DeepSeek Harness Plugin

What Is a DeepSeek Plugin? Types, Installation, and Safety

If you searched for “DeepSeek plugin”, you probably want to extend a DeepSeek product with extra capabilities. Today, the fastest-growing answer is the DeepSeek Harness (DSH) plugin — a package that adds a focused capability to DeepSeek’s open-source agent framework.

This article explains what DeepSeek plugins are, the types you’ll find, how to install them, and how to choose safe ones.

What a DeepSeek plugin is

A DeepSeek plugin is a self-contained extension for a DeepSeek product. Because DeepSeek’s agent framework — DeepSeek Harness — is built on the principle that everything is a plugin, most DeepSeek plugins target this framework. In short:

A DeepSeek plugin (or DSH plugin) = a package that adds tools, skills, memory, UI, workflows, or integrations to DeepSeek Harness.

Main types of DeepSeek Harness plugins

TypeWhat it doesExamples in this directory
Tools & CapabilitiesNew tools the agent can callregex tester, calculator, JSON tools, image search
SkillsReusable packaged workflowsgame-building skills, colleague personas
MemoryPersistent knowledge across sessionsvector memory, conversation distillation, RAG
UI EnhancementsBetter web interfacesidebars, terminal UI, themes, panels
Workflow & AutomationMulti-step orchestrationmulti-agent coworking, pipelines
Models & ProvidersConnect more LLM providersAI SDK provider bridges
NotificationsAlert you when agents finishdesktop/chat/web notifications
Just for FunGames, pets, stickers

You can browse all categories to see the full taxonomy.

How to install a DeepSeek Harness plugin

Installation is one command in the dsh terminal:

dsh plugin add github:owner/repo

For example, to install the regex tool plugin:

dsh plugin add github:omdsh-dev/dsh-tool-regex

Steps:

  1. Install DeepSeek Harness: npm install -g @deepseek-ai/dsh
  2. Launch: npx @deepseek-ai/dsh web
  3. Add a plugin with the command above.
  4. Verify with dsh plugins list.

See the full installation guide for details, including installing from npm or a local directory.

How to choose a safe DeepSeek plugin

Community plugins run with your dsh process’s permissions, so a little diligence goes a long way:

  1. Check the source — every plugin here links to its GitHub repository. Skim the README and the code if you can.
  2. Check the license — prefer MIT/Apache-2.0; avoid plugins without a license.
  3. Check activity — recent commits and open issues tell you if a plugin is maintained.
  4. Pin the commit — use dsh plugin add github:owner/repo#sha for reproducible installs.
  5. Start small — install one plugin at a time so you can isolate problems.

The full checklist is in the DSH plugin safety guide.

The bottom line

DeepSeek plugin is the umbrella term; DeepSeek Harness plugin (or DSH plugin) is the concrete, fast-growing kind today. Browse the plugin directory to see what the ecosystem offers, read each plugin’s page for install instructions, and follow the safety basics above. If you maintain one, see how to submit your plugin.

DeepSeek Harness Plugin FAQ

What is a DeepSeek plugin?

A DeepSeek plugin is an extension that adds a capability to a DeepSeek product. Today, most 'DeepSeek plugins' are DeepSeek Harness (DSH) plugins — packages that extend DeepSeek's open-source agent framework with tools, skills, memory, UI, or integrations.

Where can I find DeepSeek Harness plugins?

Community plugins are discovered through the GitHub topic 'dsh-plugin' and curated directories like this one. Each plugin page here links directly to its source repository with one-command install instructions.

How do I install a DeepSeek plugin?

For DeepSeek Harness, run: dsh plugin add github:owner/repo. The dsh CLI resolves the plugin from GitHub, checks provenance, and installs it into your active profile.

Are DeepSeek plugins safe to install?

Most community plugins are safe, but they run with your dsh process's permissions and may execute build scripts at install time. Check the source repository, license, and activity before installing, and pin commit hashes for reproducibility.

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