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

# API keys

> Generate and manage the keys your applications use to call the EDN API.

## What API keys are for

API keys authenticate your applications when they call the EDN API. A key is
presented on each request as `Authorization: Bearer <key>`. See
[Authentication](/authentication).

The API keys area is available from the Pro tier upwards.

## Creating a key

On the API Keys page, create a key by giving it a label. You can optionally set
a retention period in days, or leave it unlimited.

<Warning>
  A new key is shown in full exactly once, at creation. Copy it then and store
  it securely. You will not be able to see the full key again.
</Warning>

## Managing keys

The page lists your keys with a masked identifier, their label, and when they
were created. For each key you can:

* Toggle it active or inactive.
* Delete it, with a confirmation step.