DeepSeek web chat gets an unofficial agentic overhaul

What it does DeepSeek++ is a browser extension for Chrome, Edge, and Firefox that augments the official DeepSeek web chat with a sidebar agent workspace. It adds tool calling, web search, page fetching, and multi-step autonomous execution that survives page refreshes. On top of that, it layers long-term memory, reusable Skills triggered by / commands, and scheduled automation tasks in isolated sessions.

The interesting bit It treats the web UI as a thin client and rebuilds the missing agent infrastructure around it: MCP servers, local Shell native messaging to orchestrate OfficeCLI document tools, and a floating whale pet that reacts to model state. It even self-throttles its request cadence to dodge the platform’s anti-abuse checks during long agentic loops.

Key highlights

• MCP tool integration with remote or local services, supporting agent-style continuous execution that chains calls and folds completed steps into collapsible sections.
• Built-in web search and page fetching that feed results back into the same conversation automatically.
• Long-term memory with four types (user, feedback, topic, reference), auto-injected by relevance, frequency, and pin weight.
• Skill system with built-in presets, custom creation, and GitHub imports; triggered via / autocomplete in chat.
• OfficeCLI document toolchain for local .docx/.xlsx/.pptx manipulation via Shell MCP native messaging.

Caveats

• It is not a standalone client; the sidebar, tool execution, and automation all rely on the official DeepSeek web UI’s login state and session.
• Local OfficeCLI document manipulation requires a native host binary matched to your OS and architecture, and the skill will halt if your binary only supports hosted AI generation instead of scriptable commands.

Verdict Worth a look if you live in the DeepSeek web UI and want it to remember projects, call tools, and run scheduled tasks without opening another app. Skip it if you need a standalone client or a lightweight chat wrapper—this is essentially a heavy aftermarket chassis bolted onto the official page.