| name | cmc-api-crypto |
| description | API reference for CoinMarketCap cryptocurrency endpoints including quotes, listings, OHLCV, trending, and categories.
Use this skill whenever the user mentions CMC API, asks how to get crypto data programmatically, wants to build price integrations, or needs REST endpoint documentation. This is the go-to reference for any CMC cryptocurrency API question.
Trigger: "CMC API", "coinmarketcap api", "crypto price API", "get bitcoin price via API", "/cmc-api-crypto"
|
| homepage | https://github.com/coinmarketcap/skills-for-ai-agents-by-CoinMarketCap |
| source | https://github.com/coinmarketcap/skills-for-ai-agents-by-CoinMarketCap |
| user-invocable | true |
| allowed-tools | ["Bash","Read"] |
CoinMarketCap Cryptocurrency API
This skill covers the CoinMarketCap Cryptocurrency API endpoints for retrieving price data, market listings, historical quotes, trending coins, and token metadata.
Authentication
All requests require an API key in the header.
curl -X GET "https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest" \
-H "X-CMC_PRO_API_KEY: your-api-key"
Get your API key at: https://pro.coinmarketcap.com/login
Base URL
https://pro-api.coinmarketcap.com
Common Use Cases
See use-cases.md for goal-based guidance on which endpoint to use:
- Get current price of a token
- Find a token's CMC ID from symbol or name
- Get a token by contract address
- Get top 100 coins by market cap
- Find coins in a price range
- Get historical price at a specific date
- Build a price chart (OHLCV data)
- Find where a coin trades
- Get all-time high and distance from ATH
- Find today's biggest gainers
- Discover newly listed coins
- Get all tokens in a category (e.g., DeFi)
API Overview
| Endpoint | Description | Reference |
|---|
| GET /v1/cryptocurrency/categories | List all categories with market metrics | categories.md |
| GET /v1/cryptocurrency/category | Single category details | categories.md |
| GET /v1/cryptocurrency/listings/historical | Historical listings snapshot | listings.md |
| GET /v1/cryptocurrency/listings/latest | Current listings with market data | listings.md |
| GET /v1/cryptocurrency/listings/new | Newly added cryptocurrencies | listings.md |
| GET /v1/cryptocurrency/map | Map names/symbols to CMC IDs | map.md |
| GET /v1/cryptocurrency/trending/gainers-losers | Top gainers and losers | trending.md |
| GET /v1/cryptocurrency/trending/latest | Currently trending coins | trending.md |
| GET /v1/cryptocurrency/trending/most-visited | Most visited on CMC | trending.md |
| GET /v2/cryptocurrency/info | Static metadata (logo, description, URLs) | info.md |
| GET /v2/cryptocurrency/market-pairs/latest | Trading pairs for a coin | market-pairs.md |
Common Workflows
Get Token Price by Symbol
- First, map the symbol to a CMC ID using
/v1/cryptocurrency/map
- Then fetch the price using
/v2/cryptocurrency/quotes/latest
curl -X GET "https://pro-api.coinmarketcap.com/v1/cryptocurrency/map?symbol=ETH" \
-H "X-CMC_PRO_API_KEY: your-api-key"
curl -X GET "https://pro-api.coinmarketcap.com/v2/cryptocurrency/quotes/latest?id=1027" \
-H "X-CMC_PRO_API_KEY: your-api-key"
Get Top 100 Coins by Market Cap
curl -X GET "https://pro-api.coinmarketcap.com/v1/cryptocurrency/listings/latest?limit=100&sort=market_cap" \
-H "X-CMC_PRO_API_KEY: your-api-key"
Get Historical Price Data
curl -X GET "https://pro-api.coinmarketcap.com/v3/cryptocurrency/quotes/historical?id=1&time_start=2024-01-01&time_end=2024-01-31&interval=daily" \
-H "X-CMC_PRO_API_KEY: your-api-key"
Get Token Metadata
curl -X GET "https://pro-api.coinmarketcap.com/v2/cryptocurrency/info?id=1,1027" \
-H "X-CMC_PRO_API_KEY: your-api-key"
Error Handling
HTTP Status Codes
| Code | Meaning |
|---|
| 200 | Success |
| 400 | Bad request (invalid parameters) |
| 401 | Unauthorized (invalid API key) |
| 403 | Forbidden (endpoint not available on your plan) |
| 429 | Rate limit exceeded |
| 500 | Server error |
Rate Limits
Rate limits depend on your subscription plan. The response headers include:
X-CMC_PRO_API_KEY_CREDITS_USED - Credits used this callX-CMC_PRO_API_KEY_CREDITS_LEFT - Credits remaining
Common Errors
Invalid ID: Ensure you use valid CMC IDs from the /map endpoint. Symbol lookups may return multiple matches.
Missing Required Parameter: Some endpoints require at least one identifier (id, slug, or symbol).
Plan Restrictions: Historical endpoints and some features require paid plans. Check your plan limits.
Error Response Format
{
"status": {
"timestamp": "2024-01-15T12:00:00.000Z",
"error_code": 400,
"error_message": "Invalid value for 'id'",
"credit_count": 0
}
}
Response Format
All responses follow this structure:
{
"status": {
"timestamp": "2024-01-15T12:00:00.000Z",
"error_code": 0,
"error_message": null,
"credit_count": 1
},
"data": { ... }
}
Reference Files
See the references/ directory for complete parameter and response documentation for each endpoint.
