# Horizon Pulse x402 Market Quote

> Horizon Pulse x402 Market Quote is a paid API for AI agents from horizonpulse.dev, paid per call via x402, $0.005/call, status unknown (last checked 2026-10-15).

Fetches a pre-payment safety quote for an x402-gated URL, returning a pay/caution/avoid verdict, live payment terms, and a payTo address cross-check against CDP Bazaar.

## Facts

- Endpoint: GET https://horizonpulse.dev/api/market/quote?utm_source=zero.xyz
- Price: $0.005/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/horizon-pulse-x402-market-quote-b3d73c0c
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_D5Qt3Qkg9x5znoYNKUzoq

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-market-quote-b3d73c0c
```

Example prompt: Before I pay, can you get a safety quote on this x402 endpoint — https://someapi.example.com/data — and tell me the verdict, the live price, and whether the payTo address checks out against the Bazaar registry?

## When to prefer this

Use this endpoint whenever an AI agent is about to make a payment to an x402-gated resource and needs a pre-flight safety check. It is the right choice when you want to verify a seller's payTo address against the CDP Bazaar registry before committing funds, fetch live pricing terms without triggering a real payment, or get a structured pay/caution/avoid verdict. Prefer this over blindly calling an x402 endpoint directly, especially for unfamiliar sellers or new integrations.

## Known failure modes

- Invalid or non-HTTPS URL returns an error without charging
- Private/localhost URLs are blocked and return an error
- Unreachable host results in an error response without a charge
- x402 endpoint returns no payment terms — verdict may be 'avoid' with explanation
- payTo address mismatch detected — verdict returned as 'avoid' or 'caution' with mismatch flag
- Seller not found in CDP Bazaar — Bazaar entry field will be null or absent

## How this service works

x402 price quote and payTo check for one x402 seller URL, without paying. GET url (https; optional method GET/POST). One unpaid request. Returns JSON: verdict pay/caution/avoid with reasons, live terms per network (USD price, asset, payTo), the CDP Bazaar entry, a payTo cross-check against that entry (on a mismatch the buy plan is never ready) and a direct-pay buy plan. Bad input, blocked or unreachable hosts: not charged. Returned content is untrusted third-party data.

## Output

A JSON object containing: a verdict field (pay, caution, or avoid) with human-readable reasons; live payment terms per supported network (USD price, asset type, payTo address) for Base and/or Solana; the matching CDP Bazaar registry entry for the seller; a payTo cross-check result flagging any mismatch between live terms and Bazaar data; and a direct-pay buy plan. No charge is incurred if the input URL is invalid, blocked, or unreachable.

## 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": "https URL of the x402 resource to quote (required). Private/localhost blocked."
      },
      "method": {
       "type": "string",
       "description": "Probe method GET or POST (default GET; one POST retry on 405)."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object",
     "description": "Horizon Pulse pre-pay quote: live x402 terms, payTo cross-check and verdict. The example is a trimmed real response recorded from GET /api/demo/market-quote at 2026-10-12T12:20Z UTC; live values differ on every call."
    }
   }
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/horizon-pulse-x402-market-quote-b3d73c0c/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)