Servant provides a type-level domain-specific language (DSL) in Haskell for describing web APIs. From a single API specification, developers can derive server implementations, client libraries, documentation, and more—ensuring consistency and type safety across the stack.

Features

  • Defines APIs at the type level for compile-time consistency
  • Derives server handlers, clients (Haskell and other languages), and docs from the same spec
  • Extensible with custom combinators and interpretations
  • Ensures request/response marshalling matches Haskell types
  • Used in production by companies like GitHub, Klarna, and IOHK (Cardano)
  • Supports static documentation generation and mocking via API descriptions

Project Samples

Servant Screenshot 1

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Additional Project Details

Programming Language

Haskell

Related Categories

Haskell Libraries

Registered

2025-09-04
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