# Verity Quick Verify

> Verity Quick Verify is a paid API for AI agents from verity-bzw7.onrender.com, paid per call via x402, $0.02/call, status unknown (last checked 2026-09-15).

Verifies a factual claim and returns a structured verdict (supported/unsupported/uncertain) with confidence score, reasoning, and evidence.

## Facts

- Endpoint: POST https://verity-bzw7.onrender.com/verify/quick
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/verity-quick-verify-31f16823
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_p1rUYk4Ow7qY0QvWa6HIX

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 verity-quick-verify-31f16823 -d '<json body>'
```

Example prompt: Can you verify this claim for me: 'The Eiffel Tower is taller than the Statue of Liberty' — and tell me whether it's supported, unsupported, or uncertain, along with your confidence and the reasoning behind it?

## When to prefer this

Use Verity when an AI agent needs to fact-check or validate a specific factual claim before acting on it, publishing content, or presenting information to a user. Especially suited for agentic pipelines where trust verification is a gating step. Prefer over general web search when you need a structured, machine-readable verdict with confidence and evidence rather than raw search results.

## Known failure modes

- Missing required 'claim' field returns validation error
- Ambiguous or unanswerable claims may return 'uncertain' with low confidence
- Highly obscure or niche claims may lack evidence and return uncertain verdict
- Rate limiting or service unavailability from hosted render.com instance
- Payment failure (x402) results in 402 response before processing

## How this service works

Quick ungrounded reality-check (fast pre-filter).

## Output

Returns a structured verdict object with: a verdict enum ('supported', 'unsupported', or 'uncertain'), a numeric confidence score (0-1), a reasoning string explaining the judgment, and an array of evidence strings backing the verdict.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "required": [
  "claim"
 ],
 "properties": {
  "claim": {
   "type": "string"
  },
  "context": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "title": "Verdict",
 "required": [
  "verdict",
  "confidence",
  "reasoning",
  "evidence"
 ],
 "properties": {
  "verdict": {
   "enum": [
    "supported",
    "unsupported",
    "uncertain"
   ],
   "type": "string",
   "title": "Verdict"
  },
  "evidence": {
   "type": "array",
   "items": {
    "type": "string"
   },
   "title": "Evidence"
  },
  "reasoning": {
   "type": "string",
   "title": "Reasoning"
  },
  "confidence": {
   "type": "number",
   "title": "Confidence"
  }
 },
 "description": "The structured judgment an agent pays for."
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/verity-quick-verify-31f16823/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from verity-bzw7.onrender.com](https://www.zero.xyz/host/verity-bzw7.onrender.com/llms.txt)