How to Install DeepSeek Harness Plugins

1. Run the official Harness

DeepSeek's current quick start requires Node.js and launches the Web UI with this command:

npx @deepseek-ai/dsh web

The official default address is http://127.0.0.1:3080. If this is your first run, get the base Harness working before adding third-party code so any later failure is easier to isolate.

2. Choose a plugin by use case

Start from the DeepSeek Harness plugins directory or a focused category. Open the internal detail page instead of jumping directly to an unknown repository. Check:

• what the plugin adds and which profile it targets;
• the complete installation command;
• publisher, license, language and recent repository activity;
• permissions, external services and compatibility warnings in the README;
• screenshots or real output that demonstrate the claimed behavior.

3. Copy the exact publisher command

Install commands can differ by package source and profile. Use the command on the listing only when it is backed by the publisher's current documentation. A common repository-based shape looks like this:

dsh plugin --profile web add github:OWNER/REPOSITORY#main

Do not remove or change the --profile value casually: a plugin intended for the Web UI may not belong in another profile. The detail page's final “Get this plugin” button opens the publisher source for the final check.

4. Verify one capability at a time

1. Refresh or restart the profile named by the publisher.
2. Confirm that the plugin appears without a load or approval error.
3. Run the smallest documented example.
4. Review unexpected permissions before granting them.
5. Keep the repository URL and installed revision so you can reproduce or reverse the change.

Troubleshooting checklist

The plugin does not appear

Recheck the profile, package path, branch or tag, then look for a load error in the Harness UI or publisher issue tracker.

The command is missing

Treat the listing as informational until the publisher documents a supported installation path. Do not invent a command from the repository name.

The plugin stopped working after an update

Compare the plugin's last push with the Harness release and look for a compatibility note. Developer-preview breakage should be expected.

The plugin requests broad access

Pause and read its source, permission rationale and issue history. Only grant capabilities needed for the advertised feature.

Official references

This guide follows the current DeepSeek Harness repository and its developer-preview guidance. Publisher-specific installation details remain authoritative for each third-party plugin.