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Xolo API Hub is a premium, open-source API client built entirely in Flutter for Android and iOS. Developers and power users who need to test, debug, and automate HTTP workflows while away from their desks no longer have to reach for a laptop — Xolo brings the full depth of a desktop tool like Postman directly to your phone. From composing multi-part requests to running entire collections with scripted assertions, Xolo keeps your workflow intact whether you’re on a train, in a meeting, or on-call at 2 AM.

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Key Features

Request Composer

Build HTTP requests with a full-featured editor supporting JSON bodies, custom headers, query parameters, and dynamic path parameters (:param) detected automatically from your URL.

Collections & Environments

Organise requests into nested collections and folders. Swap between named environments (Dev, Staging, Production) without touching a single URL.

Pre/Post Scripts

Run pre-request scripts to inject dynamic values ({{$timestamp}}, {{$guid}}, {{$randomInt}}), and extract values from responses with JSONPath for chained-request automation.

Collection Runner

Execute an entire collection in sequence, view a live pass/fail report per request, and browse the full run history at any time.

OAuth 2.0

Native Authorization Code flow support with an embedded ephemeral local server for secure token exchange — no copy-pasting tokens from a browser.

Biometric Protection

Lock your workspace and sensitive API keys behind device-native biometrics (Face ID or fingerprint). Auto-lock policies trigger on app resume.

Postman / OpenAPI Import

Import existing Postman collections or OpenAPI specs to get started immediately without re-entering every endpoint by hand.

Cloud Sync & Incognito Mode

Sync your collections and environments across devices with encrypted Google Drive backup. Use Incognito Mode to prevent sensitive requests from appearing in history.

Android Home Widget

Pin a quick-launch widget to your Android home screen to fire favourite requests or open the composer in one tap.

Real-Time Variable Highlighting

Every {{variable}} and :parameter lights up inline across all input fields so you always know which values are dynamic at a glance.

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Tech Stack

Xolo is built on a modern, production-grade Flutter dependency set. Every library was chosen for reliability and long-term maintenance. Additional notable packages include local_auth for biometrics, flutter_secure_storage for encrypted key storage, home_widget for the Android widget, google_sign_in + googleapis for Drive sync, and encrypt / crypto for client-side encryption.

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Architecture Overview

Xolo follows a strict four-layer architecture that keeps UI code free of database concerns and makes the codebase easy to test at every level.
  • Core — Cross-cutting infrastructure: the go_router configuration, app themes, secure storage helpers, the Dio HTTP client, and the AppLogger service.
  • Domain — The stable contract layer. XoloRepository defines every data-access operation as an abstract interface. Domain entities and their mappers from raw Drift rows live here, completely isolated from SQLite specifics.
  • Data — Concrete implementations: the Drift database definition, XoloRepository implementations, and service classes for import (Postman/OpenAPI) and cloud sync.
  • Presentation — All screens, widgets, and Riverpod providers. Screens access data exclusively through xoloRepositoryProvider, which resolves to the data-layer implementation. No screen ever touches a Drift $Table object directly.
XoloRepository is the explicit boundary between presentation and data. This separation means every screen can be tested against a fake in-memory repository without spinning up SQLite.

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Platform Support

Xolo is currently in Release Candidate 1 (RC1). You can download the latest app-release.apk directly from the GitHub Releases page and install it on any Android device today.

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Where to Go Next

Quickstart

Install the APK, create your first environment, and send a live request in under five minutes.

Request Composer

Deep-dive into headers, body types, path parameters, and real-time variable highlighting.