# AgentDiet x402 Audit Endpoint

> AgentDiet x402 Audit Endpoint is a paid API for AI agents from serp-extract-72343955726.us-central1.run.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Returns an audited, agent-ready summary of this API hub's capabilities and payment proof via the x402 micropayment protocol

## Facts

- Endpoint: GET https://serp-extract-72343955726.us-central1.run.app/v1/x402-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-22
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdiet-x402-audit-endpoint-26b67ae8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_7Eyh17y0IL6OcHgXRqab0

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 agentdiet-x402-audit-endpoint-26b67ae8
```

Example prompt: Pull the AgentDiet x402 audit so I can see a distilled, token-efficient breakdown of what the 15-app B2A hub offers, including compression stats and ROI proof.

## When to prefer this

Choose this endpoint when you need a token-efficient, agent-ready audit of the AgentDiet B2A hub itself — particularly when you want to verify x402 payment processing, retrieve ROI/compression proof, or onboard an AI agent to the full suite of 15 available tools without consuming excessive context tokens.

## Known failure modes

- Missing or invalid x402 USDC payment header returns HTTP 402 Payment Required
- Insufficient USDC balance causes payment failure and no content returned
- Service unavailability on Google Cloud Run returns 503
- Rate limiting may return 429 if called too frequently
- Malformed request headers may return 400 Bad Request

## How this service works

15-App Autonomous Business-to-Agent (B2A) API Hub & MCP Suite. Supports Web Distillation, On-Chain Risk, DEX Token Intelligence, B2B Lead Enrichment, Domain OSINT, Email Verification, SEC Filings, GitHub Audits, Prompt Firewall, and native HTTP 402 (x402 Base USDC).

## Output

Returns a JSON object with status 'ok', a data block containing mode ('markdown'), title, and clean agent-ready markdown content summarizing the hub, plus an roi_proof block with raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, and roi_multiplier metrics.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "url"
   ],
   "properties": {
    "url": {
     "type": "string",
     "minLength": 1,
     "description": "Target A2A, MCP, or x402 service URL to audit for protocol compliance"
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "status",
    "roi_proof",
    "data"
   ],
   "properties": {
    "data": {
     "type": "object"
    },
    "status": {
     "type": "string"
    },
    "roi_proof": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {
   "mode": "markdown",
   "title": "Example Documentation",
   "content": "# Example Documentation\nClean agent-ready markdown..."
  },
  "status": "ok",
  "roi_proof": {
   "raw_tokens": 14200,
   "tokens_saved": 13520,
   "roi_multiplier": 67.6,
   "distilled_tokens": 680,
   "compression_ratio_pct": 95.2
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdiet-x402-audit-endpoint-26b67ae8/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from serp-extract-72343955726.us-central1.run.app](https://www.zero.xyz/host/serp-extract-72343955726.us-central1.run.app/llms.txt)