# Pathmint Listing Check — x402 Price Verification

> Pathmint Listing Check — x402 Price Verification is a paid API for AI agents from pathmint.edge.report, paid per call via x402, $0.02/call, status unknown (last checked 2026-10-11).

Checks whether a live x402 resource's payment requirement matches its listed price before committing payment

## Facts

- Endpoint: GET https://pathmint.edge.report/v1/listing-check?utm_source=zero.xyz
- Price: $0.02/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-11
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/pathmint-listing-check-x402-price-verification-6b86e953
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_bCHq5O22LjDwF_8J7VnHL

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 pathmint-listing-check-x402-price-verification-6b86e953
```

Example prompt: Before I pay for that x402 resource, can you check whether the live price at https://example-api.com/data actually matches what the listing says it charges?

## When to prefer this

Use this endpoint whenever an AI agent is about to execute an x402 micropayment and wants to confirm the live price challenge matches the advertised listing price. This is especially valuable in automated workflows where an agent might process many x402 calls and needs a cheap ($0.02) guard against price manipulation or stale listings before committing funds.

## Known failure modes

- URL not reachable — resource may be a ghost listing or timed out
- URL does not serve an x402 402 response — endpoint is not an x402 resource
- Verdict returns MISMATCH — live price differs from listing, do not pay
- Missing required 'url' query parameter — request rejected
- Network timeout reaching the target resource

## How this service works

Proven Path Exchange — compile sealed procedures when the savings vs the fee are checkable. Primary: verify-before-pay clearance of an x402 payTo.

## Output

Returns a JSON object with a verdict field (e.g. 'MATCH' or 'MISMATCH'), a payer type, and a product identifier. If MISMATCH, the live 402 challenge is demanding a different amount than the listed price, signaling the agent should not pay without investigation.

## 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"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "url"
     ],
     "properties": {
      "url": {
       "type": "string",
       "description": "x402 resource URL whose listed price you want checked against the live 402"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "payer": "single",
  "product": "pathmint-listing-check",
  "verdict": "MISMATCH"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/pathmint-listing-check-x402-price-verification-6b86e953/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from pathmint.edge.report](https://www.zero.xyz/host/pathmint.edge.report/llms.txt)