> For the complete documentation index, see [llms.txt](https://docs.tardis.dev/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.tardis.dev/readme.md).

# Welcome

Historical cryptocurrency market data from 50+ exchanges, with Python and Node.js clients for replay and direct real-time feeds.

<table data-card-size="large" data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-cover data-type="image"></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>Exchange Coverage</strong></td><td>Supported exchanges, symbols, channels and historical date ranges.</td><td><a href="https://2257279413-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LihqQrMLN4ia7KgxAzi%2Fuploads%2Fgit-blob-abf9d353e4613f1802df236477f4d021c82e6d92%2Fcard-exchanges.jpeg?alt=media">card-exchanges.jpeg</a></td><td><a href="/historical-data-details/overview.md">Overview</a></td></tr><tr><td><strong>Agents and AI</strong></td><td>Manage account access, subscriptions and Data API keys with an AI assistant.</td><td><a href="https://2257279413-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LihqQrMLN4ia7KgxAzi%2Fuploads%2Fgit-blob-f6bb02237971c68818d7cdc7d1f843a6d31f26f0%2Fcard-agents.jpeg?alt=media">card-agents.jpeg</a></td><td><a href="/agents-and-ai.md">Agents and AI</a></td></tr><tr><td><strong>Market Data API</strong></td><td>Access raw historical feeds over HTTP, or replay and stream with Python or Node.js.</td><td><a href="https://2257279413-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LihqQrMLN4ia7KgxAzi%2Fuploads%2Fgit-blob-e6731cf3c6dae1c06b11c0afd9abc611d00e551e%2Fcard-api.jpeg?alt=media">card-api.jpeg</a></td><td><a href="/api/quickstart.md">Quickstart</a></td></tr><tr><td><strong>Downloadable CSV Files</strong></td><td>Download tick-level trades, order book updates and other datasets.</td><td><a href="https://2257279413-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-LihqQrMLN4ia7KgxAzi%2Fuploads%2Fgit-blob-b826333dae48074a97d659e774ebcd31e98370d7%2Fcard-csv.jpeg?alt=media">card-csv.jpeg</a></td><td><a href="/downloadable-csv-files/overview.md">Quickstart</a></td></tr></tbody></table>


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# Agent Instructions
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## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the following URL with the `ask` and `goal` query parameters:

```
GET https://docs.tardis.dev/readme.md?ask=<question>&goal=<user_goal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is what the user is ultimately trying to achieve, the reason they need the answer. Sharing it helps GitBook give you a better, more relevant answer. A goal is most helpful when it describes the outcome the user wants rather than restating the question. For example, with `ask=how do I create an API token`, a goal like `build a script that syncs our docs to a CMS` lets GitBook tailor the answer to that use case.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.