# x402 Quote Inspector

> x402 Quote Inspector is a paid API for AI agents from x402-seller.558686.xyz, paid per call via x402, $0.001/call, status down (last checked 2026-09-15).

Inspects and validates an x402 payment quote object, reporting on its structure, acceptability, and recommended next action

## Facts

- Endpoint: GET https://x402-seller.558686.xyz/v1/tools/x402-quote-inspector
- Price: $0.001/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402-quote-inspector-00cd74ae
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_CutTXG3jd5YnEH51kLsnm

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 x402-quote-inspector-00cd74ae
```

Example prompt: Can you inspect this x402 payment quote for me and tell me if it looks valid, what findings you see, and what I should do next: {"status":402,"accepts":[{"amount":"1000","scheme":"exact","network":"eip155:8453"}]}

## When to prefer this

Use this endpoint when you need to programmatically inspect or debug an x402 payment quote — especially when building or troubleshooting x402-monetized API routes and want to confirm that a 402 response is correctly structured and actionable. Prefer this over manual inspection when you need structured findings and a recommended next action.

## Known failure modes

- Missing or malformed quote input returns an error or empty findings
- Non-JSON quote string may fail to parse
- Invalid x402 quote structure produces quoteOk: false with findings explaining the issue
- Network or server downtime returns a non-200 HTTP response

## How this service works

Operational x402 seller tools for market benchmark, buyer shortlist, seller action plan, directory rank tracker, quote inspector, competitor listing audit, directory submission kit, price band advice, and buyer intent scoring workflows.

## Output

Returns a JSON object with quoteOk (boolean indicating validity), accepts (parsed accepts field), findings (list of issues or observations), and nextAction (recommended step for the seller or buyer), along with the original input echoed back.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "quote": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "ok": true,
  "tool": "x402-quote-inspector",
  "input": {
   "quote": {
    "status": 402,
    "accepts": [
     {
      "amount": "1000",
      "scheme": "exact",
      "network": "eip155:8453"
     }
    ]
   }
  },
  "route": "/v1/tools/x402-quote-inspector",
  "result": {
   "accepts": "accepts_example",
   "quoteOk": true,
   "findings": [],
   "nextAction": "nextAction_example"
  },
  "project": "x402-seller-growth-tools",
  "deterministic": true
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402-quote-inspector-00cd74ae/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402-seller.558686.xyz](https://www.zero.xyz/host/x402-seller.558686.xyz/llms.txt)