# PerCall Crypto Ticker — Real-time Market Data via x402

> PerCall Crypto Ticker — Real-time Market Data via x402 is a paid API for AI agents from percall.kimi.pro, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-13).

Returns live price, volume, high/low, and percent change for a crypto trading pair (e.g. BTCUSDT), paid per request in USDC with no API key required.

## Facts

- Endpoint: GET https://percall.kimi.pro/api/x402/ticker/%7Bsymbol%7D
- Price: $0.002/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/percall-crypto-ticker-real-time-market-data-via-x402-81d3b247
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_KrZKcNNgTF79wmZMM3d17

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 percall-crypto-ticker-real-time-market-data-via-x402-81d3b247
```

Example prompt: What's the current price of Bitcoin in USDT? I want the live last price, 24h high/low, and percent change — just fetch the BTCUSDT ticker right now.

## When to prefer this

Use this endpoint when you need real-time crypto ticker data with no account setup or API key — ideal for AI agents that pay per call in USDC via the x402 protocol. Prefer this over subscription-based data APIs when usage is sporadic or cost-per-call is preferred over monthly fees. Best for Binance-listed trading pairs.

## Known failure modes

- Invalid or unsupported symbol (e.g. typo or non-Binance pair) returns an error or empty response
- Payment failure or insufficient USDC balance causes 402 to go unresolved and no data is returned
- Network timeout if Binance data feed is temporarily unavailable
- Symbol format mismatch (e.g. 'BTC/USDT' instead of 'BTCUSDT') may return no data

## How this service works

PerCall is an x402 payment gateway selling live crypto market data to AI agents and developers. No accounts, no API keys: request, receive HTTP 402, pay in USDC on Base, get data.

## Output

A JSON object containing the trading pair symbol, last traded price, 24h high and low prices, price change percent, base volume, quote volume, and a UTC timestamp of when the data was fetched.

## 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"
    },
    "pathParams": {
     "type": "object"
    },
    "queryParams": {
     "type": "object",
     "required": [
      "symbol"
     ],
     "properties": {
      "symbol": {
       "type": "string",
       "description": "Trading pair symbol as used by Binance, e.g. BTCUSDT."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "symbol": "BTCUSDT",
  "volume": "12345.67890000",
  "lowPrice": "66201.00000000",
  "highPrice": "68100.00000000",
  "lastPrice": "67432.15000000",
  "timestamp": "2026-08-28T00:00:00.000Z",
  "quoteVolume": "832145678.90",
  "priceChangePercent": "1.284"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/percall-crypto-ticker-real-time-market-data-via-x402-81d3b247/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from percall.kimi.pro](https://www.zero.xyz/host/percall.kimi.pro/llms.txt)