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
| Type | What it does | Examples in this directory |
|---|---|---|
| Tools & Capabilities | New tools the agent can call | regex tester, calculator, JSON tools, image search |
| Skills | Reusable packaged workflows | game-building skills, colleague personas |
| Memory | Persistent knowledge across sessions | vector memory, conversation distillation, RAG |
| UI Enhancements | Better web interface | sidebars, terminal UI, themes, panels |
| Workflow & Automation | Multi-step orchestration | multi-agent coworking, pipelines |
| Models & Providers | Connect more LLM providers | AI SDK provider bridges |
| Notifications | Alert you when agents finish | desktop/chat/web notifications |
| Just for Fun | Games, 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:
- Install DeepSeek Harness:
npm install -g @deepseek-ai/dsh - Launch:
npx @deepseek-ai/dsh web - Add a plugin with the command above.
- 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:
- Check the source — every plugin here links to its GitHub repository. Skim the README and the code if you can.
- Check the license — prefer MIT/Apache-2.0; avoid plugins without a license.
- Check activity — recent commits and open issues tell you if a plugin is maintained.
- Pin the commit — use
dsh plugin add github:owner/repo#shafor reproducible installs. - 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.