More than a chat window
DSH is built for ongoing tasks: understand a repository, call tools, record results, and keep moving.
Checking sign-in status
01DEEPSEEK HARNESS / DSH 06
DeepSeek Harness for real AI coding work
DeepSeek Harness (DSH) connects models, tools, context, and execution state; Cocode turns that runtime into a workspace you can start from the desktop or terminal.
Capabilities and limits follow the current release
02Direct answer
Start with what it is.
DeepSeek Harness (DSH) is an agent runtime that organizes models, tools, skills, sandboxes, and Sessions. Cocode builds an installable GUI, TUI, and workspace experience on its developer preview, so DSH and Cocode are different product layers.
- Abbreviation
- DSH
- Product role
- Agent runtime
- Current status
- Developer preview
- Cocode relationship
- Independent distribution and client experience built on DSH
Composable runtime parts
Models, tools, skills, sessions, sandboxes, and UI are composed through profiles instead of one fixed product shape.
Boundaries stay visible
Cocode makes versions, permissions, model access, and preview status explicit so an experimental runtime remains inspectable.
02Why it matters
DeepSeek Harness solves the runtime problem
A model can reason, but real coding work also needs a workspace, files, terminals, tools, permissions, sessions, and result history. DSH connects those responsibilities.
Cocode is a ready-to-run DSH distribution
Cocode provides defaults, a desktop GUI, a terminal TUI, and model-service options so developers can move from runtime components to a first task with less setup.
One task across GUI, TUI, and SSH
Review context and diffs on the desktop, then continue tests from a terminal or SSH session. Changing entry points does not split the task into separate chats.
05Working flow
Move from setup to verification with a clear result at every step.
This is an executable, reviewable path through a real repository—not an abstract feature list.
- 01
The model provides reasoning
It interprets input and produces plans, text, or tool-call intent, but does not manage the development environment by itself.
- 02
Tools connect real actions
Files, search, terminal, and browser tools connect reasoning to observable environment changes.
- 03
Skills encode working methods
Skills package task-specific instructions, resources, and verification so the workflow does not start from zero.
- 04
Sessions keep context continuous
A Session records task state and results so GUI, TUI, or a restored client can continue.
- 05
Sandbox and permissions limit impact
Runtime boundaries decide which files, commands, and network actions can run or require confirmation.
06Use cases
Decide by the work you actually need to finish.
Continuous coding tasks
Keep understanding, editing, testing, and delivery in one runtime context.
Reusable development workflows
Encode repository checks, tests, and release conventions through tools, Skills, and Profiles.
Multi-entry tasks
Inspect one Session on desktop and continue through TUI or SSH.
07Before you start
Runtime requirements and compatibility boundaries
- DSH is a runtime, not a model name or a single chat product
- Cocode is an independent distribution built on the DSH developer preview
- Profiles compose models, tools, Skills, Sessions, and permission boundaries
- Developer-preview versions may change configuration and compatibility
08Try it
Start with a runtime check
Confirm the Host and Profile before running a task through DSH.
cocode://workspaceREADY
cocode doctor
cocode09Facts and boundaries
Harness provides the runtime; the distribution provides the usable experience.
Separating runtime and client layers prevents model, UI, and deployment capabilities from being confused.
| Capability | Status | Conditions and evidence scope |
|---|---|---|
| Model and tool orchestration | DSH role | Profiles, tools, skills, and runtime configuration organize the workflow. |
| GUI / TUI | Provided by Cocode | Cocode packages the DSH workflow into desktop and terminal entry points. |
| Version stability | Preview boundary | Upstream changes can affect configuration, plugins, and compatibility. |
| Model service | Independent choice | Using DSH does not require Cocode Nut or a single endpoint. |
10Cocode perspective
Runtime compatibility should be tested with a small real task.
For a developer preview, a version number and successful startup do not prove full compatibility. Cocode recommends a short path that reads, makes a small edit, calls tools, and runs a check.
- Maintained by
- Cocode Agency
- Last reviewed
- 2026-08-25
- Scope
- DeepSeek Harness runtime role, preview status, and Cocode integration boundaries
- Verification
- Maintained against the current Cocode distribution, DSH configuration, and short-task workflow
06FAQ
Before you start, make the boundaries clear.
What is DeepSeek Harness (DSH)?
DeepSeek Harness is an agent runtime layer for composing models, tools, skills, sessions, sandboxes, and interfaces. It is not a single model or a fixed chat UI.
Is Cocode an official DeepSeek Harness product?
No. Cocode is an independent distribution built on the DeepSeek Harness developer preview.
What development work fits DSH?
It fits continuous coding tasks that require repository context, file edits, commands, tests, diffs, and a durable result trail.
Is DSH a model?
No. DSH is an agent runtime; a model is one layer it can connect and orchestrate.
Why does a developer preview need extra compatibility checks?
Preview configuration, plugins, or behavior can change, so upgrades should revalidate the Host, model, tool calling, and Sessions.