> 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/cm-api-spec/landing-page.md).

# Landing Page

## 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.

### Links

* [Coin Metrics Homepage](https://coinmetrics.io/)
* [API Backward Compatibility Policy](https://docs.coinmetrics.io/access-our-data/api#backward-compatibility)
* [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>


---

# Agent Instructions
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## Querying This Documentation
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Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
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```

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