name: ISBNdb API Plans and Pricing description: Subscription plans for access to the ISBNdb book and ISBN database REST API url: https://isbndb.com/isbn-database plans: - name: Basic description: Entry-level plan for developers and small applications needing book metadata price: 14.99 currency: USD period: month features: - Book search by ISBN, title, author, publisher - Up to 19 data points per book - Standard metadata fields - 7-day free trial limits: - name: Daily API Calls value: 1000 - name: Requests Per Second value: 1 - name: Bulk Results Per Call value: 10 - name: Academic description: Discounted plan for academic and educational use with standard data access price: 14.99 currency: USD period: month features: - All Basic plan features - Academic use discount limits: - name: Daily API Calls value: 2000 - name: Requests Per Second value: 1 - name: Bulk Results Per Call value: 10 - name: Premium description: Mid-tier plan with higher call volumes, all data fields, and bulk data access price: 35.99 currency: USD period: month features: - All data fields - Bulk data access (up to 1000 books per call) - Recent update feeds (7-day history) - All Basic plan features limits: - name: Daily API Calls value: 5000 - name: Requests Per Second value: 3 - name: Bulk Results Per Call value: 1000 - name: Pro description: High-volume plan with real-time prices, bulk data, and elevated call limits price: 99.99 currency: USD period: month features: - All data fields - Bulk data access (up to 1000 books per call) - Real-time book prices - Recent update feeds (7-day history) - Tech support - All Premium plan features limits: - name: Daily API Calls value: 15000 - name: Requests Per Second value: 5 - name: Bulk Results Per Call value: 1000 - name: Enterprise description: High-volume enterprise plan with all features including real-time pricing price: 299.99 currency: USD period: month features: - All data fields - Bulk data access (up to 1000 books per call) - Real-time book prices - Recent update feeds - Priority tech support - All Pro plan features limits: - name: Daily API Calls value: 50000 - name: Requests Per Second value: 10 - name: Bulk Results Per Call value: 1000