-13).

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

## Facts

- Endpoint: POST https://backup-v2api.orbonomy.xyz/api/factcheck/summary
- 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-summary-d4d09b1b
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_UuTOc2S1hCwyWRiEVdRj2

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-d4d09b1b -d '<json body>'
```

Example prompt: Can you give me a fact-check summary on the topic of 5G health risks in English?

## When to prefer this

Use this endpoint when you need a quick, pay-per-call fact-check summary for a specific topic in a particular language without committing to a subscription. Useful for agents that need to verify claims on-demand across multiple languages.

## Known failure modes

- Missing required 'topic' field returns validation error
- Missing required 'lang' field returns validation error
- Unsupported language code may return an error or empty result
- Payment failure via x402 protocol returns 402 status
- Unknown or too-broad topic may return low-quality or empty summary
- Network/server issues on backup domain may cause timeouts

## 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 presumably a fact-check summary covering the truthfulness, context, or verification status of 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-d4d09b1b/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from backup-v2api.orbonomy.xyz](https://www.zero.xyz/host/backup-v2api.orbonomy.xyz/llms.txt)