Yichen Jiang
85a3a158dd
Review round three found the provider's write path could destroy state it never observed: - Watcher reloads and document writes ran on two independent promise chains, and a write rendered the whole next document from the cached text. An external edit still inside the debounce window (or missed outright) was overwritten, and the follow-up reload no-oped because the post-rename content matched the cache — the edit vanished without a trace. Reloads and writes now share one operation chain, and every write starts by reconciling the on-disk text into the seam before rendering, so unobserved sibling sections survive and publish first. An unparsable on-disk document fails the write loud instead of being overwritten. - The initial load raced the watcher's own setup: a change written between that read and the watcher becoming active never fired an event. The watcher's ready signal now queues one reconcile, closing the gap. - Two processes sharing a harness home rendered from independent caches, last writer winning. Writes now hold a wx-created <file>.lock sibling around the read-render-rename cycle with bounded backoff, a crashed- holder stale takeover, and a deadline failure; readers stay lock-free because the rename commit is atomic. - renderYaml replaced the whole namespace node, dropping every comment inside the section. The next section now lands as a leaf-level diff (set changed values, delete removed keys), so comments, anchors, and formatting survive on every untouched node and on the key of every changed pair; arrays still replace wholesale when unequal.
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 keeps every checkout under ~/.dsh/source: the master clone at ~/.dsh/source/master and each install's staging checkout as a git worktree ~/.dsh/source/staging-<timestamp>. The stable symlink ~/.dsh/source/current points at the active staging worktree, and dsh in ~/.local/bin links to current/bin/dsh, so an upgrade repoints one symlink and the dsh on PATH never moves. Re-running the command adds a fresh staging worktree from an updated master and repoints current at it. 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. Resolve the running checkout from the dsh launcher so the command holds regardless of which staging worktree is current (the launcher resolves through the stable current symlink):
dsh_bin=$(cd "$(dirname "$(command -v dsh)")" && pwd -P)/$(basename "$(command -v dsh)")
while [ -L "$dsh_bin" ]; do
link=$(readlink "$dsh_bin")
case $link in /*) dsh_bin=$link ;; *) dsh_bin=$(cd "$(dirname "$dsh_bin")" && cd "$(dirname "$link")" && pwd -P)/$(basename "$link") ;; esac
done
dsh_dir=$(cd "$(dirname "$dsh_bin")/.." && pwd -P)
pnpm --dir "$dsh_dir" run build && pnpm --dir "$dsh_dir" 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.