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

Request
// ⚠️ 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

Metadata Score Breakdown

Estimated from metadata — endpoint not independently tested

This score is estimated from observable metadata — HTTPS support, authentication model, declared CORS, and documentation reachability — because the API requires authentication or exposes no publicly testable endpoint. The five-signal breakdown is only shown for live-tested APIs.

Metadata estimate · endpoint not independently tested

Technical Specifications

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

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