(../../harness/icons/file-types/word.svg)  (../../harness/icons/file-types/excel.svg)  (../../harness/icons/file-types/html.svg)  (../../harness/icons/file-types/typescript.svg)  (../../harness/icons/file-types/python.svg)  (../../harness/icons/file-types/pdf.svg)  (../../harness/icons/file-types/markdown.svg)  (../../harness/images/qr-wechat.png)  (../../_next/static/css/25f198211a7e1205.css)  (../../_next/static/css/826310b8bcf73c16.css)  (../../_next/static/css/aa0e993381ed79dc.css)  (../../_next/static/css/5adb47a13a2794be.css)  (https://www.deepseek.com/_next/static/chunks/webpack-b8973944fb18ed66.js)  DeepSeek Harness | Explore the limits of intelligence   (index.html)  (https://www.deepseek.com/harness/)  (index.html)  (https://www.deepseek.com/harness/)                 (../../harness/favicon.svg)  (../../favicon.ico)    (index.html)                              中文 EN         (index.html)                                Download Desktop    (https://download.deepseek.com/desktop/dsh-latest-macos-arm64.dmg) macOS (Apple silicon) (https://download.deepseek.com/desktop/dsh-latest-windows-x64.exe) Windows (64-bit)     (https://github.com/deepseek-ai/deepseek-harness) GitHub (https://deepseek-harness.github.io/deepseek-harness/en/guide/quickstart) Developer docs (https://github.com/topics/dsh-plugin) Community plugins (https://arxiv.org/abs/2608.25512) Cordis paper  中文 EN      (DeepSeek Harness preview)        Preview  DeepSeek Harness  Ready to use . Right now .  Everyday tasks, coding, or your own harness—it starts here. DeepSeek Harness is now in public preview worldwide and open source, with composable plugins that extend what agents can do.  (https://www.deepseek.com/en/download/)    Download Desktop                                                   New Session       Plugins     Automation  Workspace                    Default workspace  Meet DeepSeek Harness  Q3 summary slides  Review prep  Sales report      Data analysis     DSH plugin dev        DeepSeek                 Meet DeepSeek Harness     Could you introduce yourself? Thought for a while    I'm DeepSeek Harness, an open-source harness from DeepSeek built on (https://github.com/cordiverse/cordis) Cordis 's “everything is a plugin” architecture. Run me as a desktop app or launch the web UI from code. I can help with: Everyday work — Organize files, analyze data, draft docs, and create slides. Everyday work — Work with docs, data, and slides.  Coding — Explore repos, fix bugs, build features, and run tests. Coding — Fix bugs, build features, run tests.  Research — Find information, verify facts, and cite sources. Research — Find facts and cite sources.  Background tasks — Run scripts, batch-process files, and track progress. Background tasks — Run scripts and track progress.  Plugins — Add or build plugins to fit your workflow. Plugins — Add plugins or build your own.   And so much more...    Describe what you want to build, / commands, @ files or sessions          Workspace Write     DeepSeek-V41-Flash High                    Expanding capabilities .  Work on your terms .  Everything is a plugin  Install plugins, or create them through chat in “Creator mode”, to extend tools, skills, and the interface.     (DeepSeek Harness plugin manager showing official plugins and the Add plugin action)       Creator mode   Write a Pomodoro timer plugin for me.            Write a Pomodoro timer plugin for me. Deep diving...          Load skill  cordis-plugin-development      Read  skills/cordis-plugin-development/SKILL.md      Thinking  shell.overlay is a frame-wide floating layer — the right target for an always-on-top window.     Inspect providers  9 inspect providers     Query runtime  Slots.listSubTree     Write  dsh-plugin-pomodoro-float/package.json +35−0     Write  dsh-plugin-pomodoro-float/client.js +638−0      Tool call  plugin_manager · install_bundle     Edit  dsh-plugin-pomodoro-float/client.js +5−3    Bash  Verify live plugin state    Took 5m 24s    The floating Pomodoro timer is built, installed, and verified.   Plugins  Official           Agent teams Experimental             Auto approval review Experimental                  Scheduled tasks Experimental           Voice input Experimental        Terminal              Agent loop               Subagents    Installed          Pomodoro timer                Pomodoro timer     Focus Short break  25:00 24:59 24:58 24:57 24:56 24:55 24:54 24:53 24:52 24:51 24:50 24:49 24:48 24:47 24:46 24:45 24:44 24:43 24:42 24:41 24:40 24:39 24:38 24:37 24:36     Start focus  25:00 24:59 24:58 24:57 24:56 24:55 24:54 24:53 24:52 24:51 24:50 24:49 24:48 24:47 24:46 24:45 24:44 24:43 24:42 24:41 24:40 24:39 24:38 24:37 24:36   Focus       Complete a range of tasks  Organize documents, analyze spreadsheets, and write code. Preview the results directly and refine them through conversation.     ()   Brief.docx Word document   ()   Data.xlsx Excel spreadsheet   ()   index.html HTML page   ()   label.ts TypeScript code   ()   analyze.py Python script   ()   Report.pdf PDF document   ()   README.md Markdown document   ()   Brief.docx Word document   ()   Data.xlsx Excel spreadsheet   ()   index.html HTML page     Review · turn 1      ()  src/label.ts   +2 −1        @@ -8,3 +8,4 @@ 8 8  function label (name: string ) {  9  − return name;   9 + const text = name.trim ();   10 + return text || 'Untitled' ;  10 11  }        Adapt to your workflow  Enable the Scheduled tasks plugin to start tasks anytime and run recurring work on schedule. Stay on top of progress and inspect tool call details when needed.     Every Friday at 17:00 Beijing time, summarize this week's project notes in a weekly report. Deep diving...     Worked          Create reminder  Summarize this week's project notes in a weekly report. Weekly project report   IN schedule_create  { "prompt" : "Summarize this week's project notes in a weekly report.",  "title" : "Weekly project report",  "weekly" : {"time":"17:00:00","time_zone":"Asia/Shanghai","weekdays":[5]}  }   Weekly project report Scheduled for  Repeat Weekly on Fri at 17:00 (Asia/Shanghai) Status Scheduled        Created “Weekly project report”, scheduled for Fridays at 17:00 Beijing time.     Weekly project report Weekly on Fri at 17:00 (UTC+08:00 · China Standard Time)  Open        Developer tools  Inspect execution traces and detailed runtime information to troubleshoot issues with tool calls and task execution.      (DeepSeek Harness trajectory view showing a timeline, tool calls, and execution details)     Duration Turns⊟  Calls⊟     Search  Input Model Tools                                         SYSTEM  Initial System Prompt  Turn 1 USER  First run bash to print exactly NAVIGATION_OK, then read nav-a.md and nav-b.md with two read calls, then reply with the single word FIRST_DONE.  CONTEXT  Current runtime context: workspace policy, available skills, and this turn's environment snapshot.  ASSISTANT  Run bash to confirm the output, then read both navigation files.  TOOL  bash {"command": "echo NAVIGATION_OK", "description": "Print NAVIGATION_OK"} → NAVIGATION_OK   TOOL  read {"file_path": "nav-a.md"} → nav-a.md   TOOL  read {"file_path": "nav-b.md"} → nav-b.md   ASSISTANT  FIRST_DONE  Turn 2 USER  Reply in markdown with a level-2 heading “Navigation Summary” and summarize both files.  ASSISTANT  Navigation summary: alpha nav, beta nav, and the NAVIGATION_OK output.  TOOL  bash {"command": "ls -la", "description": "List workspace files"} → nav-a.md  nav-b.md  README.md   TOOL  grep {"pattern": "NAVIGATION", "path": "."} → 2 matches   TOOL  read {"file_path": "README.md"} → README.md   ASSISTANT  Verified the workspace listing and grep results; the task is complete.    TOOL Turn 1· Step 1 ×  Summary Payload Result Schema Timing  NAVIGATION_OK  Started 2026-08-12 17:30:52.637 Duration 34 ms Timing source Session timestamps Hierarchy Assistant Message           Developer experience   Start with one command  Install Node.js, then launch the Web UI with npx. $  npx @deepseek-ai/dsh web Copy    Install from source  Clone the full source and follow the setup instructions in the repository. $  git clone https://github.com/deepseek-ai/deepseek-harness Copy             Join the DSH plugin ecosystem  DeepSeek Harness is in preview, with evolving core plugins and APIs. We invite users and developers worldwide to explore the limits of intelligence together through open-source, reusable, and composable infrastructure. (https://github.com/deepseek-ai/deepseek-harness)   View on GitHub  (https://deepseek-harness.github.io/deepseek-harness/en/guide/quickstart)     Developer docs (https://github.com/topics/dsh-plugin)    Community plugins (https://arxiv.org/abs/2608.25512)    Cordis paper        Official WeChat account  (QR Code)  Scan to follow     Open source · MIT· © 2026 DeepSeek. All rights reserved. (https://www.deepseek.com/en/harness/privacy/) Privacy Policy · (https://www.deepseek.com/en/harness/terms-of-use/) Terms of Use