# JSON Evidence Contradiction Finder

> JSON Evidence Contradiction Finder is a paid API for AI agents from agent-json-reliability.onrender.com, paid per call via x402, $0.0075/call, status unknown (last checked 2026-10-01).

Detects logical contradictions and conflicting evidence within JSON data structures

## Facts

- Endpoint: POST https://agent-json-reliability.onrender.com/v1/evidence/contradictions?utm_source=zero.xyz
- Price: $0.0075/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-01
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/json-evidence-contradiction-finder-70c00c4a
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_P6eXj7RfhQid3eA5KonF-

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 json-evidence-contradiction-finder-70c00c4a -d '<json body>'
```

Example prompt: Check this JSON document for any contradicting evidence or conflicting claims — I want to know if any fields or assertions in the data logically contradict each other before I use it downstream.

## When to prefer this

Choose this endpoint when you need to specifically detect logical contradictions and conflicting evidence within a JSON document before acting on it — particularly valuable in agentic pipelines where an LLM has generated structured evidence and you need to verify its internal consistency. Prefer this over general JSON validation when your concern is semantic/logical conflicts between data fields rather than schema compliance or syntax errors.

## Known failure modes

- Invalid or malformed input JSON returns a parse error
- Missing required body fields returns a 400-level error
- Payment not provided or insufficient USDC balance results in a 402 Payment Required response
- Very large or deeply nested JSON documents may timeout
- Empty JSON object may return ok:true with no contradictions found

## How this service works

Deterministic JSON repair and JSON Schema validation for AI agents. Free MCP, inspect, validate, repair. Paid POST /v1/json/reliable 0.003 USDC via x402 on Base.

## Output

Returns a JSON object with an 'ok' boolean indicating success, along with identified contradictions or conflicting evidence pairs found within the submitted JSON document. When contradictions are found, the response details which fields or assertions conflict with one another.

## Response schema (JSON Schema)

```json
{
 "example": {
  "ok": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/json-evidence-contradiction-finder-70c00c4a/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from agent-json-reliability.onrender.com](https://www.zero.xyz/host/agent-json-reliability.onrender.com/llms.txt)