curl --request GET \
  --url https://api.messari.io/metrics/v2/assets/details \
  --header 'X-Messari-API-Key: <api-key>'

import requests

url = "https://api.messari.io/metrics/v2/assets/details"

headers = {"X-Messari-API-Key": "<api-key>"}

response = requests.get(url, headers=headers)

print(response.text)

const options = {method: 'GET', headers: {'X-Messari-API-Key': '<api-key>'}};

fetch('https://api.messari.io/metrics/v2/assets/details', options)
  .then(res => res.json())
  .then(res => console.log(res))
  .catch(err => console.error(err));

<?php

$curl = curl_init();

curl_setopt_array($curl, [
  CURLOPT_URL => "https://api.messari.io/metrics/v2/assets/details",
  CURLOPT_RETURNTRANSFER => true,
  CURLOPT_ENCODING => "",
  CURLOPT_MAXREDIRS => 10,
  CURLOPT_TIMEOUT => 30,
  CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
  CURLOPT_CUSTOMREQUEST => "GET",
  CURLOPT_HTTPHEADER => [
    "X-Messari-API-Key: <api-key>"
  ],
]);

$response = curl_exec($curl);
$err = curl_error($curl);

curl_close($curl);

if ($err) {
  echo "cURL Error #:" . $err;
} else {
  echo $response;
}

package main

import (
	"fmt"
	"net/http"
	"io"
)

func main() {

	url := "https://api.messari.io/metrics/v2/assets/details"

	req, _ := http.NewRequest("GET", url, nil)

	req.Header.Add("X-Messari-API-Key", "<api-key>")

	res, _ := http.DefaultClient.Do(req)

	defer res.Body.Close()
	body, _ := io.ReadAll(res.Body)

	fmt.Println(string(body))

}

HttpResponse<String> response = Unirest.get("https://api.messari.io/metrics/v2/assets/details")
  .header("X-Messari-API-Key", "<api-key>")
  .asString();

require 'uri'
require 'net/http'

url = URI("https://api.messari.io/metrics/v2/assets/details")

http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true

request = Net::HTTP::Get.new(url)
request["X-Messari-API-Key"] = '<api-key>'

response = http.request(request)
puts response.read_body

{
  "error": null,
  "data": [
    {
      "id": "1e31218a-e44e-4285-820c-8282ee222035",
      "name": "Bitcoin",
      "slug": "bitcoin",
      "symbol": "BTC",
      "rank": 1,
      "category": "Cryptocurrency",
      "sector": "Cryptocurrency",
      "sectorV2": [
        "Networks"
      ],
      "subSectorV2": [
        "Layer-1"
      ],
      "tags": [
        "Proof-of-Work"
      ],
      "description": "Bitcoin is the first distributed, [consensus-based](https://messari.io/resource/distributed-systems), censorship-resistant, permissionless, peer-to-peer payment settlement network with a provably scarce, programmable, native currency. The Bitcoin network is an emergent decentralized monetary institution that exists through the interplay of [full nodes](https://messari.io/resource/node), [miners](https://messari.io/resource/mining), and developers. Furthermore, it is set by a social contract created and opted into by the network’s users, which is hardened through [game theory](https://messari.io/c/resource/game-theory) and [cryptography](https://messari.io/resource/cryptography).",
      "links": [
        {
          "name": "Block Explorer",
          "url": "https://btc.com/"
        },
        {
          "name": "Reddit",
          "url": "https://www.reddit.com/r/Bitcoin/"
        },
        {
          "name": "Telegram",
          "url": "http://t.me/bitcoin"
        },
        {
          "name": "Twitter",
          "url": "https://x.com/bitcoin"
        },
        {
          "name": "Whitepaper",
          "url": "https://bitcoin.org/bitcoin.pdf"
        }
      ],
      "marketData": {
        "priceUsd": 109561.84962799776,
        "priceBtc": 1,
        "priceEth": 28.42123153695255,
        "priceAt": "2025-10-31T21:51:00Z",
        "volume24Hour": 37244476633.788055,
        "ohlcv1HourUsd": {
          "open": 109439.32026503174,
          "high": 109698.95284660516,
          "low": 109299.36800144248,
          "close": 109561.84962799776,
          "volume": 603815659.2393597
        },
        "ohlcv24HourUsd": {
          "open": 107886.3731909698,
          "high": 111052.95144763196,
          "low": 107488.36708460524,
          "close": 109561.84962799776,
          "volume": 37244476633.788055
        },
        "ohlcvTodayUsd": {
          "open": 108409.42191881951,
          "high": 111052.95144763196,
          "low": 108336.08677901482,
          "close": 109561.84962799776,
          "volume": 35135998507.94298
        },
        "supply": {
          "circulating": 19942003,
          "total": 19942003,
          "max": 21000000
        },
        "marketcap": {
          "circulatingUsd": 2183799108966,
          "fullyDilutedUsd": 2183875362846.2527,
          "dominance": 55.8734
        }
      },
      "networkSlugs": [
        "bitcoin"
      ],
      "protocolSlugs": [],
      "returnOnInvestment": {
        "priceChange24h": 1.537031626038965,
        "priceChange7d": -1.3831074354356603,
        "priceChange30d": -6.80398769323561,
        "priceChange1y": 55.79069548749654,
        "priceChange3y": 434.7113533742335,
        "priceChange5y": 695.8437840952291,
        "priceChangeMTD": -3.9439734983016552,
        "priceChangeQTD": -3.9439734983016552,
        "priceChangeYTD": 17.281626402277535
      },
      "allTimeHigh": {
        "allTimeHigh": 126238.2220708942,
        "allTimeHighDate": "2025-10-06T18:00:00Z",
        "allTimeHighTimeSinceSeconds": 2174030,
        "allTimeHighPercentDown": 13.198250307605644,
        "breakevenMultiple": 1.1525723835282684,
        "cycleLow": 103553.13308598916,
        "cycleLowDate": "2025-10-17T10:00:00Z",
        "cycleLowTimeSinceSeconds": 1252430,
        "cycleLowPercentUp": 5.924644699199363
      },
      "contractAddresses": []
    },
    {
      "id": "21c795f5-1bfd-40c3-858e-e9d7e820c6d0",
      "name": "Ethereum",
      "slug": "ethereum",
      "symbol": "ETH",
      "rank": 2,
      "category": "Networks",
      "sector": "Smart Contract Platform",
      "sectorV2": [
        "Networks"
      ],
      "subSectorV2": [
        "Layer-1"
      ],
      "tags": [
        "EVM",
        "Proof-of-Stake",
        "Stakeable"
      ],
      "description": "[Ethereum](https://ethereum.org/en/) is a distributed blockchain computing platform for [smart contracts](https://ethereum.org/en/smart-contracts/) and decentralized applications. The network enables users to build extensively through the use of smart contracts and has since led to the creation of various new assets and industries, such as Decentralized Finance (DeFi), Non-Fungible Tokens (NFTs), Decentralized Autonomous Organizations (DAOs), [Web3](https://ethereum.org/en/web3/), and more. It features an execution engine optimized for smart contract processing, the [Ethereum Virtual Machine](https://ethereum.org/en/developers/docs/evm/) (EVM), and a [Proof-of-Stake](https://ethereum.org/en/developers/docs/consensus-mechanisms/pos/#what-is-pos) (PoS) consensus mechanism. \n",
      "links": [
        {
          "name": "Reddit",
          "url": "https://www.reddit.com/r/ethereum/"
        },
        {
          "name": "Github",
          "url": "https://github.com/ethereum"
        },
        {
          "name": "Whitepaper",
          "url": "https://ethereum.org/en/whitepaper/"
        },
        {
          "name": "Website",
          "url": "https://www.ethereum.org/"
        },
        {
          "name": "Twitter",
          "url": "https://x.com/ethereum"
        }
      ],
      "marketData": {
        "priceUsd": 3854.929702308933,
        "priceBtc": 0.035184963702217686,
        "priceEth": 1,
        "priceAt": "2025-10-31T21:51:00Z",
        "volume24Hour": 20271790416.765724,
        "ohlcv1HourUsd": {
          "open": 3856.617660370591,
          "high": 3863.932957760635,
          "low": 3841.8307023833895,
          "close": 3854.929702308933,
          "volume": 545921577.1027225
        },
        "ohlcv24HourUsd": {
          "open": 3772.7390594009144,
          "high": 3899.1216087488383,
          "low": 3765.25990289479,
          "close": 3854.929702308933,
          "volume": 20271790416.765724
        },
        "ohlcvTodayUsd": {
          "open": 3807.351537991842,
          "high": 3899.1216087488383,
          "low": 3798.3147665857873,
          "close": 3854.929702308933,
          "volume": 19171185580.72193
        },
        "supply": {
          "circulating": 120698039.69,
          "total": 120698039.688021,
          "max": 0
        },
        "marketcap": {
          "circulatingUsd": 464718966398,
          "fullyDilutedUsd": 464718966398,
          "dominance": 11.89
        }
      },
      "networkSlugs": [
        "polygon-zkevm",
        "base",
        "arbitrum-one",
        "optimism",
        "ethereum-classic"
      ],
      "protocolSlugs": [],
      "returnOnInvestment": {
        "priceChange24h": 2.252255092690719,
        "priceChange7d": -2.255033059081572,
        "priceChange30d": -10.48746606148617,
        "priceChange1y": 52.853257934702356,
        "priceChange3y": 143.95766358327145,
        "priceChange5y": 871.6158122354636,
        "priceChangeMTD": -7.019368457253019,
        "priceChangeQTD": -7.019368457253019,
        "priceChangeYTD": 15.821645335568938
      },
      "allTimeHigh": {
        "allTimeHigh": 4953.378632189802,
        "allTimeHighDate": "2025-08-24T19:00:00Z",
        "allTimeHighTimeSinceSeconds": 5885630,
        "allTimeHighPercentDown": 22.112005894203612,
        "breakevenMultiple": 1.2848747365008981,
        "cycleLow": 3502.98917829104,
        "cycleLowDate": "2025-10-10T21:00:00Z",
        "cycleLowTimeSinceSeconds": 1817630,
        "cycleLowPercentUp": 10.307656673363399
      },
      "contractAddresses": [
        {
          "networkName": "Base",
          "networkSlug": "base",
          "contractAddress": "0x4200000000000000000000000000000000000006"
        },
        {
          "networkName": "Arbitrum",
          "networkSlug": "arbitrum-one",
          "contractAddress": "0x82aF49447D8a07e3bd95BD0d56f35241523fBab1"
        },
        {
          "networkName": "Ethereum Classic",
          "networkSlug": "ethereum-classic",
          "contractAddress": "0x218c3c3d49d0e7b37aff0d8bb079de36ae61a4c0"
        }
      ]
    }
  ]
}

{
  "data": "<unknown>",
  "error": "<string>"
}

{
  "data": "<unknown>",
  "error": "<string>"
}

{
  "data": "<unknown>",
  "error": "<string>"
}