# Crypto Multi-Venue Price Feed (x402)

> Crypto Multi-Venue Price Feed (x402) is a paid API for AI agents from kr-x402-mvp.kgy5612.workers.dev, paid per call via x402, $0.003/call, status unknown (last checked 2026-10-31).

Returns real-time multi-venue USD prices for crypto symbols (BTC, ETH, SOL, etc.) aggregated from Binance and Coinbase, with 24h change percent, paid per-call via x402 USDC micropayment on Base.

## Facts

- Endpoint: GET https://kr-x402-mvp.kgy5612.workers.dev/api/crypto-price?utm_source=zero.xyz
- Price: $0.003/call
- Payment: x402
- Status: unknown
- Last checked: 2026-10-31
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/crypto-multi-venue-price-feed-x402-bdfed7ac
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_ORIJBUKpt301-G0aqKAF6

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 crypto-multi-venue-price-feed-x402-bdfed7ac
```

Example prompt: What are the current USD prices for BTC, ETH, and SOL right now, including how each has moved in the last 24 hours and what Binance and Coinbase are each showing?

## When to prefer this

Choose this endpoint when your agent needs real-time multi-venue crypto prices without provisioning API keys, and when you want to compare Binance and Coinbase prices in a single call. Ideal for trading agents, portfolio trackers, or arbitrage monitors that operate on a pay-per-call basis via x402 USDC micropayments on Base. Prefer it over exchange-specific APIs when venue spread comparison or key-free access is important.

## Known failure modes

- Payment not received or x402 micropayment rejected — returns 402 Payment Required
- Invalid or unsupported symbol in the symbols query param — may return empty or error for that symbol
- Upstream exchange API (Binance or Coinbase) temporarily unavailable — partial or stale data returned
- Missing or malformed query parameter — defaults to BTC,ETH,SOL if symbols is omitted
- Rate limiting or worker timeout on Cloudflare edge — returns 5xx error

## How this service works

Pay-per-call crypto microdata for trading/onchain AI agents via x402 (USDC on Base): Base gas, token risk, balances, multi-venue prices, Hyperliquid book/funding, kimchi premium. No API keys.

## Output

A JSON object with per-symbol price data including aggregated USD price, Binance USDT price, Coinbase USD price, and 24h percentage change, plus a list of source URLs and an ISO timestamp of when the data was last updated.

## 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",
     "properties": {
      "symbols": {
       "type": "string",
       "examples": [
        "BTC,ETH,SOL",
        "BTC"
       ],
       "description": "Comma-separated symbols (default BTC,ETH,SOL)"
      }
     },
     "additionalProperties": false
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "prices": {
   "BTC": {
    "price_usd": 80867.7,
    "binance_usdt": 80860,
    "coinbase_usd": 80875.4,
    "change_24h_pct": 1.2
   }
  },
  "sources": [
   "https://api.binance.com",
   "https://api.coinbase.com"
  ],
  "updated_at": "2026-10-28T11:00:00Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/crypto-multi-venue-price-feed-x402-bdfed7ac/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from kr-x402-mvp.kgy5612.workers.dev](https://www.zero.xyz/host/kr-x402-mvp.kgy5612.workers.dev/llms.txt)