DeepSeek Harness Web UI: Start, Configure & Use It
dsh web is a hard-coded alias for the web profile. It serves http://127.0.0.1:3080 by default, accepts Web app arguments such as --port, and requires a configured model plus a selected workspace before a new session can do useful work. This page separates verified behavior from community reports and marks the release-candidate context so you can act without mistaking an observation for a permanent guarantee.
Start with this command
This is the narrow command relevant to this page. Read the checks below before changing flags, credentials or profile patches.
dsh web --port 3080What is verified now
dsh web is a hard-coded alias for the web profile. It serves http://127.0.0.1:3080 by default, accepts Web app arguments such as --port, and requires a configured model plus a selected workspace before a new session can do useful work.
Evidence basis: Official Web UI guide; port 3080. The status was checked on 14 August 2026; re-check the linked source after any dsh release.
Safe workflow
Use the smallest reversible workflow first. Do not add community plugins or paste credentials while validating the base behavior.
- Start the Web profile on loopback.
- Open the printed URL and configure a model route.
- Select a real workspace and run a non-destructive first task.
Verify before moving on
A successful result should be observable: a version string, reachable local URL, valid provider response, loaded configuration, or disappearance of the exact error. If the result differs, stop and capture sanitized evidence rather than stacking unrelated fixes.
- Record the exact dsh, Node or Python version.
- State the operating system and installation method.
- Link the first-party source and include only sanitized logs.
First-party sources
Open the original source before acting on a changed version or unresolved community report.