# DeepSeek Harness

- Category: AI agents
- Official site: https://www.deepseek.com/harness
- HTML: https://www.88z.ai/en/tools/deepseek-harness
- Markdown: https://www.88z.ai/en/tools/deepseek-harness.md

DeepSeek Harness is an open-source AI agent architecture launched by DeepSeek, built on the Cordis philosophy that 'everything is a plugin.'

## What is DeepSeek Harness?

DeepSeek Harness is an open-source AI agent architecture launched by DeepSeek, built on the Cordis philosophy that 'everything is a plugin.' It serves as both an out-of-the-box desktop application for macOS and Windows, and a web interface launchable via code, designed to help users organize documents, analyze spreadsheets, write code, and schedule complex automated tasks.

The core strength of this tool lies in its extensibility.Users can expand the agent's capabilities by installing existing plugins or creating new ones directly through natural language conversations in 'Creation Mode.' Whether handling daily administrative work, performing deep data analysis, or executing time-consuming background scripts, DeepSeek Harness provides a transparent, controllable, and efficient automation solution.

## Key features

- **Everything is a**：Built on the Cordis architecture, it supports installing official or community plugins, and allows AI to automatically write and install custom plugins (like a Pomodoro timer) via conversation.
- **Full-Stack Task**：Capable of organizing materials, analyzing Excel sheets, writing Word/PDF documents, coding in TypeScript/Python, and directly previewing and modifying task outputs.
- **Automated Schedu**：Supports creating periodic tasks, such as automatically generating weekly project reports every Friday, executing scripts in the background with progress tracking.
- **Transparent Deve**：Provides detailed execution traces showing model reasoning, tool call parameters, and results, facilitating debugging and prompt optimization for developers.
- **Multimodal Inter**：Initiate tasks via slash commands, @file references, or natural language dialogue, with experimental support for voice input to enhance interaction efficiency.
- **Cross-Platform D**：Offers desktop clients for macOS (Apple Silicon) and Windows (64-bit), while also supporting quick Web UI launch via npx command.

## How to use it

1. Visit the official website to download the desktop client for macOS or Windows, or clone the source code from GitHub.
2. Launch the application and describe your needs in natural language within the default workspace, e.g., 'Analyze this sales report.'
3. To extend functionality, install existing plugins from the plugin center or use 'Creation Mode' in chat to have AI write new plugins.
4. For repetitive work, use the schedule_create command to set up scheduled tasks, specifying trigger times and execution content.
5. Developers can monitor each step's tool calls and model reasoning via the execution trace panel to ensure accurate task execution.

## Where it fits

- **Automated Weekly**：Set up automatic retrieval of project records every Friday afternoon, organizing data and generating formatted Word or PDF weekly reports for distribution.
- **Coding Assistanc**：Fix bugs, develop new features, or run test cases in local projects, where the AI can directly read files, modify code, and verify results.
- **Complex Data Ana**：Upload Excel sheets with large datasets, allowing the Agent to calculate year-over-year growth, create charts, and generate analytical conclusion documents.

## Pricing and free quota

Pricing and any free quota follow the official site.

## Who it is for

- Software Developers
- Data Analysts
- Efficiency-focused Knowledge Workers
- AI Agent Researchers

## FAQ

### Is DeepSeek Harness free to use?

DeepSeek Harness itself is open-source and free (MIT license), but running it may involve model API costs or local compute resource usage, depending on your configuration.

### Can I write my own plugins?

Yes.You can manually write plugin code, or simply describe your requirements in natural language within the app's 'Creation Mode' to have AI generate and install the plugin for you.

### Which operating systems are supported?

It currently offers desktop clients for macOS (Apple Silicon) and Windows (64-bit), and also supports running as a web application via a Node.js environment.

## Tags

AI Agents · Workflow Automation · Open Source Tools · Plugin Ecosystem

Features, pricing and availability follow the official site. Except for 88z.ai’s own API pages, this is a third-party product; 88z.ai only provides a directory introduction.