# 4SEC Crypto Price Lookup by Symbol

> 4SEC Crypto Price Lookup by Symbol is a paid API for AI agents from api.foursec.xyz, paid per call via x402, $0.01/call, status down (last checked 2026-09-15).

Returns real-time aggregated price, 24h change, and volume for a cryptocurrency symbol sourced from multiple DEXes

## Facts

- Endpoint: GET https://api.foursec.xyz/price/%7Bsymbol%7D
- Price: $0.01/call
- Payment: x402
- Status: down
- Last checked: 2026-09-15
- Activations on Zero: 0
- Tags: x402
- Canonical page: https://www.zero.xyz/c/4sec-crypto-price-lookup-by-symbol-ddedd197
- Structured record (JSON): https://api.zero.xyz/v1/capabilities/cap_5lHlQOpciMqLKV6-1ApKN

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 4sec-crypto-price-lookup-by-symbol-ddedd197
```

Example prompt: What's the current USD price, 24-hour change, and trading volume for ETH according to 4SEC's multi-DEX aggregator?

## When to prefer this

Choose this endpoint when you need real-time, multi-DEX aggregated price data for a crypto token and want pay-per-request pricing in USDC with no API key subscription required. It is especially useful for DeFi-native workflows where on-chain micropayments via the x402 protocol are acceptable and no centralized exchange price feed is needed.

## Known failure modes

- Unknown or unsupported token symbol returns an error or empty result
- Network latency or DEX data unavailability may result in stale or missing price data
- Malformed symbol input (e.g. lowercase vs uppercase mismatch) may cause a 404 or empty response
- Payment failure via x402/USDC on Base blocks the request before data is returned

## How this service works

Real-time multi-DEX aggregated crypto market data. Pay per request with USDC on Base via x402 protocol.

## Output

A JSON object containing the token symbol, current price in USD, 24h percentage price change, 24h trading volume in USD, a timestamp of when the data was fetched, and an array of DEX sources contributing to the aggregated price.

## Request schema (JSON Schema)

```json
{
 "type": "object",
 "properties": {
  "properties": {
   "type": "string"
  }
 }
}
```

## Response schema (JSON Schema)

```json
{
 "type": "object",
 "example": {
  "symbol": {
   "type": "string"
  },
  "sources": {
   "type": "array"
  },
  "price_usd": {
   "type": "number"
  },
  "timestamp": {
   "type": "string",
   "format": "date-time"
  },
  "change_24h": {
   "type": "number"
  },
  "volume_24h_usd": {
   "type": "number"
  }
 }
}
```

## More

- Live health (JSON, refreshed every minute): https://www.zero.xyz/c/4sec-crypto-price-lookup-by-symbol-ddedd197/health.json
- [Zero catalog index](https://www.zero.xyz/llms.txt)
- [Other services from api.foursec.xyz](https://www.zero.xyz/host/api.foursec.xyz/llms.txt)