Tianyi Cui
8a79679489
The bridge replaces its serialization queue with a pool that reuses the native concurrency contract: submissions classify through registry.executionMode (fail-closed isConcurrencySafe), start strictly in submission order, overlap up to the validated maxParallelSubCalls config (default 10; 1 restores serial), and exclusive calls drain the pool, run alone, and bar later calls. Each started sub-call logs a tool/code-dispatch-start event at pool entry; the existing tool/code-dispatch settles the pair (started ⇔ settles exactly once; abandoned queued calls log neither). SDK prompt guidance now states the true Promise.all contract — re-recorded across every code/both-mode snapshot (plus the stale cordis-dynamic-toolchain fixture gaining the required description arg). Client: CodeSubCall widens to RunningToolCall | ToolResultNode — starts land the running shape (rows wear the native running ring), settles replace in place preserving start order, callTime pairs to the start time. Fixture emits start/settle pairs; jsdom pins the running sub-row; runtime specs pin in-place settlement and out-of-order completion.
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.