# Agent JSON Evidence Pack

> Agent JSON Evidence Pack 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).

Packages structured evidence — facts, sources, warnings, and a confidence score — around a JSON reliability claim or validation result for AI agents.

## Facts

- Endpoint: POST https://agent-json-reliability.onrender.com/v1/evidence/pack?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/agent-json-evidence-pack-307abb81
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_dPgjO_dtvUaIcSzSmc3l-

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 agent-json-evidence-pack-307abb81 -d '<json body>'
```

Example prompt: Can you pack the evidence for this JSON validation result — pull together the facts, sources, any warnings or contradictions, and give me a confidence score so I can audit what the repair step actually found?

## When to prefer this

Choose this endpoint when you need a structured, machine-readable evidence bundle — facts, sources, warnings, contradictions, and a confidence score — around a JSON reliability or validation event. It is specifically designed for AI agent workflows that require auditable, explainable outputs rather than just a pass/fail result. Prefer it over generic validation endpoints when downstream agents need to reason about confidence levels or trace contradictions.

## Known failure modes

- Malformed request body returns validation error with no evidence pack
- Missing required fields result in empty facts and sources arrays with low confidence score
- x402 payment not provided or insufficient balance causes 402 Payment Required response
- Service unavailable on Render free tier cold-start causing timeout
- High ambiguity in input JSON may yield confidence score near 0.55 with sparse facts

## 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 structured evidence pack containing: a list of facts supporting the reliability claim, source references, warnings encountered during validation or repair, a confidence score (0–1 float), and a list of contradictions detected in the JSON data.

## Response schema (JSON Schema)

```json
{
 "example": {
  "facts": [],
  "sources": [],
  "warnings": [],
  "confidence": 0.55,
  "contradictions": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agent-json-evidence-pack-307abb81/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)