# Horizon Pulse x402 Bazaar Check

> Horizon Pulse x402 Bazaar Check is a paid API for AI agents from horizonpulse.dev, paid per call via x402, $0.01/call, status unknown (last checked 2026-10-13).

Checks whether an x402 seller is listed in Coinbase CDP Bazaar and explains why if not, with per-route status and actionable fix guidance

## Facts

- Endpoint: GET https://horizonpulse.dev/api/bazaar-check?utm_source=zero.xyz
- Price: $0.01/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/horizon-pulse-x402-bazaar-check-a98da7ed
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_GTa_LyRKbSHLKXKS8cctb

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 horizon-pulse-x402-bazaar-check-a98da7ed
```

Example prompt: Can you check whether my x402 seller at myapi.example.com is listed in Coinbase CDP Bazaar, and if not, tell me exactly what's wrong and how to fix it?

## When to prefer this

Use this endpoint when you need to debug why an x402 seller is absent from Coinbase CDP Bazaar, get a structured per-route breakdown of x402 configuration issues, or receive actionable fix guidance before or after publishing a listing. It is the purpose-built diagnostic tool for x402/Bazaar compliance — prefer it over generic HTTP probing tools when the goal is specifically Bazaar discoverability and x402 protocol conformance.

## Known failure modes

- Private or localhost targets are blocked and return an error
- Non-https URLs are rejected
- Unreachable hosts return a connectivity error
- Missing or malformed /.well-known/x402 results in fail findings rather than a hard error
- Rate limiting or upstream CDP discovery outages may cause transient failures

## How this service works

x402 developer tool. Use to find out whether an x402 seller is listed in Coinbase CDP Bazaar and, if not, why. GET with required url (host or https URL). Reads CDP discovery and the host's /.well-known/x402, then sends one unpaid request per route; never pays. Returns JSON: verdict, per-route indexed status and networks (Base, Solana), and fail/warn findings each with a fix line. https only; private targets blocked. Errors are not charged.

## Output

A JSON object containing a verdict (listed or not), per-route indexed status with supported networks (Base, Solana), and a list of fail and warn findings each accompanied by a specific fix line explaining what to correct.

## 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": "Seller host (e.g. example.com) or https URL (required). A URL path is also probed as a route. https only; private/localhost blocked."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "description": "Horizon Pulse CDP Bazaar index check with lint findings. The example is a trimmed real response recorded from GET /api/demo/bazaar-check at 2026-10-09T16:38Z UTC; live values differ on every call."
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/horizon-pulse-x402-bazaar-check-a98da7ed/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from horizonpulse.dev](https://www.zero.xyz/host/horizonpulse.dev/llms.txt)