DeepSeek Harness v0.2 ships desktop apps with npm-based plugins

DeepSeek released a preview of DeepSeek Harness v0.2 on September 29, 2026, and for the first time the tool ships as a desktop application. Installers for both macOS and Windows were published alongside the release. Users download them from the official site at deepseek.com/harness, run the installer and follow the on-screen setup — no command-line work required, according to a report published the following day.

The release is framed around out-of-the-box use for everyday office work and development. Rather than leaving users to assemble capabilities themselves, v0.2 bakes commonly needed ones directly into the product. The report says users can hand it documents, spreadsheets or PDF files to work on.

Plugins work differently in this version too. Instead of a bespoke marketplace or manual file placement, plugins are installed by npm package name. The version also supports letting the AI write plugins on its own.

The account comes from a single outlet, OSChina (开源中国), on September 30, 2026, and no other reporting is available to cross-check it. Nothing has been said about whether a stable v0.2 will follow the preview, which macOS or Windows versions the desktop packages target, or how far the AI-written plugin capability extends. The details above — the September 29 preview date, the two desktop installers, preinstalled handling of documents, spreadsheets and PDFs, npm-based plugin installation and AI-authored plugins — are everything the available material covers.