Every recipe up to this point hands you a repo. This one does the opposite: you bring the thing you have been building at 11pm, and we find out how much of it has to change.
What you build
Nothing new. You take your existing agent — LangGraph, the Claude Agent SDK, something bespoke and slightly embarrassing — and point its tool calls at the Gateway instead of directly at the tools.
The claim being tested is that this is a configuration change rather than a rewrite. Test it honestly, and tell us where it is not true. That feedback is worth more to the people building this than a successful run is.
Why it matters
A proof point you can carry back has to survive the question “yes, but does it work with what we actually have?” A demo built on scaffolding somebody else supplied does not survive it. Your own agent does.
Then make yourself discoverable
Once your agent is routing through the Gateway, register it so that other participants can find and call it. That is what makes the Lab multiplayer rather than a set of parallel single-player sessions — and it is the prerequisite for being the counterparty in somebody else’s cross-boundary recipe.