DeepSeek++
Transform DeepSeek web into an AI agent workspace with bilingual UI, memory, projects, Skills, MCP, multimodal, browser control, conversation export, and automation.
Evidence shows: README explicitly states tool execution requires user confirmation (sandbox confirmation, Skill draft preview, memory import preview), browser control requires on-demand enablement, MCP config and keys stored locally and sync excludes sensitive info, permission changes recorded as no new permissions. Data flow transparency: README describes tool execution result display, diagnostic log export, local-first data. Dependency security: package.json has overrides and audit script, but no vulnerability scan results. External effects: tool execution has boundaries (e.g., web fetch only http(s)), but no specific permission list. Rollback: sync download rollback, but no tool execution rollback. Source attribution: publisher not verified, but README has version history and changelog. Deductions: no specific permission list, insufficient dependency security evidence, rollback limited to sync.
Evidence shows: README describes many stability fixes (streaming, tool execution, MCP connection), tests cover persistence compatibility, package.json has CI quality gates. Dependency availability: dependencies pinned, but no runtime availability evidence. Failure messages: README mentions error prompts (e.g., login missing, tool failure reason), tests verify error handling. Deductions: no runtime reliability evidence, dependency availability unverified.
Evidence shows: README clearly defines target users (DeepSeek users) and scenarios (multi-step tools, automation), capability boundaries clear (browser control only Chrome/Edge, multimodal requires Key), trigger precision (tool call auto-recognition, Skill slash trigger), environment fit (Chrome/Edge/Firefox, language switching). Deductions: no actual user feedback or scenario validation.
Evidence shows: README structure clear, with TOC, feature overview, install instructions, version changelog; naming stable (tool names like artifact_create); known limitations (e.g., browser control platform boundary); license Apache-2.0; version 1.14.0 and changelog; maintenance responsibility: CI and release process, but publisher unverified. Deductions: missing FAQ and concrete examples, maintenance responsibility unclear.
Evidence shows: output usability (export formats, artifact downloads), marginal value (extends DeepSeek functionality), cost-benefit (open source free, but requires Key and Native Host). Deductions: no actual usage effect or performance data.
Evidence shows: README describes features corresponding to test files (e.g., artifact tests), but no cross-validation; fact/inference separation: README distinguishes feature descriptions and version changes. Deductions: lack of third-party verification or independent testing.
- Publisher identity unverified; review code before installation.
- Extension has browser control and local command execution capabilities; grant permissions cautiously.
- Dependency security lacks vulnerability scan results; consider running npm audit.
What does this agent do, and when should you use it?
DeepSeek++ is an open-source browser extension for DeepSeek web, supporting Chrome, Edge, and Firefox. It adds a side panel for conversations, floating chat on any webpage, right-click text sending, and integrates MCP tools, long-term memory, Skills, system prompt presets, web search, web fetch, image/video multimodal analysis, browser control, saved items, downloadable artifacts, conversation export, and scheduled automation. The extension is local-first, storing data in the browser, with language selection for Simplified Chinese or English, while preserving user-created content in its original language. It also supports installing native hosts for Shell and multimodal capabilities, enabling local file access and OfficeCLI document processing.
DeepSeek++ runs in the browser, injecting into the DeepSeek web page. It provides a side panel with chat, supporting new sessions and streaming responses. It includes an MCP client for connecting remote/local MCP servers, automatically discovering and executing tools, and returning results to the same conversation. The memory system automatically saves and injects long-term memories. The Skills system supports built-in, custom, and GitHub/imported local skills. It enables web search and web fetch through tool calls. Browser control allows operating visible elements on selected tabs. Conversation export supports HTML, Markdown, and PDF formats, and generated artifacts can be downloaded. Automation tasks can be scheduled via cron/RRULE and executed in dedicated sessions.
- Users on Chrome or Edge who want to add memory, MCP tool calling, and automation to DeepSeek web.
- Users who need to run recurring tasks like daily news summaries or scheduled reports, with automated execution and tracking.
- Users who need to analyze images or videos within DeepSeek conversations and continue generation based on the analysis result.
- Users who want to export DeepSeek conversations to readable files for archiving, migration, or sharing.
- Users who want to persist project context and personal preferences as long-term memory and reuse across conversations.
- Users who need to quickly summarize, explain, or rewrite selected text on web pages via right-click and send it to DeepSeek.
What are this agent's strengths and limitations?
- Full MCP tool system with support for remote/local servers, auto-execution, and result rollback.
- Automatic memory saving and multi-factor injection reduces repeated context.
- Bilingual UI (Chinese/English) with preservation of user-generated content.
- Built-in OfficeCLI skills for document processing via Shell MCP.
- Conversation export to HTML/Markdown/PDF with attachment lists.
- DeepSeek web only; not usable with other chat platforms.
- Requires additional Native Host installations for local tools and multimodal features.
- Browser control is limited to Chrome/Edge; Firefox has limited support.
- Automation scheduling has a minimum interval of 15 minutes.
- Multimodal analysis requires OpenAI/Gemini API keys, potentially incurring costs.
How do you install or deploy this agent?
- Install from Chrome Web Store: visit https://chromewebstore.google.com/detail/deepseek++/kdmpkkahkhdmdhfkdihkopikgcocbpbf.
- After installation, open DeepSeek web (https://chat.deepseek.com). The DeepSeek++ side panel appears.
- For Shell MCP or local file tools, install Shell Native Host via
npx deepseek-pp-shell-host install --browser chrome --extension-id <extension_id>. - For multimodal analysis, run
npx deepseek-pp-multimodal-mcp install --browser chrome --extension-id <extension_id>and configure OpenAI/Gemini API keys in settings. - To build from source:
git clone https://github.com/zhu1090093659/deepseek-pp.git && cd deepseek-pp && npm install && npm run build, then load the dist directory manually.
How do you use this agent?
After installation, open DeepSeek web (https://chat.deepseek.com) and click the DeepSeek++ icon in the browser toolbar. The side panel allows you to:
- Use the 'Chat' page to send messages, create new sessions, and stream responses.
- Enable/disable tools like web search and web fetch under 'Capabilities > Tools'.
- Add MCP services under 'MCP' page; tools are discovered automatically.
- Manage memories in the 'Memory' page, which are saved automatically.
- Enable built-in Skills, create custom Skills, or import from GitHub under 'Skills'.
- Create automation tasks in the 'Automation' page with cron/RRULE expressions.
- Export conversations via buttons below DeepSeek replies, choosing HTML, Markdown, or PDF.
- After installing the multimodal host, attach images or videos to the input box.
How does this agent compare with similar options?
Similar to Claude Code in extensibility, but DeepSeek++ is a browser extension for DeepSeek web, while Claude Code is a CLI tool.