# kittinunf/fuel

The easiest HTTP networking library for Kotlin/Android

Repository: https://github.com/kittinunf/fuel
Canonical: https://ross.abutalabs.com/products/fuel
Homepage: https://fuel.gitbook.io/documentation/
Language: Kotlin
License: MIT
License Family: permissive
Topics: kotlin, rxjava, networking, android, http-client, rest
Last push: 2026-08-03T09:16:12+00:00

## Health v2 (maintenance only)
Score: 66/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 95, release rhythm 8, longevity 100
- inputs: {"age_days": 4108, "days_push": 30, "days_rel": 674, "gap_med": null, "n_releases_24m": 1}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 4647, forks 437 (observed 2026-08-28T04:08:55.560655+00:00)

## What it is
Fuel is a Kotlin-first HTTP networking library built on Kotlinx Coroutines, offering a fluent API for GET/POST/PUT/DELETE/HEAD/PATCH requests on JVM and Android, with multiplatform support for Apple platforms. It provides optional modules for deserialization (Gson, Jackson, Moshi, Kotlinx Serialization), coroutines, RxJava, LiveData, and Reactor integration.

## Use cases
- make HTTP requests from Kotlin with a fluent API
- call REST APIs from an Android app
- download files over HTTP in Kotlin
- upload multipart form data with files and blobs
- deserialize JSON responses into Kotlin data classes
- use coroutines for async networking in Kotlin

## When to choose
- you want a simple, idiomatic Kotlin HTTP client for Android or JVM
- you need coroutine-based async requests with optional RxJava/LiveData/Reactor adapters
- you want built-in deserialization modules and easy file upload/download

## When to avoid
- you need a fully stable 3.x release (currently alpha)
- you prefer Ktor client or Retrofit for more mature ecosystems
- you target Android below API 21 or Java below 8

## Facets
- artifact type: library
- maturity: active
- function: http-client, serialization
- domain: web-development, android-tools, developer-tools
- platform: jvm, cross-platform
- tags: kotlin, coroutines, rest-client, okhttp, multipart-upload, rxjava, android

## Member repositories
- kittinunf/fuel (main) score 66

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:08:55.560655+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 2026-08-29T18:19:31.609095+00:00, confidence not recorded.
  - readme: https://github.com/kittinunf/fuel (fetched 2026-08-28T04:08:55.560655+00:00, sha 7cd34c05ad22)
  - homepage: https://fuel.gitbook.io/documentation/ (fetched 2026-08-29T09:04:06.007113+00:00, sha b6b2bcead86e)
- Data as of 2026-08-30T08:39:29.467469+00:00.