# Aether: x402 Payability Evidence Audit

> Aether: x402 Payability Evidence Audit is a paid API for AI agents from aether-x402.vercel.app, paid per call via x402, $0.25/call, status unknown (last checked 2026-10-12).

Audits a block of text or API description for contradictions and unsupported claims related to Base onchain data, token risk, and x402 payability.

## Facts

- Endpoint: POST https://aether-x402.vercel.app/v1/evidence/audit?utm_source=zero.xyz
- Price: $0.25/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-12
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/aether-x402-payability-evidence-audit-75d55f00
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_4tZmnRDR8czajVuGKYC4f

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 aether-x402-payability-evidence-audit-75d55f00 -d '<json body>'
```

Example prompt: Audit this token risk report for contradictions or unsupported claims: 'Token XYZ on Base has zero rug-pull risk, 100% liquidity locked, and is x402-payable — it has never had a suspicious transfer.' Check whether these statements hold up.

## When to prefer this

Choose this endpoint when you need a structured, pay-per-call evidence audit specifically for Base onchain data claims, token risk verdicts, or x402 payability descriptions — particularly when operating in an agent pipeline that already handles x402 micropayments in USDC on Base. Prefer it over general fact-checkers when the content is crypto/DeFi-native and you need machine-readable contradiction and unsupported-claim arrays.

## Known failure modes

- Empty or missing 'text' field returns a validation error
- Text exceeding 40,000 characters is rejected
- Insufficient USDC balance on Base causes x402 payment failure and no audit is returned
- Ambiguous or very short 'request' field may yield shallow audit results
- Service unavailability on Vercel deployment returns 5xx errors

## How this service works

Pay-per-call Base onchain data, token risk verdicts and x402 payability audits over x402 (USDC on Base).

## Output

Returns a JSON object with two arrays: 'contradictions' (statements within the text that conflict with each other or with known facts) and 'unsupportedClaims' (assertions that lack evidentiary backing), enabling downstream agents or users to assess the credibility of the audited content.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "text": {
   "type": "string",
   "maxLength": 40000,
   "minLength": 1
  },
  "request": {
   "type": "string",
   "maxLength": 500
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "contradictions": [],
  "unsupportedClaims": []
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/aether-x402-payability-evidence-audit-75d55f00/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from aether-x402.vercel.app](https://www.zero.xyz/host/aether-x402.vercel.app/llms.txt)