DeepSeek Harness Quick Start - From Launch to Plugin Development
This is the DeepSeek Harness usage archive. From a single command to understanding the architecture and building your own plugins, every step is laid out — pick a path and walk in.
Quick Start: Launch in One Command
Start the Web UI with npx, or build from source — learn the launch command, the default address, and prerequisites.
Read the guide →Using the Web UI
Configure a model, pick a workspace, run your first task, and see how the agent reads files, runs commands, and delegates.
Read the guide →Architecture & Design
How everything-is-a-plugin actually works: Cordis, profiles and bundles, four run modes, traceable sessions, and seams.
Read the guide →Developing Plugins
Learn Cordis plugin loading/unloading, services and events, and the extension points for adding new capabilities to dsh.
Read the guide →FAQ & Troubleshooting
How to debug launch, model setup, workspaces, approval, and compatibility issues.
Read the guide →Prefer to jump to a topic?
The sidebar's "Getting Started / Deep Dive / Troubleshooting" groups each topic: quick start, Web UI, architecture, plugin development, and FAQ.
Version note
DeepSeek Harness is currently a developer preview (v0.1) iterating rapidly — there will be compatibility-breaking changes. This guide follows the official README and docs; if anything differs, the official docs win.
Get Started
One command,
and your agent harness is running.
Whether you want to see it run first, or dive into the architecture and build your own plugins,
this path is worth walking.