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ghostdogpr/caliban

Functional GraphQL library for Scala
Source code at GitHub https://ghostdogpr.github.io/caliban/
ghostdogpr/caliban.json
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  "description": "Functional GraphQL library for Scala",
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  "homepage": "https://ghostdogpr.github.io/caliban/",
  "language": "Scala",
  "name": "caliban",
  "pushedAt": "2025-11-24T22:46:12Z",
  "stargazersCount": 975,
  "topics": [
    "functional-programming",
    "graphql",
    "graphql-client",
    "graphql-server",
    "scala"
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  "updatedAt": "2025-11-24T22:46:16Z",
  "url": "https://github.com/ghostdogpr/caliban"
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Caliban

Section titled “Caliban”

[![Release Artifacts][Badge-SonatypeReleases]][Link-SonatypeReleases] [![Badge-Discord]][Link-Discord]

[Link-SonatypeReleases] !: https://central.sonatype.com/artifact/com.github.ghostdogpr/caliban_3 “Sonatype Releases” [Badge-SonatypeReleases] !: https://img.shields.io/maven-central/v/com.github.ghostdogpr/caliban_3 “Sonatype Releases” [Link-Discord] !: https://discord.gg/2ccFBr4 “Discord” [Badge-Discord] !: https://img.shields.io/discord/629491597070827530?logo=discord “chat on discord”

Caliban is a purely functional library for building GraphQL servers and clients in Scala.

The design principles behind the library are the following:

  • minimal amount of boilerplate: no need to manually define a schema for every type in your API.
  • high performance: while every public interface is pure and immutable, library internals have been optimized for speed.
  • clean separation between schema definition and implementation: schema is defined and validated at compile time using Scala standard types, resolver (RootResolver) is a simple value provided at runtime.

Consult the Documentation to learn how to use Caliban.

Section titled “Consult the Documentation to learn how to use Caliban.”

Any questions? Head up to the #caliban channel on ZIO Discord.

Section titled “Any questions? Head up to the #caliban channel on ZIO Discord.”

Adopters

Section titled “Adopters”

Here is a partial list of companies using Caliban in production.

Want to see your company here? Submit a PR!