# Quartermaster x402 Merchant Resource Lookup

> Quartermaster x402 Merchant Resource Lookup is a paid API for AI agents from quartermaster.surewhynot.app, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-14).

Lists all x402 Bazaar resources registered under a given merchant's payTo wallet address.

## Facts

- Endpoint: GET https://quartermaster.surewhynot.app/v1/x402/merchant
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-14
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quartermaster-x402-merchant-resource-lookup-c558d5ad
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_2TLimAjixF-wEd7p2z_0F

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 quartermaster-x402-merchant-resource-lookup-c558d5ad
```

Example prompt: Can you pull up all the x402 Bazaar resources listed under merchant wallet 0x1234567890abcdef1234567890abcdef12345678? Show me up to 20 results.

## When to prefer this

Use this endpoint when you need to enumerate all x402-paid resources belonging to a specific merchant identified by their Ethereum wallet address. Prefer this over the natural-language Bazaar search endpoint when you already know the exact merchant wallet and want a comprehensive inventory of their offerings rather than a keyword-based discovery.

## Known failure modes

- Invalid or malformed wallet address (not matching 0x + 40 hex chars) returns validation error
- Wallet address not found in Bazaar returns empty list
- Missing required payTo parameter returns 400 bad request
- Bazaar service unavailable returns 5xx error
- Limit parameter out of range may return error or be clamped to default of 20

## How this service works

Look up all x402 Bazaar resources listed under a merchant payTo wallet.

## Output

A list of x402 Bazaar resource entries associated with the specified merchant payTo wallet, including endpoint metadata such as URLs, pricing, and descriptions for each listing.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "$schema": "https://json-schema.org/draft/2020-12/schema",
 "required": [
  "input"
 ],
 "properties": {
  "input": {
   "type": "object",
   "required": [
    "type",
    "method"
   ],
   "properties": {
    "type": {
     "type": "string",
     "const": "http"
    },
    "method": {
     "enum": [
      "GET"
     ],
     "type": "string"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "payTo"
     ],
     "properties": {
      "limit": {
       "type": "integer",
       "default": 20
      },
      "payTo": {
       "type": "string",
       "pattern": "^0x[0-9a-fA-F]{40}$",
       "description": "Merchant wallet to look up in the Bazaar"
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/quartermaster-x402-merchant-resource-lookup-c558d5ad/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from quartermaster.surewhynot.app](https://www.zero.xyz/host/quartermaster.surewhynot.app/llms.txt)