# PerCall — Real-time Crypto Spot Price

> PerCall — Real-time Crypto Spot Price is a paid API for AI agents from percall.kimi.pro, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-13).

Returns the live spot price for a crypto trading pair (e.g. BTCUSDT) sourced from Binance, paid per request via x402/USDC with no account or API key required.

## Facts

- Endpoint: GET https://percall.kimi.pro/api/x402/price/%7Bsymbol%7D
- Price: $0.001/call
- Payment: x402
- Status: unknown
- Last checked: 2026-09-13
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/percall-real-time-crypto-spot-price-f92594c8
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_-9l6UDMll6IMSmP7wC55I

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-real-time-crypto-spot-price-f92594c8
```

Example prompt: What's the current spot price of BTCUSDT right now — can you grab the live Binance price for me?

## When to prefer this

Use this endpoint when you need a single, real-time spot price for a specific crypto trading pair and want zero-friction access — no API key, no account, just pay $0.001 USDC per call via x402 on Base. Ideal for AI agents, bots, or scripts that need occasional or sporadic price lookups without committing to a subscription. Prefer this over centralized data APIs when minimizing onboarding friction matters or when building x402-native payment flows.

## Known failure modes

- HTTP 402 returned if x402 payment not yet completed — agent must pay 0.001 USDC on Base to proceed
- Invalid or unsupported symbol returns an error — symbol must match Binance trading pair format (e.g. BTCUSDT not BTC/USD)
- Network or upstream Binance API unavailability may cause timeouts or 5xx errors
- Case sensitivity issues if symbol is not normalized (though endpoint is documented as case-insensitive)

## 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 (e.g. 'BTCUSDT'), the current spot price as a decimal string (e.g. '67432.15000000'), and a UTC timestamp of when the price was retrieved.

## 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, ETHUSDT, SOLUSDC. Case-insensitive."
      }
     }
    }
   },
   "additionalProperties": false
  },
  "output": {
   "type": "object",
   "required": [
    "type"
   ],
   "properties": {
    "type": {
     "type": "string"
    },
    "example": {
     "type": "object"
    }
   }
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "json",
 "example": {
  "price": "67432.15000000",
  "symbol": "BTCUSDT",
  "timestamp": "2026-08-28T00:00:00.000Z"
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/percall-real-time-crypto-spot-price-f92594c8/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)