# slackhq/circuit

⚡️ A Compose-driven architecture for Kotlin and Android applications.

Repository: https://github.com/slackhq/circuit
Canonical: https://ross.abutalabs.com/products/slackhq-circuit
Homepage: https://slackhq.github.io/circuit/
Language: Kotlin
License: Apache-2.0
License Family: permissive
Topics: architecture, compose, kotlin, android, mvi, udf
Last push: 2026-08-26T17:43:02+00:00

## Health v2 (maintenance only)
Score: 99/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 99, longevity 100
- inputs: {"age_days": 1485, "days_push": 7, "days_rel": 7, "gap_med": 27.5, "n_releases_24m": 21}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 1848, forks 120 (observed 2026-08-28T04:05:44.134606+00:00)

## What it is
Circuit is a Compose-driven architecture framework for Kotlin applications, primarily targeting Android. It pairs Compose-based Presenters and UIs that communicate only through state and events, following unidirectional data flow (UDF/MVI) principles.

## Use cases
- structure an Android app with MVI architecture in Jetpack Compose
- separate presenters from UIs using unidirectional data flow
- manage app screens with a Compose-first presenter pattern
- build Kotlin apps using the Compose runtime for state management
- replace MVVM with a UDF architecture in Compose
- implement nested and composite screens in a Compose app

## When to choose
- you are building an Android app with Jetpack Compose and want a proven UDF/MVI architecture
- you want presenter/UI separation backed by the Compose runtime
- you value a framework used in production at Slack

## When to avoid
- you are not using Kotlin or Jetpack Compose
- you prefer XML views or non-Compose Android architectures
- you need an iOS-first or non-JVM framework

## Facets
- artifact type: framework
- maturity: stable
- function: state-management, frontend-framework, ui-components
- domain: mobile-development, android-tools, web-development
- platform: jvm
- tags: compose, mvi, unidirectional-data-flow, architecture, presenters, kotlin-multiplatform, android

## Member repositories
- slackhq/circuit (main) score 99

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:05:44.134606+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T03:17:49.233301+00:00, confidence not recorded.
  - readme: https://github.com/slackhq/circuit (fetched 2026-08-28T04:05:44.134606+00:00, sha 67020428f89c)
  - homepage: https://slackhq.github.io/circuit/ (fetched 2026-08-29T10:56:26.629607+00:00, sha f644dde7cbe7)
- Data as of 2026-08-30T08:39:29.467469+00:00.