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4SEC Crypto Price Lookup by Symbol
x402
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
Price / call$0.01
Success—
StatusDown
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.
Example use cases
Live DeFi token price check
“What's the current price of PEPE in USD right now, and how much has it moved in the last 24 hours?”
Crypto portfolio valuation snapshot
“Pull the latest USD prices for BTC, ETH, and SOL so I can update the value of my portfolio.”
Trading volume spike alert
“Check the 24-hour trading volume for ARB — I want to know if there's been an unusual spike compared to what the price is doing.”
Technical details
Endpoint
GEThttps://api.foursec.xyz/price/%7Bsymbol%7DWhen to prefer
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.
Side effects
- 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
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| properties | string |
Output
Schema · Response
{
"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"
}
}
}Tags
x402
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