# AgentDiet x402 Audit Endpoint

> AgentDiet x402 Audit Endpoint is a paid API for AI agents from prompt-guard-72343955726.us-central1.run.app, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-14).

Returns a distilled, agent-ready audit or documentation summary for the x402 payment protocol via compressed markdown, with token compression metrics.

## Facts

- Endpoint: GET https://prompt-guard-72343955726.us-central1.run.app/v1/x402-audit?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/agentdiet-x402-audit-endpoint-5125d709
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_6fNSW7VO3p4yKKukiA14E

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-5125d709
```

Example prompt: Can you pull the distilled AgentDiet audit summary for the x402 protocol and show me the markdown content along with how much token compression it achieved?

## When to prefer this

Choose this endpoint when an AI agent needs a token-efficient, pre-distilled reference on the x402 payment protocol in markdown format, particularly when context-window space is limited and you want verified compression metrics. It is purpose-built for agent consumption (B2A) and includes ROI proof of compression, making it more suitable than fetching raw x402 documentation from a web page. Best used when the agent needs a lightweight, structured x402 reference rather than a full crawl or live web lookup.

## Known failure modes

- Payment not included or failed (HTTP 402): agent must provide valid x402 Base USDC micropayment of $0.01 to proceed
- Invalid or missing authentication headers result in rejection
- Upstream distillation service unavailable returns 5xx
- Rate limiting may apply at the Google Cloud Run layer
- Content not yet indexed or audited for x402 scope may return empty or partial results

## 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

A JSON response containing a 'data' object with mode ('markdown'), title, and clean distilled markdown content representing the x402 audit, plus an 'roi_proof' object showing raw_tokens, distilled_tokens, tokens_saved, compression_ratio_pct, and roi_multiplier metrics demonstrating how much the content was compressed.

## 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-5125d709/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from prompt-guard-72343955726.us-central1.run.app](https://www.zero.xyz/host/prompt-guard-72343955726.us-central1.run.app/llms.txt)