dsh-tui

dsh-tui

An open-source terminal front door for DeepSeek Harness (dsh).

@tomowang/dsh-tui is an out-of-tree mode bundle: it stacks on @deepseek-ai/dsh-base exactly like the shipped dsh-web-app and dsh-headless bundles do, but drives the agent from your terminal instead of a browser. The package is both a Cordis plugin (terminal input and presentation) and a dsh bundle (dsh.bundle.patch in package.json points at cordis.patch.yml); everything else — model adapters, tools, session persistence, sandbox and approval policy — stays in dsh-base and remains patchable underneath.

How it works

• The TUI renders only from the durable session log: it replays agent.session.events on startup and follows session/event live, so --resume shows the exact history the log carries — the harness's "model-visible ⟺ logged" invariant does the heavy lifting.
• Line input maps to the agent inbox: agent.followup() while idle, agent.steer() while a turn is running, Ctrl+C cancels the running turn.
• tui-startup parses this app's flags (everything after the launcher's own) through dsh-cmdline and publishes them as an ordinary Cordis service; the runner row reads them via the bundle patch, mirroring dsh-headless.
• Both stdin and stdout must be real TTYs; the plugin fails loud instead of degrading, so pipes keep using dsh --profile headless.

Features

• Status bar — session id, active LLM provider/model, current agent preset, live run state with spinner, queued-message count, and logged event count.
• Stats line — turn/step counts, LLM/tool wall time, TTFT and decode tok/s, cache-hit %, billed tokens, and a compact context-usage summary; sections hide themselves until there's data.
• /model provider management — switch the active model, and add, edit, or delete custom LLM providers (route, base URL, API key, model discovery) without leaving the terminal.
• Agent presets — start a fresh session on a given preset with --agent-preset, or browse and switch presets from /presets (fixed once the session's first turn has run).
• Session inspectors — /trajectory for a turn/step event ledger with a detail view and filtering, /context for a context-window usage breakdown, /plugins for the loaded Cordis plugin tree and fiber state.
• Tool Cards overlay — /tools or Ctrl+O opens a scrollable browser over the session's tool calls/results, letting a card expand past the transcript's fixed line cap to its full presentation instead of showing "…omitted".
• Reasoning display — a model's reasoning/thinking content renders as a distinct dim ✦ thinking block ahead of its visible answer, both while streaming and in settled transcript output.
• Markdown rendering — assistant text with an unambiguous Markdown signal (fenced code, headers, lists, blockquotes, rules, tables, links, bold/strikethrough, inline code) is styled for the terminal; plain prose passes through untouched.
• Permission preset cycling — Shift+Tab cycles read-only / workspace-write / danger-full-access / custom, shown live in the prompt area.
• In-terminal approvals and questions — a tool call parked on an ask permission decision is answered right in the terminal (allow once / reject), and ask_user_question/plan-mode's plan review present as an option list with multi-select and free-text "Other…", esc to skip.
• Manual compaction — /compact summarizes and compacts session history on demand.
• Persisted prompt history — submitted lines are saved across processes and /clear, recalled with ↑/↓.
• Readline-style input — word/line motion, kill/yank-style deletes, multi-line drafts, and shell-like double-press Ctrl+C/Ctrl+D to exit.
• Shell mode — a leading ! on an empty prompt (Claude Code's convention) switches Enter to run the line as a local shell command instead of sending it to the agent; the prompt border turns yellow for the duration, and output streams into the transcript without touching the session log.
• @-file-mention autocomplete — typing @ opens a fuzzy-filtered dropdown of repo files (git ls-files, or a bounded walk outside a git repo); Tab/Enter inserts the picked path at the cursor.
• Every overlay degrades to a plain notice instead of failing the whole TUI when its backing service isn't mounted in a given profile.

Install

Requires Node ^22.19 || >=24 and a DEEPSEEK_API_KEY.

# 1. Install the dsh launcher
npm install -g @deepseek-ai/dsh

# 2. Create the profile and install this bundle into it
#    (dsh reconciles the profile manifest's "dsh.profile.bundles" list
#    automatically, appending any installed dependency that declares
#    dsh.bundle.patch — no manual package.json edit needed)
dsh plugin --profile tui add @tomowang/dsh-tui

# 3. Run
dsh --profile tui
dsh --profile tui --resume <sessionId>           # reopen a persisted session
dsh --profile tui --agent-preset <presetId>      # start a fresh session on a given preset
dsh --profile tui --dump-config                  # inspect the composed plugin tree

Any row --dump-config prints — the model adapter, tool set, sandbox policy, this TUI's own config — can be overridden from the profile's cordis.patch.yml without touching this package. --agent-preset is a dsh-launcher flag (parsed by tui-startup, not --dump-config above) that only applies to a fresh session; it's ignored together with --resume, and is a no-op with a startup notice on profiles that don't mount dsh-agent-presets.

Terminal commands

Keyboard shortcuts

Develop

pnpm install
pnpm run build        # tsc → lib/
pnpm run typecheck
pnpm run lint
pnpm run test

To try a local checkout inside a profile, point the profile's dependency at this directory (dsh plugin --profile tui add /path/to/dsh-tui) and rebuild before each run — profiles load the built lib/ under plain Node.

Releasing

CHANGELOG.md and GitHub Release notes are generated from Conventional Commits via git-cliff. To cut a release: bump version in package.json, run pnpm run changelog, commit as chore(release): vX.Y.Z, then git tag vX.Y.Z && git push && git push --tags. The tag push triggers CI to build, create the GitHub Release, and publish to npm. See AGENTS.md for the full flow.

License

MIT