The Agency Stack
A Switchy Space per client — the account's brain in one room.
Spinning this stack up creates a Switchy Space - your team chats together, @-mentions every model and MCP listed below with shared context, and that whole memory becomes its own MCP server inside Claude Code, Cursor, Claude Desktop, and ChatGPT for every teammate.
Heads up: this stack uses 4 MCPs. Pro is needed for unlimited MCP connections - Starter ships with 1.
The Switchy Space a small agency spins up for each client so the account's
context lives in one room instead of scattered across individual people's
chat histories. Sonnet 4.5 for positioning, strategy, and client-ready
copy; GPT-4.1 for long-form drafts and a different voice on outbound;
Gemini 2.5 Pro when you need to drop a 50-page brand book, RFP, or brief
in and get the takeaway back.
The agency-specific win is keeping model choice *per-message*, not
per-tool — your strategist picks one model for messaging and another for
volume copy without committing the whole shop to a vendor. Gmail and
Notion hold the durable account context (brand voice, the decisions, the
"do not say X" rules); Slack keeps the client-facing channel in sync;
Google Calendar makes booking the next check-in a one-line ask.
The failure mode this fixes: your account lead goes on holiday and nobody
else can reconstruct the thread. In a Switchy Space the client memory is
shared and survives — and because it's exposed as an MCP server, it shows
up inside every teammate's Claude Code, Cursor, and ChatGPT. One room per
client, one memory, every model.