API Keys

Some external sources require API keys. All are optional — LibrisLog works out of the box with Open Library.

Google Books API

Enables Google Books as a fallback search source and improves cover resolution.

1. Go to the Google Cloud Console
2. Create a new project or select an existing one
3. Navigate to APIs & Services → Library
4. Search for "Books API" and enable it
5. Go to APIs & Services → Credentials
6. Click Create Credentials → API Key
7. Copy the key and set it as GOOGLE_BOOKS_API_KEY in your .env

Note: Google Books API has usage limits. For most personal use, the free tier is sufficient. See Google's documentation for quota details.

Hardcover API

Enables Hardcover.app as an additional search source.

1. Sign in to hardcover.app
2. Go to your profile → Settings → API
3. Create a new API token
4. Copy the token and set it as HARDCOVER_APP_API_TOKEN in your .env