> For the complete documentation index, see [llms.txt](https://gitbook-docs.coinmetrics.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://gitbook-docs.coinmetrics.io/api-reference/landing-page.md).

# Landing Page

Welcome to the latest Talos Coin Metrics API spec

## Coin Metrics API v4

Version `4.0.0`

This page contains the specs to the Coin Metrics data API. It is generated via OpenAPI spec. Inside you will find a list of all our end points and descriptions of available parameters.

OpenAPI spec `coinmetrics-api-v4-gitbook.yaml` can be downloaded at the bottom of the left toolbar.

### Start here

* [API Conventions](/api-reference/api-conventions.md): timestamps, numbers, paging, response formats, errors, and streaming, as they apply to every endpoint.
* [Backward Compatibility Policy](/api-reference/backward-compatibility.md): what an integration may rely on, and what may change without a new major version.

### Links

* [Coin Metrics Homepage](https://coinmetrics.io/)
* [Python API Client](https://docs.coinmetrics.io/python-api-client)

### Root endpoints

* HTTP API root endpoint: `https://api.coinmetrics.io/v4` — Coin Metrics' paid product.
* WebSocket API root endpoint: `wss://api.coinmetrics.io/v4` — Coin Metrics' paid product.
* Community HTTP API root endpoint: `https://community-api.coinmetrics.io/v4` — no API key required. Available to the community under the [Creative Commons](https://creativecommons.org/licenses/by-nc/4.0/) license.

### Support & legal

* **Support:** <support@coinmetrics.io> — <https://coinmetrics.io/support/>
* **License:** [Apache 2.0](https://www.apache.org/licenses/LICENSE-2.0.html)
* **Terms of Service:** <https://coinmetrics.io/api/terms>


---

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