circe/circe
Yet another JSON library for Scala observed · 2026-08-28
Health v2 · maintenance only
90/100
- Activity 94
- Release rhythm 78
- Longevity 100
How is this computed?
round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10) — computed 2026-09-02. Adoption (stars, forks) is never an input.
- gap_med: 80.5
- age_days: 4051
- days_rel: 70
- days_push: 41
- n_releases_24m: 7
Adoption not part of the score
2542 stars · 546 forks observed · 2026-08-28
What it is AI-extracted, prompt v1, taxonomy v1, 2026-08-30, confidence not recorded
circe is a JSON library for Scala and Scala.js providing a JSON AST, encoders/decoders (codecs), and automatic derivation for case classes and sealed traits. It builds on cats and uses Jawn or Jackson for fast parsing and printing.
Use cases
- serialize case classes to JSON in Scala
- parse JSON responses into typed Scala models
- auto-derive JSON codecs for case classes and sealed traits
- handle JSON in Scala.js browser apps
- high-throughput JSON processing in Scala services
When to choose
- you're writing Scala or Scala.js and need idiomatic, type-safe JSON handling
- you want automatic codec derivation without runtime reflection
- you need fast parsing for high-throughput services
- your project already uses cats
When to avoid
- you're not on the JVM/Scala ecosystem
- you need a minimal JSON library without cats dependency
- you work in a non-Scala JVM language like Java or Kotlin
Facets
library · maturity stable
serialization parser developer-tools web-development apis jvm wasm scala codec-derivation cats scala-js
3 sources
- readme: https://github.com/circe/circe · fetched 2026-08-28 · b9b212dd417f
- homepage: http://circe.io/circe/ · fetched 2026-08-29 · 740a53098268
- site_page: http://circe.io/circe/quickstart.html · fetched 2026-08-29 · eecc60b97310
Member repositories
| Repository | Role | Health v2 |
|---|---|---|
| circe/circe | main | 90 |
For agents
Data as of 2026-08-30T08:39:29.467469+00:00 · Report a problem