deepseek-pp
DeepSeek++ is an open-source browser extension for Chrome, Edge, and Firefox that extends DeepSeek's web interface with AI agent capabilities including MCP tool integration, persistent memory, skill workflows, web search, conversation export, and browser automation. It runs locally with no backend service and is licensed under Apache 2.0.
Key facts
Objective fields from the source. Values we can't verify are shown as “Unknown” rather than guessed.
| Field | Value |
|---|---|
| Repository | zhu1090093659/deepseek-pp |
| Owner | zhu1090093659 |
| Primary language | TypeScript |
| License | Apache-2.0 — OSI-approved |
| Stars | 1.2k |
| Forks | 157 |
| Open issues | 5 |
| Latest release | v1.0.9 (2026-07-08) |
| Last updated | 2026-07-08 |
| Source | https://github.com/zhu1090093659/deepseek-pp |
What deepseek-pp is
TypeScript-based browser extension built on React and WXT framework that injects agentic capabilities into DeepSeek's web UI. Supports Model Context Protocol (MCP) for tool execution, native messaging for multimodal analysis (image/video via OpenAI/Gemini APIs), browser control via web extension APIs, and local persistence of configurations, memories, and project context.
Get the deepseek-pp source
Clone the repository and explore it locally.
git clone https://github.com/zhu1090093659/deepseek-pp.gitcd deepseek-pp# follow the project's README for install & configurationNeed it deployed, integrated, or customized instead? DEV.co ships production installs.
Best use cases
Implementation considerations
- Install from Chrome Web Store or build locally from GitHub source; requires manual MCP server configuration for each tool integration.
- All user data (memories, skills, conversations, MCP configs) stored in browser IndexedDB/localStorage; browser profile deletion or storage clearing will erase all data.
- Multimodal features (image/video analysis) require separate OpenAI and/or Gemini API keys configured by end-user in settings; no bundled credentials.
- Browser control feature limited to Chrome/Edge with appropriate web extension permissions; Firefox and sandboxed environments may have restricted DOM/action capabilities.
- No built-in backup/restore mechanism; users must manually export conversations and saved snippets to preserve data across browser resets or device migrations.
When to avoid it — and what to weigh
- Centralized Team Collaboration Required — If your team needs shared workspaces, role-based access control, audit trails, or centralized data governance. DeepSeek++ stores all data locally in browser storage and does not provide backend multi-user synchronization.
- Non-DeepSeek Model Dependency — Extension is purpose-built for DeepSeek's web interface. If you need a generic AI agent framework supporting Claude, GPT-4, or other model APIs natively, consider alternatives like Open WebUI or LM Studio.
- Cross-Device Sync Required — No cloud backend means configurations, memories, and conversations exist only on the device where they were created. If users need seamless access across multiple devices, this is not a fit.
- Regulated/Compliance-Heavy Environments — If your organization requires formal vendor security audits, data residency guarantees, SOC 2 certification, or PII handling policies, the local-first single-developer model may not satisfy procurement requirements.
License & commercial use
Apache License 2.0 (OSI-compliant permissive license). Allows commercial use, modification, and redistribution under Apache 2.0 terms including liability disclaimer and attribution requirements.
Apache 2.0 permits commercial use without license fee. Organizations may run, modify, and bundle DeepSeek++ for internal or external commercial purposes provided they include Apache 2.0 license text and comply with patent indemnity clauses. Requires legal review for proprietary derivative distribution or rebranding.
DEV.co evaluation signals
Editorial assessment — not user reviews. Directional, with an explicit confidence level.
| Signal | Assessment |
|---|---|
| Maintenance | Active |
| Documentation | Adequate |
| License clarity | Clear |
| Deployment complexity | Low |
| DEV.co fit | Good |
| Assessment confidence | High |
All sensitive data (API keys for OpenAI/Gemini, MCP credentials) stored unencrypted in browser local storage; loss of device or browser profile exposes credentials. Extension requests native messaging permissions for multimodal processing; review host application trustworthiness. No encrypted sync or audit logging. Code is open-source and auditable on GitHub but single-author review model. Multimodal analysis sends images/videos to external APIs (OpenAI, Gemini) under user-provided credentials; review terms of service for your use case.
Alternatives to consider
Open WebUI
Self-hosted LLM UI supporting multiple model backends (Ollama, OpenAI, etc.) with persistent memory and local-first architecture. Better for teams seeking backend flexibility and cross-device sync via self-hosted server.
Claude Desktop / Artifacts
Native Claude agent with built-in artifact rendering, code execution sandbox, and official tool ecosystem. Simpler setup but tied to Claude API and less extensible for custom MCP integrations.
LangChain / LlamaIndex Browser Extension + Custom Backend
Programmable framework for building custom AI agent workflows with tool calling, memory, and scheduling. Requires engineering effort but offers maximum flexibility and team deployment options.
Build on deepseek-pp with DEV.co software developers
Install DeepSeek++ from Chrome Web Store or build from GitHub. For MCP integration, team deployment, or custom AI workflows, explore our AI Application Development services.
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deepseek-pp FAQ
Can I use DeepSeek++ without a DeepSeek account?
Does DeepSeek++ sync my data to a cloud backend?
What MCP servers are pre-configured?
Can I use DeepSeek++ on Firefox?
Software developers & web developers for hire
DEV.co is a software development agency delivering custom software development services to companies building on open source. Our software developers and web developers design, integrate, and ship production systems — spanning web development, APIs, AI, data, and cloud. If deepseek-pp is part of your mcp servers roadmap, our team can implement, customize, migrate, and maintain it.
Ready to Extend DeepSeek into a Full AI Agent Workspace?
Install DeepSeek++ from Chrome Web Store or build from GitHub. For MCP integration, team deployment, or custom AI workflows, explore our AI Application Development services.