Power your products with onchain data.

$ curl -s "https://api.messari.io/metrics/v2/assets/details?assetIDs=bitcoin" \
    -H "x-messari-api-key: $MESSARI_API_KEY"

// GET /metrics/v2/assets/details
{
  "data": [{
    "symbol": "BTC",
    "marketData": {
      "priceUsd": 109561.85
    },
    "returnOnInvestment": {
      "priceChange24h": 1.82
    }
  }]
}

import requests

r = requests.get(
    "https://api.messari.io/metrics/v2/assets/bitcoin/metrics/price/time-series/1d",
    params={
        "start": "2025-06-01T00:00:00Z",
        "end": "2025-06-07T00:00:00Z",
    },
    headers={"x-messari-api-key": KEY},
)

points = r.json()["data"]["points"]
print(points[-1])
# asset price timeseries

const res = await fetch(
  "https://api.messari.io/metrics/v2/assets?search=ethereum&limit=5",
  { headers: { "x-messari-api-key": KEY } },
);

const { data } = await res.json();
// GET /metrics/v2/assets
const assets = data.map(a => ({
  symbol: a.symbol,
  sector: a.sector,
  rank: a.rank,
}));

// mcp.json
{ "mcpServers": { "messari": {
    "url": "https://mcp.messari.io/mcp"
  } } }

> ask_messari: BTC price momentum this week?