Product 14
The Collective Brain MCP Server
Your operational stack exposed as a remote tool server over Tailscale. Any MCP client can consult the Brain from anywhere — not just sessions opened inside its folder.
The team that delivers it
What it is
Your operational stack, exposed as a remote tool server over Tailscale. Any MCP client can consult the Brain (standing briefs, the QMS dossier, the financial reconstructions, the marketing intelligence) from anywhere, not just from a session opened inside the Brain folder.
Built for
Nigel's own use across devices and clients, so the Brain stops being a folder you must be inside and becomes a service the company calls.
Who else could use it
Founders who already maintain a second-brain markdown setup (Obsidian, Notion-export, plain repo) and want their AI to query it as a tool rather than re-paste it into every chat. Particularly useful for operators running multiple businesses where the contexts need to stay distinct.
What they get
The MCP server, the deployment recipe (Tailscale plus a plain VM), and the structure pattern that makes a Brain queryable.
Maturity
Customer 1 (Nigel internal) shipped and running. Productisation is mostly documentation; the server itself is generic.
Pricing posture
One-time licence plus optional managed hosting. Or done-for-you setup engagement.
Lives at
build-log.ts: Apr 'The Brain MCP server'. Code: ~/brain-mcp/.
What we'll be writing about it
- origin
When the brain folder stopped being a folder and started being a service
Why we exposed the operating stack over Tailscale, and the moment it stopped feeling like a place to sit inside.
For: Founders running multiple businesses with shared context
- mechanism
How an MCP client consults the brain — and what it costs
What the MCP server exposes, what the call shape looks like, and why caching makes per-query costs tiny.
For: Operators thinking about MCP architecture for their own stacks
- transformation
What changes when 'the company knows that' is a tool call away
Decisions made faster, drift caught earlier, and what a multi-business operator does with one shared brain.
For: Multi-business founders and knowledge-management leads