Messari API

⭐ Beginner's Pick Cryptocurrency / No Auth Required Beginner HTTPS
Free to Use Varies (check documentation)

Overview

Messari provides comprehensive data on thousands of cryptocurrency assets, including prices, market caps, and on-chain metrics. It is a great resource for developers building crypto analytics dashboards or research tools. The public endpoints require no authentication, making it easy to start experimenting immediately.

💡

Beginner Tip

The public API has no authentication requirement, so you can start fetching crypto asset data right away without signing up. Start with the /assets endpoint to explore available data fields.

Available Data

coin price in USD/EUR
market capitalization
24h price change
trading volume
circulating supply

Example Response

JSON Response
{
  "id": "bitcoin",
  "symbol": "btc",
  "current_price": 65432.1,
  "market_cap": 1280000000000,
  "price_change_24h": 1250.5,
  "price_change_percentage_24h": 1.95,
  "total_volume": 28500000000
}

Field Reference

id Unique identifier for the asset
symbol Ticker symbol of the cryptocurrency (e.g., BTC)
name Full name of the cryptocurrency
market_data.price_usd Current USD price of the asset
market_data.volume_last_24_hours Trading volume over the last 24 hours in USD
market_data.percent_change_usd_last_24_hours Percentage price change over the last 24 hours

Implementation Example

// ⚠️ Note: This URL may be a documentation page. Check official docs for actual API endpoint.
const url = "https://messari.io/api";
const response = await fetch(url);
if (!response.ok) throw new Error(`Request failed: ${response.status}`);
const data = await response.json();
console.log(data);

What Can You Build?

Note: These code examples are AI-generated and unverified. Always refer to the official API documentation for accurate usage.

Common Errors & Troubleshooting

429 Too Many Requests Exceeding the rate limit on the free public tier
Add delays between requests or sign up for a Messari API key to get higher rate limits
Empty or null metric fields Some metrics are only available to paid subscribers
Check the Messari docs for which fields require a paid plan; use only the publicly available fields for free-tier access
404 Not Found for an asset Using an incorrect asset slug or symbol
Use the /assets endpoint to list all valid slugs, and use those exact slugs in subsequent requests

Matrix Score Breakdown

🌐 Reachability 0/30
⚡ Speed 20/20
🔒 Security 15/15
🛠 Developer XP 15/20
✓ Reliability 7/15
Response Time 38ms

Fully tested on Apr 5, 2026

Technical Specifications

Auth No Auth
HTTPS REQUIRED
CORS UNKNOWN
Category Cryptocurrency
Difficulty Beginner
Verified: 2026-04-04

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