DS4 Control

A macOS menu bar pane for DeepSeek V4 and V4.1 via dwarfstar.

It launches, supervises, and monitors a local ds4 server, lets you pick V4.1 Flash, V4 Pro (0813), or V4 Flash (0731) with up to 1M context, and shows resource use.

Launch Pi, Claude Code or BYOC (Bring Your Own CLI) for local agentic coding.

Signed with a live Apple Developer ID & notarized by Apple

Quick Install

brew install --cask ds4-control

Features

• Start / stop / monitor the local ds4-server child process — spawn, stderr readiness detection, health polling, graceful stop, and crash detection.
• Pro / Flash selector with a RAM feasibility checks.
• Model downloads via a built-in native parallel downloader, with a live progress bar and resume across restarts.
• Mini resource widgets: unified memory, GPU, power, and CPU, sampled on a timer.
• Launch Chat to talk to the model.
• Launch Claude Code or Pi to plan, write, maintain or refactor code.
• 1M Context configurable in settings.
• Launch on macOS Startup

What it is not:

• No model search or registry browsing.
• No embedded inference — all inference is delegated to ds4-server.

Dev quick start

antirez/ds4 is vendored as a git submodule at external/ds4:

git submodule update --init --recursive    # fetch ds4 into external/ds4
bash scripts/apply-ds4-patches.sh           # THINK_MAX prefix (antirez/ds4#635)
make -C external/ds4 -j ds4-server          # build the ds4-server binary
DS4_DIR="$PWD/external/ds4" swift run        # build + run the dev app against the submodule

Requirements

• Apple Silicon
• You don't pre-download the model — DS4 Control downloads it for you with a built-in parallel downloader, resumable across restarts.
• Auth (optional): the model repository is public, so no token is required for normal use.
• RAM — see below.

RAM feasibility

DeepSeek V4 is memory-hungry so DS4 Control gates feasibility before launching.

Performance

Measured single-stream generation throughput on a Mac Studio M3 Ultra (512 GiB):

Varies with context length, prompt, and the Metal wired limit.

Coding Agents

It’s suggested to follow the ds4 coding agent setup guide to configure your OpenCode/Claude/Codex/Pi as you prefer.

Build & Run

For development:

swift run

To produce a distributable bundle:

bash build.sh

This builds a release binary and assembles DS4 Control.app.

First run: open Settings (the gear in the popup) and set the ds4 directory — the folder that contains ds4-server.

Signing

build.sh auto-detects your Apple Development identity via security find-identity and signs the bundle with it. If no Apple Development identity is installed, it falls back to ad-hoc signing (the app runs locally but is not distributable).

To sign with your own key:

• Install an Apple Development certificate (Xcode → Settings → Accounts → Manage Certificates → + → Apple Development), or
• Set DS4_SIGN_IDENTITY="Apple Development: …" before running build.sh.

How it works

DS4 Control is a single Swift binary — no embedded inference and no second process language. Three @MainActor objects do the work, and the SwiftUI layer just observes them:

• SupervisorService owns the ds4-server lifecycle through Foundation.Process: it builds the launch arguments, watches stderr for the listening on http:// readiness line, polls GET /v1/models for health, and stops gracefully with SIGTERM (SIGKILL fallback). Model weights are fetched by a built-in native parallel downloader (resumable across restarts).
• MetricsManager samples CPU, memory, GPU, and power/ANE via Mach, IOKit, and the private IOReport interface every 2 s, publishing a SystemSnapshot to the widgets.
• Feasibility turns installed RAM into a variant choice and a budget-derived default context (pure, fully unit-tested).

Attribution

• A big thanks of course to @antirez for antirez/ds4, llama.c and GGML for instrumental foundational work.
• The resource collectors and widgets are adapted from mac-resource-monitor, which in turn credits macmon (MIT) for the IOReport power-sampling approach.
• The server-supervision pattern is built on the lineage of mlx-serve.

License

MIT — see LICENSE.