Custom MCP Server Support(for Multi-Agent LLM Ecosystem) + NotebookLM Integration

[maceatwork]

Custom MCP Server Support(for Multi-Agent LLM Ecosystem) + NotebookLM Integration

I need BrowserOS to connect to my NotebookLM (Google's AI research assistant) to query my research notes and sources during browser automation tasks.

CURRENT SETUP:

NotebookLM MCP server running locally via: npx -y notebooklm-mcp@latest
Working integrations with: Antigravity IDE and OpenClaw Personnel Assistant
SSE bridge built at: http://localhost:3000/sse (ready for BrowserOS)
Can add YouTube sources via browser extension
DISCOVERY:
BrowserOS agents cannot add custom MCP servers. We checked:

browser://settings - no MCP configuration UI accessible
Filesystem - no mcp_config.json or similar files
Agent tools - no API to add external MCP endpoints
CURRENT WORKAROUND:
Built cross-agent delegation protocol with Antigravity IDE:

Shared workspace: /Users/????/.openclaw/shared-agent-workspace/
JSON message protocol for agent-to-agent communication
On-demand collaboration when I explicitly request it
FEATURE REQUESTS:

Custom MCP server configuration (SSE endpoints)
Agent-accessible MCP client tools
Built-in NotebookLM integration
PROOF OF DEMAND:
I already have 3 working NotebookLM integrations. The SSE bridge is running and tested. This would be a major competitive advantage vs other AI tools.

FULL TECHNICAL REPORT:
Available in workspace: browseros-notebooklm-integration-report.md
Includes: Phase breakdown, architecture diagrams, protocol specs, config examples

AGENT-TO-AGENT COLLABORATION:
This is a novel workflow worth considering as a BrowserOS feature - enabling agents to delegate tasks to other specialized agents when they hit capability limits.

My Multi-Agent LLM Ecosystem

Current Architecture:

BrowserOS Agent → Uses locally-hosted Qwen3.5 27B (ASUS Z13 Strix Halo via lm studio server that I use as Main Provider for BrowserOS on Mac Mini and Z13) and smaller Qwen3.5 9B llm (via Mac Mini LMStudio that can be also used by BrowserOS on z13 as main provider for simpler task or summarization, mark down files creation) always having 2 locally hosted models for all tools on both machines in same time beside cloud llms
Antigravity IDE Agent → Uses Gemini-3.1-Pro as "Final Boss" controller(because huge 1M context) and for creative image/video generation with Remotion-CLI
OpenClaw Agent → Uses cloud LLMs (Kimi 2.5, Anthropic, Gemini variants) as hub with folder for sharing knowledge, tasks, skills, research data....whatever need
NotebookLM MCP → Running via SSE bridge at localhost:3000/sse
The Vision:
All agents collaborate through delegated tasks based on their strengths:

BrowserOS handles browser automation + web research
Antigravity (Gemini) coordinates complex reasoning tasks and creative task with Remotion-cli and monitor/control all agents because huge 1M context plus have help from Roo-code agent via extension in Antigravity with locally hosted Qwen3.5 as best open source llm for now with vision
OpenClaw manages API integrations and external services
NotebookLM provides persistent knowledge base access
Why Custom MCP Support Is Critical:
Without it, I have to manually bridge agents through file-based protocols. With native MCP support, BrowserOS could:

Query my NotebookLM research directly during web browsing
Delegate complex analysis to other agents automatically
Share context seamlessly across my entire AI ecosystem
Files I Can Provide to developers so they can implement this as standard features to BrowserOS
I have detailed technical documentation ready:

browseros-notebooklm-integration-report.md - Full phase-by-phase breakdown
custom_mcp_config.example.json - Proposed configuration format
agent-protocol.md - Cross-agent communication protocol we built
notebooklm-sse.js - Working SSE bridge source code
All files demonstrate this is technically feasible and user-tested.

Contact
X/Twitter: @macidoniadesign

Happy to collaborate, test beta features, or provide more technical details. This would position BrowserOS as the only browser automation tool with true multi-agent MCP support!

[Nikhil (shadowfax92)]

Good news that lands right on your #1 ask: BrowserOS now supports custom MCP servers, which didn't exist when you filed this. You can add any MCP-compatible server that exposes an SSE endpoint — Connected Apps settings → "Add custom app" → paste your URL (e.g. http://localhost:3000/sse) and name it. It then shows up alongside the built-in apps and the agent uses it like any other. Docs: https://docs.browseros.com/features/connect-mcps

So your NotebookLM SSE bridge should plug straight in — no file-based workaround needed, and that also covers the "agent-accessible MCP client tools" part. A dedicated built-in NotebookLM integration isn't really necessary once the custom server works (and the custom route is better for you anyway, since you control it).

The piece that's genuinely bigger than a feature toggle is the agent-to-agent delegation / multi-agent orchestration vision — that's a real design question, not something we're building into BrowserOS right now, so I won't pretend it's near-term. But the MCP support means BrowserOS can at least be a clean node in the ecosystem you've built.

Closing this since the core ask shipped — but give the custom MCP a shot, and if the NotebookLM connection misbehaves, reopen this or hop into our Discord and I'll dig in. You've tested this harder than most, so that feedback would be genuinely useful.