What’s New in DeepSeek Harness v0.2: Desktop Apps, Plugins and Automations

DeepSeek Harness v0.2 brings the open-source agent framework beyond its earlier terminal-led setup with official macOS and Windows desktop installers. The September 29, 2026 preview also adds plugin management, scheduled automations, and clearer ways to inspect files and code changes. It remains a preview, so the new desktop experience should not be mistaken for a stable final release. 11535

What’s new in Harness v0.2

Desktop installers lower the setup barrier

The earlier developer preview was launched from a terminal. With v0.2, DeepSeek introduced official desktop installers for macOS and Windows, giving users a graphical way to get started instead. The project is still labeled a preview, however, and its open-source repository warns that it is evolving and may have compatibility-breaking changes. 115

Plugin management and experimental creation

The update adds a plugin installation and management page, along with more configuration options. Reports on the preview describe controls for installing, disabling, and removing plugins, and for viewing plugin information and sources. 57 A report also describes an experimental creation mode in which users can ask Harness to write or modify a plugin; DeepSeek’s product page likewise says plugins can be created through chat. 78

Plugin actions deserve care: Harness’s tool documentation says plugin-management actions can require elevated permission or approval, and package installation may run permitted build scripts. 21 That is a reason to review what a plugin does and where it comes from before installing it—not a guarantee that every plugin is safe.

Scheduled work and clearer task monitoring

Users can enable an automation plugin to schedule recurring tasks, review run records, and adjust a task’s instructions or frequency. The update also improves ways to follow an agent’s work, making it easier to see progress and execution steps. 57

File previews and code-change displays

Harness v0.2 is designed for everyday office and development work. Reporting on the release describes improvements to file display and content previews, as well as clearer presentations of code changes. Users can inspect outputs and changes in the app and continue refining work through conversation. 57

What changed from the earlier developer preview?

The main shift is accessibility: the earlier version required terminal-based setup, while v0.2 offers official desktop installers for macOS and Windows. The broader idea remains the same: Harness is an open-source agent framework built around plugins. The update adds a more approachable way to run it and manage some of those extensions, but it does not mean the project has left preview status. 11315

What DeepSeek has said about plugin use

Coverage of the team’s announcement reports that about 60% of Harness users use third-party plugins, with the reported measure described as applying to model-API users. This is a Harness-specific figure, not a claim about all DeepSeek users; the cited reporting does not specify a measurement period. 6

What improvements are planned next?

Reporting on DeepSeek’s introduction lists work the team intends to pursue, including improvements to sandbox features and security, agent teams, personalized long-term memory, browser and other graphical-app automation, remote and mobile access, and session sharing or collaboration. These are described as areas for future work, not as features already delivered or a guaranteed release schedule. 7

For now, v0.2’s clearest change is the move from a terminal-first developer preview toward a desktop app, accompanied by plugin controls, recurring-task support, and improved visibility into agent output. Because Harness remains a preview, users should treat its features and compatibility as evolving. 115