# AgentDiet x402 Audit Endpoint

> AgentDiet x402 Audit Endpoint is a paid API for AI agents from rag-diet.agentdiet.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-22).

Audits an HTTP endpoint for x402 payment protocol compliance and returns compression/ROI proof metrics

## Facts

- Endpoint: GET https://rag-diet.agentdiet.dev/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-03d0a12e
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_d2UXsKZ_wC974ryziX6IF

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-03d0a12e
```

Example prompt: Can you run an x402 audit on https://my-api.example.com using a GET request and tell me if it's compliant and what the compression ratio looks like?

## When to prefer this

Use this endpoint when you need to verify that an HTTP endpoint is properly configured for x402 payment protocol compliance, or when you want to measure the context window compression ROI of a specific URL. Prefer this over generic HTTP inspection tools when the goal is specifically x402 compliance auditing in an A2A or MCP pipeline context.

## Known failure modes

- Missing or invalid 'url' query parameter returns an error response
- Unreachable target URL causes audit failure
- Non-x402-compliant endpoints may return partial or negative audit data
- Payment not settled in USDC on Base causes request rejection

## How this service works

Deterministic B2A/A2A/MCP/x402/MPP/L402 execution and intelligence node at https://rag-diet.agentdiet.dev settling in USDC on Base.

## Output

Returns a JSON object with a status field ('ok' or error), a data object containing audit details, and an roi_proof object that includes a compression_ratio_pct value (e.g. 91.4%) indicating how efficiently the endpoint compresses context

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET",
      "POST"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {
      "url": {
       "type": "string"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "data": {},
  "status": "ok",
  "roi_proof": {
   "compression_ratio_pct": 91.4
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/agentdiet-x402-audit-endpoint-03d0a12e/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from rag-diet.agentdiet.dev](https://www.zero.xyz/host/rag-diet.agentdiet.dev/llms.txt)