Tianyi Cui
f9cc62266c
Responding to ds-review-bot round 2 on #658 (three critical findings, one warning — all rooted in the pump/commit split racing ordered stages): - ONE driver lane now owns every ordered stage: the start append, prepare (pre-execute/guards), and the head-of-line commit (post-execute, context deferral, settle append). start() is awaited before the next entry can start, so concurrent submissions can no longer run pre-execute pipelines concurrently; only the around-dispatch/body stage overlaps, matching the native loop's fillPool sequencing. - An exclusive call's barrier now holds through its COMMIT: later starts wait for the exclusive pipeline (post-execute included) to finish, the native exclusive-group semantics. - drainDispatches() awaits the driver run itself, so a commit already mid-flight when the program returns is drained before run_code closes the turn — the settle event and deferred contexts land inside it. - maxParallelSubCalls is resolved and validated at construction (positive integer), so direct construction can no longer wedge the pool with 0. New tests: overlapping-submission ordered-prepare, barrier-through-commit, drain-mid-commit, cap rejection. 96 keyless snapshots replay unchanged; Agent Note updated (both languages).
DeepSeek Harness
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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 && 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.