DeepSeek Harness

What is DeepSeek Harness

DeepSeek Harness is an open-source AI Agent product from DeepSeek, built on the Cordis "everything is a plugin" architecture, and it has launched out-of-the-box macOS/Windows desktop clients. DeepSeek Harness can help users organize documents, analyze spreadsheets, write code, verify information, and execute time-consuming tasks. It supports extending capabilities through plugins and creating custom plugins via conversation. DeepSeek Harness is open-source and free, and supports a third-party plugin ecosystem.

Main features of DeepSeek Harness

Everyday office work: Can organize materials, analyze spreadsheets/PDFs, generate charts, and create presentations.
Code development: Can understand projects, modify code, run tests, and show the code change diff for each round in the conversation.
Information verification: Supports searching for materials, cross-verifying, and providing reliable conclusions with sources.
Time-consuming tasks: Scripts and batch file processing can run in the background, with progress viewable at any time.
Automated tasks: Built-in scheduled task plugin allows repetitive work to run automatically on a schedule.
Plugin extension: Enter an npm package name to install a plugin, and you can also create custom plugins through conversation in creation mode.
Interface customization: Flexibly choose how Agent steps are displayed and how detailed the interface information is, adapting to personal work habits.

How to use DeepSeek Harness

Download and install: Visit the DeepSeek Harness official website https://www.deepseek.com/harness/ , download the macOS or Windows installer, and complete the installation.
Log in to your account: After launching the desktop client, log in with your DeepSeek account.
Submit a task: Describe your needs in the conversation, such as organizing documents, analyzing spreadsheets, modifying code, etc., and upload related files.
View and refine results: Preview generated files in the sidebar, view code diffs, and continue to provide revision suggestions through the conversation.
Install plugins: On the plugin management page, enter the npm package name to install the required plugin, and enable, disable, or uninstall it as needed.
Create custom plugins: In creation mode, describe your needs through conversation and let Harness automatically write and save the plugin.
Set up automated tasks: Enable the automated task plugin, set repetitive work as scheduled tasks, and manage execution records.

Core advantages of DeepSeek Harness

Out of the box: Provides macOS/Windows desktop installers with preset features commonly used for everyday office work and development, with no complex configuration required.
Completely open source: Open-sourced under the MIT license, with transparent code that can be freely customized and further developed.
Everything is a plugin: From tools to the interactive interface, everything can be pluginized, freely combining capabilities with extremely strong extensibility.
Conversational plugin creation: In creation mode, natural language can be used to have Harness write plugins itself, taking effect immediately and being saved persistently.
Dual scenarios of office work + development: Can handle documents, spreadsheets, and presentations, as well as understand projects, modify code, and run tests.
Transparent task process: View Agent work steps, execution traces, and code change diffs, making it easier to troubleshoot issues.
Automation capabilities: Supports scheduled task plugins, so repetitive work can be automatically executed in the background according to a schedule.
Deep model collaboration: Co-evolves with DeepSeek models, continuously optimizing and adapting for new models.