Crypto price history

Historical price, market cap, and volume time series for a coin. Send GET /api/crypto-history with the required field coin and pay $0.015 per call over x402 or MPP (there is no free tier). It returns a JSON object with coin, currency, days, count and bars.

Granularity is automatic per CoinGecko: <=1 day = 5-min bars, 2-90 days = hourly, >90 days = daily. Days: 1, 7, 14, 30, 90, 180, 365, or "max". Returns aligned arrays of {time, price, marketCap, volume}.

Category: Live public data · Tags: crypto history chart backtest timeseries

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Parameters

Example request

curl -i "https://agent402.tools/api/crypto-history?coin=BTC&days=7&currency=usd"

Without payment this returns HTTP 402 Payment Required with the exact price for crypto-history; any x402 v2 or MPP client pays it and retries.

Example response

{
  "coin": "bitcoin",
  "currency": "usd",
  "days": "7",
  "count": 1,
  "bars": [
    {
      "time": "2026-06-13T00:00:00Z",
      "price": 66120.45,
      "marketCap": 1298000000000,
      "volume": 27400000000
    }
  ]
}

From an MCP client

catalog.call {
  "slug": "crypto-history",
  "params": {
    "coin": "BTC",
    "days": "7",
    "currency": "usd"
  }
}

The hosted connector at https://agent402.tools/mcp needs a payment for crypto-history; the stdio package pays it from a wallet or from AGENT402_CREDITS_KEY. Local install: npx -y agent402-mcp.

Errors and behavior

• coin is required. An input the tool rejects returns an HTTP 4xx whose body carries error, tool, expected, required and example, so the caller can correct it.
• A paid call that ends in any status of 400 or above is not charged over x402, MPP or a prepaid credits key: settlement is cancelled when the tool fails. The exception is a Tempo push credential, a transfer the buyer sent before the call: it settles before the tool runs, so if the tool then fails the payment is recorded as a refund owed to the paying wallet.
• Wallet-only: this tool reaches the network or stored state, so it has no proof-of-work tier. A prepaid card-credits key issued earlier (Authorization: Bearer a402_...) also pays it.
• A POST with a JSON body to /api/crypto-history is served as this GET, with the body as the input.
• An Idempotency-Key header makes a retried paid call replay the first 200 instead of charging again (an answer larger than 1 MB is not replayed).

Paid call (JavaScript agent)

import { wrapFetchWithPayment } from "@x402/fetch";
import { x402Client } from "@x402/core/client";
import { registerExactEvmScheme } from "@x402/evm/exact/client";
import { privateKeyToAccount } from "viem/accounts";

const client = new x402Client();
client.setSpendControls?.(false); // keep your own spending ceiling in code
registerExactEvmScheme(client, { signer: privateKeyToAccount(KEY) });
const payFetch = wrapFetchWithPayment(fetch, client);

const res = await payFetch("https://agent402.tools/api/crypto-history?coin=BTC&days=7&currency=usd");

Part of these workflows

Crypto price history is one step in these 3 skill packs, each sold as a single call:

• Crypto research - Pull live price, market structure, OHLC history, trending status, global market context, and recent news for a single coin in one pass.
• Cross-asset price monitor - Side-by-side snapshot of a stock and a crypto asset: the equity's latest close against a live crypto quote, a trailing-year series for each, and a date-stamped comparison.
• Crypto dossier - Everything about a cryptocurrency in one call: live price, 90-day history, trending status, global market context, news search, and top article extraction.

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