Tianyi Cui
cbb5fc7a51
One tiny recorded text turn drives three whole-page concerns: - workspace flow over the real wire: the empty-state hero's first send materializes a real Workspace + Session (the jsdom workspace-flow suite pins this state machine over the fixture client; this scenario pins it through HTTP RPC + SSE + the gateway). Durable proof: the session header's cwd is the create-by-name target <workspaceRoot>/workspace. Adds the hero waiting-state aria golden. - reload recovery: collapse the sidebar (persisted dsh.layout.panels), page.reload, and the surface comes back whole from persistence alone — layout collapsed, selection restored (dsh.sessions.current), the recorded turn re-rendered from session.history with zero model calls (the drained replay cursor makes any stray request fail loud at close). - dark mode: no product control flips the theme yet, so the scenario drives the ThemeService's entire DOM contract — body[data-ds-dark-theme] — and pins the shipped cascade: the alias token flips, a painted surface repaints, and removing the attribute restores the light sample exactly. TODO(web-theme-gesture) upgrades to a real settings control; no theme golden per the lane's scope ruling (aria is color-blind). Agent Note scenario list extended in both languages; pairing re-recorded.
DeepSeek Harness
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DeepSeek Harness (dsh) is an open-source coding agent built on the DeepSeek Harness SDK.
It uses an architecture where everything is a plugin.
Install
Install dsh with one command:
curl -fsSL https://raw.githubusercontent.com/deepseek-harness/deepseek-harness/master/scripts/install.sh | sh
The installer requires git and Node ^22.19 || >=24, offers to install pnpm when it is missing, and prompts for a DeepSeek API key.
The installer clones DeepSeek Harness to ~/.dsh/source, links dsh into ~/.local/bin, and launches it. Re-running the command updates the checkout. See scripts/install.sh for alternate install locations and other options.
Use DeepSeek Harness
Web UI
For the recommended local interface, build the frontend after installation and after each update, then start the Web UI:
pnpm --dir ~/.dsh/source run build && pnpm --dir ~/.dsh/source run build:web
dsh web
The Web UI is served at http://127.0.0.1:3080 by default.
TUI
Start the full-screen terminal interface:
dsh
Headless
Run one task, print the final answer, and exit:
dsh -p "summarize this workspace"
Why DeepSeek Harness
Built-in capabilities cover file reading, editing, and search; shell execution; reusable skills; task tracking; subagents and workflows; persistent sessions; and context compaction. The TUI also includes Plan Mode.
- Everything is a plugin. Models, tools, policies, storage, context management, and interfaces are composable Cordis plugins, so deployments can extend or replace behavior without forking the agent loop. See the architecture for the underlying design.
- Code Mode (opt-in). It exposes a
run_codetool and a generated TypeScript SDK; only program output re-enters model context. See Code Mode. - Self-referential Cordis tools are opt-in. They let the agent inspect its live runtime and mount or unmount plugins while it runs. See the Cordis tools.
Community
Follow DeepSeek Harness on Twitter for project updates.
Development
pnpm install
pnpm run test:coverage
Start with the development guide and read the architecture before changing packages.
For agents, follow AGENTS.md.
DeepSeek Harness is currently pre-release.