APXM

A browser extension for Prosperous Universe that provides a mobile-optimised touch interface. APXM observes WebSocket traffic and displays your empire status auto-magically.

Part of the 27Bit Industries tool suite for Prosperous Universe.

Features

Overlays the APEX mobile interface with a touch-focused UI while the underlying game client keeps running.

• Status dashboard — at-a-glance summaries of bases, fleet, contracts and burn rates.
• Notifications — a bell in the header with an unread count opens a full NOTS list. Alerts colour-coded type labels (like rPrUn) and a material tiles. Action buttons to open the associated APXM detail panel.
• Base status — BURN / REPAIR / PROD indicators per base: days of supplies remaining, days since last repair and production utilisation.
• Burn tracking — per-base material burn rates with urgency indicators (critical/warning/ok). Purchase need calculation with configurable resupply targets.
• Fleet overview — ship status, destinations, ETA countdowns, cargo and fuel.
• Ship actions — unload, refuel, load cargo through a capacity-aware picker and send ships with tappable reactor and fuel-usage controls. NO SLIDERS >:|
• Contract monitoring — active contracts with condition status, deadlines and locations.
• Contract actions — ACCEPT / REJECT / FULFILL from the contract sheet.
• Company & liquidity — company identity and cash balances with configurable preferred-currency.
• Staleness indicators — data surfaces show their source (live WebSocket / FIO / cache) and age.
• UI themes — five presets shared with Helm (PrUn, DryDock, CRT, Vivid, Colorblind), including a CVD-safe burn status palette.
• FIO integration — auto-fetches data from the FIO REST API on startup if credentials are configured.
• Buffer refresh — per-base data refresh without switching back to APEX.

How It Works

Install the extension, open prosperousuniverse.com and log in as normal. On a touch device APXM takes over the screen; the APEX client keeps running underneath. SHOW APEX in the header drops you back to the game's own UI at any time.

Technical Stuff

APXM intercepts the WebSocket connection between APEX and the game server using a main-world content script injected before PrUn loads. Messages are decoded through Socket.IO's double-encoding layer (engine.io + socket.io framing) and fed into typed Zustand stores. The React overlay renders from those stores.

The interception and message bus code lives in @prun/link, a shared library from the 27Bit toolset (currently private).

APEX <-> Game Server (WebSocket/Socket.IO)
          | (observed, never modified)
     @prun/link decoder
          |
     Zustand stores
          |
     APXM React UI

Platforms

Platform	Browser	Notes
iOS / iPadOS	Orion (Kagi)	Install via the AMO listing
Android	Firefox	Install via the AMO listing
Android	Kiwi	Install via the Chrome Web Store

Install

Firefox (Android) and Orion (iOS): Firefox Add-ons (AMO)

Chrome and Kiwi (Android): Chrome Web Store

Release history: CHANGELOG.md · GitHub Releases

Build From Source

Requires Node.js 22+ and pnpm 10+ (corepack enable picks up the pinned version).

Note: the @prun/link dependency is currently a private repository, so building from source is limited to collaborators for now. The AMO listing includes the reviewed source bundle for each release.

pnpm install
pnpm run build            # Chrome MV3 -> .output/chrome-mv3/
pnpm run build:firefox    # Firefox MV2 -> .output/firefox-mv2/
pnpm run test             # Run test suite

Development

pnpm run dev              # Chrome with hot reload
pnpm run dev:firefox      # Firefox with hot reload

Package for Distribution

pnpm run zip              # Chrome zip
pnpm run zip:firefox      # Firefox zip + sources zip (for AMO)

Feedback

Found a bug or have a feature idea? Open an issue

Tech Stack

• WXT — cross-browser extension framework (Vite-based)
• @prun/link — shared WebSocket interception library (private)
• React 19 + TypeScript
• Zustand — state management
• Tailwind CSS — mobile-first styling
• Vitest — unit tests

Acknowledgments

APXM is inspired by and built on the shoulders of giants — it wouldn't exist without the work that came before it.

Refined PrUn (rprun) — APXM's understanding of APEX's internal message protocol, DOM structure, and buffer management draws from rprun's prior work.

FIO (Prosperous Universe Community API) — FIO provides the game data (materials, buildings, recipes, planet data, exchange prices) that makes tools like APXM, Helm and others possible.

jackinabox86 — the repair and production status engines, the ACT action engine and the mobile buffer navigator are adapted from his APXM fork.

License

MIT