> ## Documentation Index
> Fetch the complete documentation index at: https://docs.bubblemaps.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Authentication

> Get Access to the Bubblemaps API

## Get Your Key

To access this API, you'll need an API key. Get one on our [Pro platform](https://pro.bubblemaps.io).

## Credits

You get monthly API credits depending on your susbcription. Credit usage resets on your subscription monthly renew date. Monitor and manage your subscription with our [Pro platform](https://pro.bubblemaps.io).

If you go above your available credits, you'll start getting 429 errors.

<Note>
  Each endpoint consumes a different amount of credit. Some have optional
  parameters that increase the consumed credit when used. It's all detailed in
  the documentation of each endpoint.
</Note>

<Info>
  Additionally to this credit system, a 10k calls/minute rate limit is applied
  at the IP level.
</Info>

## Using Your Key

Pass your key in the `X-ApiKey` header of your requests.

Try this out in the [interactive endpoints documentation](/data/api/chains/supported).