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Crypto Price History
x402
Crypto Price History is a paid API for AI agents from chain.tollkit.dev, paid per call via x402, $0.002/call, status unknown (last checked 2026-10-29).
Returns historical USD prices for a crypto asset (ETH, BTC, SOL, LINK) over up to 365 days, sourced from Chainlink on-chain feeds, with summary statistics including first, last, high, low, and percentage change.
Price / call$0.002
Success—
StatusUnknown
How this service works
Crypto price history: give an asset like ETH, BTC or SOL and up to 365 days, get past USD prices from Chainlink's on-chain feed with times, plus first, last, high, low and change.
Output
Returns an array of timestamped USD price data points for the requested asset over the specified time window, along with summary statistics: first price, last price, highest price, lowest price, and total price change (absolute and/or percentage). Data is sourced from Chainlink's on-chain oracle feeds.
Example use cases
Portfolio performance review
“Show me Bitcoin's price history over the last 90 days — I want to see about 48 data points and know what the high, low, and overall change was.”
DeFi strategy backtesting
“Pull the last 365 days of SOL price data from the on-chain Chainlink feed with 100 data points so I can analyze how it's trended over the past year.”
Crypto volatility snapshot
“What did LINK's price look like over the past 14 days? Give me 24 data points and summarize the first price, last price, and how much it changed.”
Technical details
Endpoint
POSThttps://chain.tollkit.dev/chain/history?utm_source=zero.xyzWhen to prefer
Choose this endpoint when you need verified, on-chain historical crypto price data sourced from Chainlink oracles rather than centralized exchange APIs. Ideal for DeFi analytics, backtesting, or any use case requiring trustworthy blockchain-native price history for ETH, BTC, SOL, or LINK without needing an API key or account setup.
Side effects
- Unsupported asset symbol returns an error or empty result
- days or points outside allowed range (1-365, 2-100) causes validation failure
- Chainlink feed temporarily unavailable may cause data gaps or errors
- Payment failure via x402 protocol blocks the request
- Requesting very long history with max points may smooth out granularity significantly
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| days | integer | |
| asset | string | Symbol, e.g. "ETH", "BTC", "SOL", "LINK". |
| points | integer |
Output
Schema · Response
{
"type": "json",
"example": {
"days": 7,
"feed": "0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419",
"note": "Each point is a real Chainlink round: the one nearest each evenly spaced time, with the time it was written on-chain. Chainlink writes a new round when the price moves past a set threshold or a set time passes, so high and low are of these points, not every trade.",
"pair": "ETH / USD",
"asset": "ETH",
"chain": "ethereum",
"points": [
{
"time": "2026-10-13T07:25:11.000Z",
"round_id": "129127208515966895888",
"price_usd": 2523.8693
},
{
"time": "2026-10-14T14:00:11.000Z",
"round_id": "129127208515966895931",
"price_usd": 2452.57
},
{
"time": "2026-10-16T05:04:59.000Z",
"round_id": "129127208515966896004",
"price_usd": 2451.42
},
{
"time": "2026-10-17T10:31:11.000Z",
"round_id": "129127208515966896047",
"price_usd": 2433.7582
},
{
"time": "2026-10-18T22:01:23.000Z",
"round_id": "129127208515966896091",
"price_usd": 2371.0234
},
{
"time": "2026-10-20T06:37:23.000Z",
"round_id": "129127208515966896135",
"price_usd": 2395.39
}
],
"source": "Chainlink Data Feeds on Ethereum, read on-chain",
"read_at": "2026-10-20T07:22:34.320Z",
"summary": {
"low_usd": 2371.0234,
"high_usd": 2523.8693,
"last_usd": 2395.39,
"first_usd": 2523.8693,
"change_pct": -5.09,
"latest_round_at": "2026-10-20T06:37:23.000Z"
},
"explorer_url": "https://etherscan.io/address/0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419"
}
}Tags
x402
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