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

# API Keys

To use the Stytch API and SDKs, you need a Stytch account; get your API keys by [signing up](https://stytch.com/start-now).

The Stytch API uses [basic authentication](https://en.wikipedia.org/wiki/Basic%5Faccess%5Fauthentication) with your `project_id` and `secret`. You'll need to pass these values into the Authorization request header for every API call.

```bash theme={null}
curl --request POST \
    --url https://test.stytch.com/v1/magic_links/email/login_or_create \
    -u 'PROJECT_ID:SECRET' \
    -H 'Content-Type: application/json' \
    -d '{
      "email": "sandbox@stytch.com",
    }'
```

You can find your keys in the **Project ID & API keys** section in your [Stytch Dashboard](https://stytch.com/dashboard).

## Frontend SDKs

For our frontend SDKs, you'll use your `public_token` rather than your `project_id` and `secret` when communicating with the Stytch API.

<Columns cols={2}>
  <Card title="B2B SDKs" href="/api-reference/b2b/frontend-sdks/react/overview" />

  <Card title="Consumer SDKs" href="/api-reference/consumer/frontend-sdks/react/overview" />
</Columns>

## Environments

Each Stytch Project has 1 **Live** environment and 1 **Test** environment by default. You can create additional Test environments in the Stytch Dashboard, or via the [Programmatic Workspace Actions API](/api-reference/pwa/api/v3/environments/environment-object).\
Each environment has a distinct Project ID, Secret, and Public token.

* Test environments access the `https://test.stytch.com` API
* Live environments access the `https://api.stytch.com` API

The Stytch API keys and data resources are all scoped per-environment and are *not* shared between environments. For example, a User created in one environment will not be available in another environment.