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This book teaches you how to build production-quality web applications and REST APIs using the Servant framework in Haskell. Starting from foundational Haskell concepts, it guides you through type-level API design, database integration, authentication, testing, and deployment. By the end, you will have built a complete versioned REST API with PostgreSQL persistence, JWT authentication, structured error handling, automated tests, and Docker configuration that demonstrates all the patterns used in real-world Servant applications.

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Kick off your book project, get started with GhostAI, get better at marketing, or spend the day doing all three! Free live workshops on Zoom. Saturday, June 27, 2026.

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