When npx @deepseek-ai/dsh web or git clone for DeepSeek Harness hits npm/GitHub timeouts or TLS failures, stabilize egress, then retry the same command. KuaiLian is a VPN connector that can improve the path to registries and repos; it does not replace Node version, registry mirror, permission, or port debugging. Connected ≠ guaranteed Harness install. Authoritative pages: deepseek.com/harness and deepseek-ai/deepseek-harness. This is a developer preview—not an APK.
Someone pasted the official one-liner npx @deepseek-ai/dsh web and watched the progress bar freeze on @deepseek-ai/dsh. Three different errors rotated: ETIMEDOUT, getaddrinfo, TLS. They reinstalled Node, cleared the npm cache, and still died mid-download. After egress settled, the same command finished and the local UI landed on the documented 127.0.0.1:3080. The missing piece was not a magic flag—it was splitting “path is jittery” from “this machine’s toolchain is wrong.”
This page only splits “fetch/clone egress unstable” from “still fails after the tunnel is up.” KuaiLian won’t connect → connection fixes; connected but no internet → connected, no internet. Do not rewrite Harness install failures as node-speed stories.
What Harness is—and which layer KuaiLian sits on
DeepSeek Harness (public quick start often shown as npx @deepseek-ai/dsh web) is a developer-facing agent runtime preview: a local Web UI where models, tools, and sessions compose as plugins. It is not an IM client and not a phone installer.
- Harness: local developer preview; needs Node, npm/registry, optionally a git clone of the source
- KuaiLian: builds a usable egress tunnel; does not explain npm errors and does not ship dsh
Stacking them is fine when the path is shaky: stabilize the network, then run the official command. Stacking them into “guaranteed install” is not—preview deps and ports move; trust the repo README.
Which npx / git clone failures look like network
Goal: tie the failure to egress—not measure node speed, and not invent “country X installs Harness better.”
- The same command repeatedly stalls in the download phase with timeout, ECONNRESET, certificate, or getaddrinfo
- The browser can load pages while the terminal still fails on registry.npmjs.org or github.com (or the reverse)
- The same machine suddenly succeeds in a calmer window—more like path jitter than permanently broken Node
If the error names unsupported engine, missing execute permission, port in use (EADDRINUSE), or package 404, leave the “swap routes” mindset and stay on local contrasts.
Stabilize the path, then retry—one variable class at a time
1. Confirm KuaiLian status
Client shows Connected and the system VPN icon remains; status flips → reconnect loop first.
2. Retry the same command once
Do not also flip registry, wipe cache, and change Node in one pass. After the path settles, only rerun npx @deepseek-ai/dsh web or clone.
3. Contrast clone vs npx
npm times out but git clone https://github.com/deepseek-ai/deepseek-harness works (or the reverse)—often a registry-path issue, not “the whole device is offline.”
4. Keep the terminal text
Capture the full error (mask tokens). “Won’t install” without a stack wastes the next debugging hour.
Installer and platform entry points stay on the KuaiLian download page; when menus disagree with old screenshots, verify the current client build first.
Still failing after connect: Node, registry, port—your job
The tunnel is only a precondition. None of the following auto-heal because the VPN shows Connected:
- Node version: match the engine range in the official README; too old or too new can refuse outright
- npm registry: wrong mirror, corporate proxy certs, lockfile clashes—show up as 404 or integrity failures, not “slow nodes”
- Local port: docs often cite
127.0.0.1:3080; free the port or follow the current README for alternatives - Permissions / sandbox: managed-device policies that block child processes or write to read-only paths abort npx mid-run
Honest boundary: this page does not teach policy bypasses and does not promise any preview build will succeed on your machine in one shot. Commands and default ports follow the official pages.
After the local UI is up, don’t treat it as public team chat
The Harness Web UI typically binds to loopback for developer trials of trajectories and plugins. Port-forwarding it to the public internet as a team inbox exceeds the product framing and widens exposure. Sensitive, E2EE collaboration belongs in a real messenger—not a local dsh instance pressed into IM duty.
Still stuck: what to record before FAQ / download
- OS plus Node/npm versions (
node -v/npm -v) - Whether the failing command was npx or git clone; first error line plus a few following lines
- Whether KuaiLian stayed Connected during the failure; whether timeouts cluster in one time window
- Any registry, proxy, or hosts edits (write them down if you changed them)
If KuaiLian itself won’t connect or flips, use the connection articles on this site. Package source: download page; steps also live in the guides hub and FAQ.