Crypto prices

$0.002 per call · failed calls are never charged · no account or subscription: pay per call with a card key or USDC

Current price of up to 25 cryptocurrencies by CoinGecko id (bitcoin, ethereum, solana, usd-coin…) in up to 5 currencies, with the 24-hour change (from Coinbase for the coins it trades; tickers such as BTC work too). Use to price coins that are not on-chain tokens, value a portfolio in several currencies, or check a move.

Run it free (25 free calls) Buy credits by card (from $1) Example result (JSON)

Try it with your own inputs

Comma-separated CoinGecko ids

Uses one of your 25 free calls. Nothing is charged, and a call that fails is not counted.

Inputs

NameTypeDescription
ids (required)stringComma-separated CoinGecko ids
vsstringComma-separated currencies (default usd)

Request

Over HTTP, with a card key from /credits:

curl -H "Authorization: Bearer adt_…" "https://tools.funwords.eu/crypto/price?ids=bitcoin%2Cethereum"

Or one of your 25 free calls, no key:

curl "https://tools.funwords.eu/crypto/price?ids=bitcoin%2Cethereum&trial=1"

Without a key, the same URL answers 402 Payment Required with x402 and MPP terms, so an agent with a wallet pays per call in USDC (Base, Polygon, Arbitrum or Solana over x402; Base or Tempo over MPP) and retries.

Example result

{
  "prices": {
    "bitcoin": {
      "usd": 101250.5,
      "usd_24h_change": -1.2,
      "usd_market_cap": null
    },
    "ethereum": {
      "usd": 2241.23,
      "usd_24h_change": 0.84,
      "usd_market_cap": null
    }
  },
  "missing": [],
  "source": "Coinbase"
}

From an AI agent (MCP)

Add the MCP server to Claude, Cursor or any MCP client. This tool is crypto_price, and the first 25 successful calls are free:

https://tools.funwords.eu/mcp

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