Four rounds of structural rework on the conversation surface, converging on one registration model for the whole client: - Review fixes: open() leaves the inject factory (SessionsService owns the semantic); ConversationService mounts via ctx.plugin(); the bespoke view registry retires into the 'conversation.view' list slot. - Ring alignment: createChatView factory retired (components get everything through checkable shares at the register call site); the hand-rolled t/i18n threading is deleted wholesale — a future framework-level i18n will supply t as a standard prop keyed by slot name, so no interim manual channel. - Toolview dissolution: ToolViewRegistry / ToolViewResolver / ToolViewOutlet / ctx.toolviews retire. Tool rows are entries of the 'conversation.chat.toolview' keyed slot (scope: session) declared by the chat entry; ToolRowOwnerProps is the unified owner payload; GenericToolCard becomes the call-site fallback; registrants are plain plugins (inject ['slots','conversation'] as the load-order seam); session-dimension dispatch moves into components (useSessions reads parentId); trajectory/waterfall gain same-shape slots the day they render tool rows (RendersCheck rejects empty declarations). Slot names mirror the composition path (<domain>.<entry>.<hole>). - Staging follows current: cell()/binding() are pure resolution (render-safe); the constructor subscribes to the list store and followCurrent opens the event window when the current session changes — staging IS the open signal, business verbs are the timing, React render/commit is decoupled from window lifecycle. A masked current (projection gap) keeps the stage untouched so deferred teardown semantics survive reconnects. Agent Note: .agents/notes/implemented/architecture/ 2026-07-23-toolview-dissolution.md (bilingual pair) records the decision, the four rejected alternatives, and the accepted semantic changes; the web client architecture note and packages/client/AGENTS.md carry the current-state narrative. Verified: typecheck 0, duplication 0 clones (478 files), full coverage run 6190 passed with zero threshold errors, knip 0, doc-sync 24/24, client aggregate tsc 0, render-count checks (one commit per chunk, zero row re-renders under streaming) green.
DeepSeek Harness
English | 中文
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:
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 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:
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:
dsh
Headless
Run one task, print the final answer, and exit:
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, so deployments can extend or replace behavior without forking the agent loop. See the architecture for the underlying design.
- Code Mode (opt-in). It exposes a
run_codetool and a generated TypeScript SDK; only program output re-enters model context. See 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.
Community
Follow DeepSeek Harness on Twitter for project updates.
Development
pnpm install
pnpm run test:coverage
Start with the development guide and read the architecture before changing packages.
For agents, follow AGENTS.md.
DeepSeek Harness is currently pre-release.