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x402-services Historical Token Price Lookup
x402
x402-services Historical Token Price Lookup is a paid API for AI agents from x402-services-production.up.railway.app, paid per call via x402, $0.005/call, status unknown (last checked 2026-09-14).
Returns the price of a cryptocurrency token at a specific past date or timestamp for backtesting, accounting, and audit purposes.
Price / call$0.005
Success—
StatusUnknown
How this service works
Point-in-time historical price: what did a token cost at a past date/timestamp? Send { coin, when }. Essential for backtesting, accounting, and audits.
Output
A point-in-time USD price for the requested token at the specified date or timestamp, suitable for use in financial calculations, audit trails, and backtesting scenarios.
Example use cases
Example prompt
“What was the price of ETH on March 15, 2023? I need the exact USD price for an accounting audit.”
Technical details
Endpoint
POSThttps://x402-services-production.up.railway.app/api/analytics/price-atWhen to prefer
Use this endpoint when you need a precise historical price for a specific token at a known past date or timestamp — ideal for tax calculations, portfolio P&L, smart contract audits, or backtesting trading strategies. Prefer this over live price endpoints when the date is in the past and accuracy at that moment matters.
Side effects
- Unknown coin symbol or CoinGecko ID returns an error or null price
- Future timestamps default to current price or return an error
- Very old or illiquid tokens may have no historical price data
- Malformed ISO date or unix timestamp causes a validation error
- Payment not processed results in 402 response blocking the call
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| coinrequired | string | Symbol (ETH), coingecko:id, or chain:0xaddress |
| when | string | Unix timestamp or ISO date; default now |
Tags
x402
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