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API Keys

API keys authenticate the CLI and the /flashcards skill when uploading cards to your account.

Generating a key

  1. Open the Amber web app
  2. Click your profile icon in the top right
  3. Select API Keys
  4. Click Generate New Key
  5. Copy the key — it’s only shown once

Using a key

Pass it to the CLI:

amber-cards login --api-key YOUR_KEY

The key is stored locally in ~/.config/amber-cards/ and used for all subsequent uploads.

Revoking keys

You can revoke any key from the API Keys page in the web app. Revoked keys stop working immediately.

Security

  • Keys are hashed before storage — we never store your raw key
  • Each key is scoped to your account only
  • Generate separate keys for different machines if you want granular revocation