DeepSeek Harness install: npx vs global vs desktop app

There are three ways to get DeepSeek Harness itself: npx with no install, npm install -g for a permanent global command, and a desktop app with its own runtime (source). This is not a step-by-step guide to one path but a side-by-side comparison: what each path is, how they weigh across five dimensions, and which one fits which scenario.

Overview: the three DeepSeek Harness install paths in one table

Remember the one-line difference: npx leaves no trace, global stays put, desktop bundles its own environment. Comparison:

Once the table clicks, the comparison and the selection below follow naturally.

What each DeepSeek Harness path is: no-install, global, and a standalone client

1. npx, no install — npx @deepseek-ai/dsh web fetches and runs DeepSeek Harness on the fly without writing to PATH, then leaves nothing behind (source). Expected: you reach the UI without installing anything. Details: How to use npx @deepseek-ai/dsh web.
2. Global npm install — npm install -g @deepseek-ai/dsh installs the dsh command into a global location and adds it to PATH, so any directory can run dsh web. Expected: dsh --version prints a version. Steps: Global dsh install.
3. Desktop app — download the installer from the official site for a standalone client whose UI loads over an in-app protocol and that bundles Node, pnpm, and Python runtimes (source). Expected: double-clicking the icon opens the UI. See DeepSeek Harness desktop download.

Head-to-head: five dimensions to weigh across the three DeepSeek Harness paths

Of the five dimensions, only two really drive the choice—whether it should stay installed and whether your network is restricted—and the rest follow.

A few notes:

1. Version freshness: npx takes the latest npm version on every run and never falls behind; a global install only upgrades when you run npm update -g @deepseek-ai/dsh; the desktop app uses its own update channel.
2. System changes: npx writes nothing to PATH, which suits zero-trace scenarios; a global install leaves one command, removed with npm uninstall -g @deepseek-ai/dsh; the desktop app adds a bundled runtime, costing disk but saving environment setup.
3. Offline / intranet: both npx and a global install pull packages over the network and fail on a pure intranet; the desktop app is largely self-contained once installed. See Offline install and intranet deployment.
4. Data location is identical: whichever path you take, sessions, settings, and credentials land in the same $DSH_HOME (default ~/.dsh), so switching paths does not mean re-configuring models; only the executable layer and the plugin profile differ.

How to choose a DeepSeek Harness install path: one-off trial, daily use, or a restricted network

Match the scenario rather than chasing "the best"—the three paths exist for three kinds of users.

1. Just trying it → npx. One npx @deepseek-ai/dsh web runs it with no trace. Expected: the UI in minutes, nothing left behind on exit.
2. Using it in a terminal every day → global install. Install once, then dsh web starts instantly and dsh plugin is easy to script. Expected: both plugins and commands can be scripted. Full path: Complete install guide.
3. Always-on desktop software without environment setup → desktop app. The bundled runtime removes Node / pnpm / Python configuration. Expected: double-click and go, zero environment work.
4. Intranet or restricted network → offline distribution, never npx. Expected: it installs without internet.

Whichever path you take, extending DeepSeek Harness afterward happens in the same place: search, install, and compare plugins at DSH Plugin Hub, since the plugin system is independent of how you installed the app.

Notes on installing DeepSeek Harness

1. npx downloads every time: the price of no-install is a slow first start, obvious on a poor network, so do not make it your daily entry point.
2. Watch your Node version for a global install: it uses the system Node, and too old a version hits environment trouble first, so confirm Node and the package manager work beforehand.
3. The desktop app does not take commands: its profile is its own and the CLI does not drive it, so install plugins in the matching environment.
4. Do not reconfigure data: all three paths share one $DSH_HOME, so no migration is needed when switching, but check scope before cleaning it.
5. Updates run on two tracks: updating the app (npx / global / desktop differ) and updating plugins (all via the marketplace) are separate concerns.

Sources: dsh CLI README, npm - @deepseek-ai/dsh, DeepSeek Harness desktop README