coinmetrics-api-client 2026.4.9.19

Python client for Coin Metrics API v4.

Coin Metrics Python API Client

The Coin Metrics Python API Client is the official Python wrapper for the Coin Metrics API, allowing you to access Coin Metrics data using Python. In just a few lines of code, anyone can access clean cryptocurrency data in a familiar form, such as a pandas dataframe.

This tool offers the following convenient features over simply using requests to query the Coin Metrics API:

• Automatic Pagination. The Coin Metrics API limits most endpoints to no more than 10,000 entries, requiring users to handle pagination. The Python API Client handles this automatically.
• DataFrames. Users may access Coin Metrics data using pandas DataFrames and potentially other data structures, such as polars.
• Data Exports. Users may export API outputs to CSV and JSON files.
• Typing. DataFrames are automatically converted to the appropriate data types.
• Parallelization. Users may submit many requests at once to extract data much more quickly than sending one request at a time.

Getting Started

Installation and Updates

To install the client you can run the following command:

pip install coinmetrics-api-client

Note that the client is updated regularly to reflect the changes made in API v4. Ensure that your latest version matches with what's in pyPI

To update your version, run the following command:

pip install coinmetrics-api-client -U

Initialization

To initialize the client you should use your API key, and the CoinMetricsClient class like the following.

from coinmetrics.api_client import CoinMetricsClient
import os

# we recommend storing your Coin Metrics API key in an environment variable
api_key = os.environ.get("CM_API_KEY")
client = CoinMetricsClient(api_key)

# or to use community API:
client = CoinMetricsClient()