# Quartermaster x402 Bazaar Scout

> Quartermaster x402 Bazaar Scout is a paid API for AI agents from quartermaster.surewhynot.app, paid per call via x402, $0.05/call, status unknown (last checked 2026-09-15).

Searches the Coinbase x402 Bazaar for a capability, live-probes the top candidates for liveness and latency, and returns a ranked shortlist with a best-value pick.

## Facts

- Endpoint: GET https://quartermaster.surewhynot.app/v1/x402/scout
- Price: $0.05/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/quartermaster-x402-bazaar-scout-fe89dfbf
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_EoMC22jSV1bDJkh_7-BOX

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-bazaar-scout-fe89dfbf
```

Example prompt: Scout the Coinbase x402 Bazaar for a capability that does sentiment analysis — I want to see the top live candidates ranked by speed and value, with your best-value pick highlighted.

## When to prefer this

Choose this endpoint when you need not just a raw list of x402 capabilities but a vetted, live-probed recommendation — it combines discovery and health-checking in one call, saving you from separately querying the Bazaar and then probing each result. Prefer it over the plain Discover endpoint when you want an actionable best-value pick rather than a raw dump of listings.

## Known failure modes

- No matching capabilities found in the Bazaar for the query
- All top candidates fail the live 402 probe (dead endpoints)
- Query too vague to return meaningful results
- Bazaar API itself is unavailable, returning an error
- Rate limiting or payment failure for the $0.05 USDC call

## How this service works

Bazaar Scout: searches the Coinbase Bazaar for a capability, live-probes the top candidates (still returning HTTP 402? how fast?), and returns a ranked shortlist with a best-value pick — a vetted result set, not a raw listing dump.

## Output

A ranked shortlist of x402 Bazaar endpoints matching the queried capability, each with live-probe results (HTTP status, latency), and a highlighted best-value recommendation among the live candidates.

## 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": [
      "query"
     ],
     "properties": {
      "query": {
       "type": "string",
       "description": "The capability you're shopping the Bazaar for"
      }
     }
    }
   },
   "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-bazaar-scout-fe89dfbf/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)