Area brief: what it means
By Soumen Sarkar · October 2026
An area brief is what a person or agent is told the first time they touch a part of the code: what's changing there now, what was decided, and what was tried.
An area brief puts the context of one part of the codebase in front of an agent before it changes anything. It answers the questions the agent would otherwise have to ask a person: is anyone working here, what must I follow, and what has already failed?
A good area brief covers:
- Being changed right now: by whom, the goal, the plan, and when it's expected.
- Decisions made here: the calls to follow, with their reasons.
- What changed this week.
- Approaches tried and dropped, so nobody tries them again.
- Open assumptions that nobody has confirmed yet.
For example, an agent opens a file in Billing · lib/billing. Before its first edit it reads that a teammate's agent is moving invoices to a new table, expected this afternoon; that the team decided to store money in integer cents; and that retrying webhooks inline was tried and dropped because it doubled charges. It builds toward the new table instead of around it.
You can keep a short area summary by hand in any repository. In Claude Code, Campfyrr writes the area brief automatically the first time a session reads or edits an area, naming the area from its folder. Recent decisions and ones still in use come first; one nobody has relied on for four months is marked "check it still holds".
The principle behind this: Keep moving: The work never waits, and neither do we.
Related: Work in progress · Decision · Assumption · Team record
Questions that use it
Move as one at agent speed. Nobody waits. Add Campfyrr to Claude: it briefs every agent before it touches the code, keeps assumptions and handoffs where the team can see them, and never takes your code (what it keeps).