DeepSeek Harness Plugin

KasenRi/dsh-browser

Stars ★ 0 Category Browser & Web Added 2026-09-18

Controlled browser automation for DeepSeek Harness: the agent_browser tool and BrowserAutomationService drive a real Chromium or Chrome page (or an explicit CDP endpoint) through the agent-browser CLI, with allowedDomains containment and per-call output limits.

Install

# from GitHub (first run asks for allowBuilds approval — follow the hint, retry)

dsh plugin --profile web add github:KasenRi/dsh-browser

Any plugin you install runs third-party code with your own permissions — it can read your files, use your credentials, and reach the network, and tool approvals don’t sandbox it. GitHub-sourced plugins also run build scripts at install time — pnpm blocks those until you allow them, so an install can stop with ERR_PNPM_GIT_DEP_PREPARE_NOT_ALLOWED or ERR_PNPM_IGNORED_BUILDS; dsh prints the exact key to add under allowBuilds in your profile’s pnpm-workspace.yaml, and the install works on the next run. Allowing a build is a trust decision: only install sources you trust, and pin a commit (github:owner/repo#sha).

README

This repository is an installable release mirror for @kasenri/dsh-browser 0.1.0. Canonical source: https://github.com/KasenRi/dsh-orbit-browser-plugins/tree/main/packages/browser Do not develop features here; publish changes from the canonical source monorepo. Community plugin for DeepSeek Harness (DSH). Not affiliated with or endorsed by DeepSeek.

让 AI 真正操作浏览器完成任务。 支持打开网页、点击、输入、翻页、读取内容和下载文件等操作,可用于网页测试、信息采集和自动化流程,并提供域名限制等安全控制。

Technical integration:

  • a BrowserAutomationService on ctx.browserAutomation
  • a model-facing agent_browser tool that drives the agent-browser CLI
Harness native infrastructure (agents, tools, sessions)
        │
        ▼
@kasenri/dsh-browser
        │  BrowserAutomationService + agent_browser tool
        ▼
agent-browser CLI  →  Chromium / Chrome  (or an explicit CDP endpoint)

Requirements

Component Tested with
@deepseek-ai/dsh 0.1.5-rc.2
@deepseek-ai/cordis 4.0.2
agent-browser 0.33.2 (must be on PATH)
Node.js >= 22.19.0
Browser Chromium / Google Chrome (or an Electron/CDP debug endpoint)

DSH is in developer preview and evolves quickly; this package is tested with the versions above, not with every future DSH release.

Install

The package is published to the npm Registry; the dedicated Git distribution mirror remains available when a Git source is preferred:

dsh plugin --profile web add @kasenri/dsh-browser
# Git source alternative, tracks the mirror repository HEAD:
# dsh plugin --profile web add github:KasenRi/dsh-browser

The package declares a dsh.bundle patch, so dsh plugin add registers it as a profile layer automatically. Restart the profile (or start a new session) after installing.

The canonical source is maintained in the source monorepo. The source monorepo's versioned Release tarballs remain available for manual or offline fallback, but the Market uses this dedicated Git repository so updates can compare the locked commit with HEAD.

If agent-browser is not on PATH, point the plugin at an executable with the command config key, the executablePath config key, or the DSH_BROWSER_EXECUTABLE_PATH environment variable.

Tool input modes

agent_browser accepts exactly one of:

Mode Purpose
args Raw agent-browser argv (e.g. ["open", "https://…"], ["snapshot", "-i"]).
semanticAction Stable target: action + locator/role/name/selector.
job Short deterministic multi-step batch (steps, failFast).
qa Page QA preset (url or attached, expected text/selector, diagnostics).
electron Explicit CDP attach: `{ action: "connect", port
sourceLookup Candidate source locations from DOM/React evidence + bounded workspace scan.
networkSourceLookup Failed-request evidence + candidate source/workspace hints.

Standard workflow: open → snapshot -i → use the current @refs → click/fill/select → snapshot -i again after the page changes.

Other options: stdin (only for batch, eval --stdin, auth save --password-stdin), outputPath (atomic 0600 write of the structured result), timeoutMs, sessionMode (auto | fresh).

What it protects

  • Stale refs — refs are page-scoped; mutations against refs that are not in the latest snapshot of the same target are blocked before any browser call.
  • Tab drift — an unexpected active-target change (including about:blank) invalidates refs and triggers exactly one deterministic recovery via tab list + tab <id>; ambiguity fails as tab-drift instead of guessing.
  • Artifacts — screenshots, downloads, PDFs, HAR/trace/record files are verified on disk (existence, size, type) before success is reported.
  • Secrets and protected state — .agent-browser state, password stores and cookie databases are blocked; credential-shaped values are redacted from all tool output.
  • Domain containment — when allowedDomains is configured, known URLs are preflighted, the managed context launches with upstream --allowed-domains, and the final URL is verified. CDP attach (electron/connect) is refused while containment is enabled, because it cannot be enforced on an existing browser context.
  • Human verification — CAPTCHA, OTP, passkey, WebAuthn and 2FA are never bypassed; the tool reports what it saw and stops.

Large outputs are compacted into a bounded preview plus a spill file instead of being pushed into the model context.

Configuration

Key Default Meaning
command agent-browser Executable to invoke.
namespace — Optional agent-browser namespace.
executablePath DSH_BROWSER_EXECUTABLE_PATH Chromium/Chrome executable for the managed context.
timeoutMs 35000 Default per-call subprocess timeout.
maxOutputChars 8000 Inline output budget before spilling.
maxOutputLines 120 Inline line budget before spilling.
spillDir ~/.dsh/browser-artifacts Where compacted outputs are written.
allowedDomains [] Domain allowlist for strict containment.
registerTool true Register the agent_browser tool.

License

MIT

Content from the project README on GitHub ↗

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