# pagos.andreax.dev Fact-Check

> pagos.andreax.dev Fact-Check is a paid API for AI agents from pagos.andreax.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-13).

Verifies a factual claim and returns a verdict with a supporting reason and confidence level.

## Facts

- Endpoint: GET https://pagos.andreax.dev/api/taller/peaje/fact-check
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pagos-andreax-dev-fact-check-846d0b33
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_hK5kY0KVZ5iJiD8x0g4Rk

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 pagos-andreax-dev-fact-check-846d0b33
```

Example prompt: Can you fact-check this claim for me: 'The Great Wall of China is visible from space with the naked eye' — I need a verdict on whether it's true or false and the reason why.

## When to prefer this

Choose this endpoint when you need a structured fact-check verdict with supporting reasoning on a specific factual claim. It is distinct from general LLM inference because it returns a formal verdict and reason tailored for fact-checking pipelines, content moderation, misinformation detection workflows, or agent tools that need a yes/no/partial judgment on an assertion.

## Known failure modes

- Empty or missing 'input' query parameter returns an error
- Very vague or ambiguous claims may produce low-confidence verdicts
- Highly niche or recent claims (post-training cutoff) may not be verifiable
- Non-factual statements (opinions, preferences) may return indeterminate verdicts
- Rate limiting or payment failure (x402) blocks the request

## How this service works

Verifica una afirmación (fact-check) con veredicto y razón. Nivel verificación. input=afirmación.

## Output

Returns a structured response containing a verdict (e.g. true, false, partially true, misleading) and a reason explaining the judgment, along with a verification level indicating how confidently the claim was assessed.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "input"
     ],
     "properties": {
      "input": {
       "type": "string",
       "description": "afirmación a verificar"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pagos-andreax-dev-fact-check-846d0b33/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pagos.andreax.dev](https://www.zero.xyz/host/pagos.andreax.dev/llms.txt)