servant-client

automatical derivation of querying functions for servant webservices

http://haskell-servant.github.io/

Version on this page:	0.2.1@rev:4
LTS Haskell 23.24:	0.20.2@rev:2
Stackage Nightly 2025-05-28:	0.20.2@rev:2
Latest on Hackage:	0.20.3.0

See all snapshots servant-client appears in

BSD-3-Clause licensed by Alp Mestanogullari, Sönke Hahn, Julian K. Arni

Maintained by [email protected]

This version can be pinned in stack with:servant-client-0.2.1@sha256:a0037c25ba6a332a0dd7d48c0b3470aa30f57831796f1dbc53599d308e9cb377,2268

Module documentation for 0.2.1

Servant
- Servant.Client
- Servant.Common
  - Servant.Common.BaseUrl
  - Servant.Common.Req

Depends on 14 packages(full list with versions):

aeson, attoparsec, base, bytestring, either, exceptions, http-client, http-types, network-uri, safe, servant, string-conversions, text, transformers

This library lets you derive automatically Haskell functions that let you query each endpoint of a servant webservice.

Example below.

type MyApi = "books" :> Get [Book] -- GET /books
        :<|> "books" :> ReqBody Book :> Post Book -- POST /books

myApi :: Proxy MyApi
myApi = Proxy

getAllBooks :: BaseUrl -> EitherT String IO [Book]
postNewBook :: Book -> BaseUrl -> EitherT String IO Book
(getAllBooks :<|> postNewBook) = client myApi