Files
deepseek-harness/README.md
T
Turtle ae2ec5f8d7 fix(demo): build client plugin bundles before serving dsh web
demo:web and the README Web UI instructions ran only build:web (the Vite
frontend shell), never the root build that emits each web-client plugin's
lib/client.js. On a clean checkout every /plugins/<id>/client.js 404s and
the client loader shows "Failed to load plugins".

Run pnpm run build before build:web in both the demo:web script and the
README instructions for the installed ~/.dsh/source checkout.
2026-07-23 16:37:56 +08:00

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Markdown

# DeepSeek Harness
English | [中文](README.zh.md)
DeepSeek Harness (`dsh`) is an open-source coding agent built on the DeepSeek Harness SDK.
It uses an architecture where **everything is a plugin**.
## Install
Install `dsh` with one command:
```sh
curl -fsSL https://raw.githubusercontent.com/deepseek-harness/deepseek-harness/master/scripts/install.sh | sh
```
The installer requires `git` and Node `^22.19 || >=24`, offers to install `pnpm` when it is missing, and prompts for a DeepSeek API key.
The installer clones DeepSeek Harness to `~/.dsh/source`, links `dsh` into `~/.local/bin`, and launches it. Re-running the command updates the checkout. See [`scripts/install.sh`](scripts/install.sh) for alternate install locations and other options.
## Use DeepSeek Harness
### Web UI
For the recommended local interface, build the frontend after installation and after each update, then start the Web UI:
```sh
pnpm --dir ~/.dsh/source run build && pnpm --dir ~/.dsh/source run build:web
dsh web
```
The Web UI is served at `http://127.0.0.1:3080` by default.
### TUI
Start the full-screen terminal interface:
```sh
dsh
```
### Headless
Run one task, print the final answer, and exit:
```sh
dsh -p "summarize this workspace"
```
## Why DeepSeek Harness
Built-in capabilities cover file reading, editing, and search; shell execution; reusable skills; task tracking; subagents and workflows; persistent sessions; and context compaction. The TUI also includes Plan Mode.
- **Everything is a plugin.** Models, tools, policies, storage, context management, and interfaces are composable [Cordis plugins](docs/user/develop/basic/index.md), so deployments can extend or replace behavior without forking the agent loop. See the [architecture](docs/architecture.md) for the underlying design.
- **Code Mode (opt-in).** It exposes a `run_code` tool and a generated TypeScript SDK; only program output re-enters model context. See [Code Mode](packages/core/tools/README.md#code-mode).
- **Self-referential Cordis tools are opt-in.** They let the agent inspect its live runtime and mount or unmount plugins while it runs. See the [Cordis tools](packages/cordis/tool-cordis/README.md).
## Community
Follow <a href="https://x.com/Deepseekharness">DeepSeek Harness on Twitter</a> for project updates.
## Development
```sh
pnpm install
pnpm run test:coverage
```
Start with the [development guide](docs/development.md) and read the [architecture](docs/architecture.md) before changing packages.
For agents, follow [AGENTS.md](AGENTS.md).
DeepSeek Harness is currently pre-release.
## License
[BSD 3-Clause](LICENSE)