# x402trustlayer.xyz Quality Monitor Probe

> x402trustlayer.xyz Quality Monitor Probe is a paid API for AI agents from x402trustlayer.xyz, paid per call via x402, $0.03/call, status unknown (last checked 2026-10-19).

Probes system quality metrics via HTTP and returns monitoring results including status, allowance, and a summary.

## Facts

- Endpoint: POST https://x402trustlayer.xyz/api/quality-monitor/probe?utm_source=zero.xyz
- Price: $0.03/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-19
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/x402trustlayer-xyz-9396a5c9
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_tJGXeq1vUypou1xx7FTQG

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 x402trustlayer-xyz-9396a5c9 -d '<json body>'
```

Example prompt: Run a quality monitor probe on the system using a GET request and tell me whether it's OK, whether it's allowed, and give me a summary of the results.

## When to prefer this

Use this endpoint when you need a quick, paid quality-monitoring probe that returns a structured ok/allowed/summary result for system health assessment. Prefer it over generic uptime checkers when you need the TrustLayer ecosystem's attestation-backed quality metrics and are already operating within the x402 payment flow.

## Known failure modes

- Missing required 'input' object returns validation error
- Invalid HTTP method (e.g. POST or PUT) returns schema error since only GET, HEAD, DELETE are allowed
- Payment failure or insufficient USDC balance returns 402 Payment Required
- Probe target unreachable may return ok: false in the result
- Malformed query parameters may cause unexpected behavior

## How this service works

Runs a quality-monitor probe check for the requested target.

## Output

Returns a JSON object with three fields: 'ok' (boolean indicating if the probe succeeded), 'allowed' (boolean indicating if the resource is permitted), and 'summary' (a human-readable string describing the overall quality monitoring result).

## Example request

```json
{
 "input": {
  "type": "http",
  "method": "GET",
  "queryParams": {}
 }
}
```

## 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",
      "HEAD",
      "DELETE"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "properties": {}
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "required": [
      "ok",
      "allowed",
      "summary"
     ],
     "properties": {
      "ok": {
       "type": "boolean"
      },
      "allowed": {
       "type": "boolean"
      },
      "summary": {
       "type": "string"
      }
     }
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/x402trustlayer-xyz-9396a5c9/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from x402trustlayer.xyz](https://www.zero.xyz/host/x402trustlayer.xyz/llms.txt)