5717726835
Drop SubprocessSpawnSpec.dshEnv and splitEnvChannels(); childEnv() is now scrubbed-base + explicit entries with no namespace validation. The invariant dropped is the reserved-namespace check on explicit entries (DSH_* rejected from env, non-DSH_* rejected from dshEnv). Explicit-entry trust already covers it: an explicit credential-shaped entry has always merged after the scrub as a deliberate caller opt-in, and an explicit DSH_* entry is the same deliberate act — the staleness invariant lives entirely in scrubbedParentEnv dropping AMBIENT credential-shaped and DSH_* names, which stays. The validation's only observed effect was rejecting legitimate explicit entries: both recent CI breakages (DSH_GATE_CONCURRENCY exported into every job crashing lsp specs, DSH_PERMISSION_MODE in acp config.env crashing the child spawn) were this check firing on values a caller meant to pass, each fixed by routing around the bureaucracy the seam itself imposed. The bash seam keeps its own request/spec dshEnv field: that is bash-owned trusted-plugin vocabulary (the ctx.bashEnv collected overlay) whose merge-last position guarantees a caller env entry cannot displace a managed fact; bash-local now flattens ENV_OVERRIDES -> spec.env -> spec.dshEnv into the seam's one env map. subagent-acp and lsp-local pass their single config env map straight through. DshEnvironment/DshEnvironmentKey/DSH_ENV_PREFIX stay on the subprocess seam as the namespace vocabulary (bash re-exports them; scrubbedParentEnv filters on the prefix). Tests: the two channel-rejection specs and the splitEnvChannels partition spec are deleted; one spawn spec now proves an explicit DSH_* env entry reaches the child while an ambient one is scrubbed; the acp/lsp forwarding specs keep their MOCK_ECHO_ENV / LSP_FAKE_ECHO_ENV assertions with the split comments rewritten to merge-after-scrub. Docs (en+zh, re-recorded) and the owning Agent Notes updated; cordis api/services catalogs regenerated.
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.