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DeepSeek Harness

DeepSeek Harness saves pages into your Showspace from its local Web UI, and a short patch file gives it all twenty of the app's commands.

DeepSeek Harness, or dsh, is DeepSeek's open-source agent runtime. Models, tools, skills and even the interface are plugins you can swap, so it suits developers who like to configure and extend their tools.

On a Mac it runs as a Node.js process with a Web UI in your browser. Before a session starts you choose a workspace folder, and the agent reads, edits and runs commands there.

Made byDeepSeek
Runs onmacOS, through Node.js 22.19.0 or newer within version 22, or Node.js 24 and later
Where pages goInto the workspace folder you choose on your Mac
App commandsYes, all twenty
Standing instructions~/.dsh/AGENTS.md, or a project's own AGENTS.md or CLAUDE.md
CostFree and open source; you add a model API key, such as a DeepSeek key
Also calleddsh, DSH Web UI

Set it up

  1. In lite.computer, click your name at the bottom of the sidebar and open the Agent Helper. Copy the paragraph it gives you and paste it into ~/.dsh/AGENTS.md, which every session reads.
  2. Merge the patch below into ~/.dsh/cordis.patch.yml to connect every profile. Keep any patches already in the file.
  3. Start the Web UI with the line below, open http://127.0.0.1:3080 in your browser, and add a DeepSeek API key under Settings, then Models.
  4. Choose your Showspace as the workspace. Keep lite.computer open on your Showspace, start a new DeepSeek Harness session and ask Use the lite.computer tool to list every page in my Showspace. It lists the pages in your folder.
cordis.patch.yml entry

- insert: - id: lite-computer name: '@deepseek-ai/dsh-mcp-client' config: serverName: lite-computer transport: streamable-http url: http://127.0.0.1:48484/mcp

Run in a terminal

npx @deepseek-ai/dsh web

Try this prompt

Paste into DeepSeek Harness

Read the HTML pages in my Showspace and build an interactive catalog: a searchable list grouped by topic, expandable summaries, and an animated chart of how many pages are in each group. Save it as a single self-contained HTML file named showspace-catalog.html in my Showspace, then open it in lite.computer.

Good to know

  • DeepSeek's scheduling patch adds scheduled work. Turn it on and keep the harness running with the session open, and a regular report lands in your Showspace on its own.
  • Besides AGENTS.md, it reads CLAUDE.md in a project, so instructions you already keep for another agent carry over. More on the paragraph itself is in The Agent Helper.
  • We have not tested DeepSeek Harness with lite.computer ourselves. These instructions are based on research. Try saving one HTML page to your Showspace first. If a step needs correcting, email hello@lite.computer.

Questions

Does DeepSeek Harness work with lite.computer?

Yes. Running on your Mac, it saves HTML pages into your Showspace, and lite.computer shows each one as it lands. With the MCP entry in its patch file, it also opens pages and arranges windows in the app.

How do I run DeepSeek Harness on a Mac?

Run npx @deepseek-ai/dsh web in a terminal and open http://127.0.0.1:3080 in your browser.

Where does the lite.computer instruction go for DeepSeek Harness?

In ~/.dsh/AGENTS.md for every session. For one project, use an AGENTS.md or CLAUDE.md in that project's folder.

Choosing between agents? See Which AI works with lite.computer.

Last checked September 14, 2026.

Still stuck? Write to support@lite.computer.