Every session starts with one question: what’s the budget?

After the bill, I wanted spending to be a decision I make at the start of a session, not something I find out about afterwards. So every Claude Code session I open now starts with one question.

The question

Mullet 2.2.0 adds a SessionStart hook called session-strategy. It’s opt-in:

mullet setup-claude --hooks session-strategy

When a session starts, the hook gives Claude a handful of local facts: how much of the daily and weekly envelope is left, how much of Claude’s own week is used, which preset is active and whether night mode is on. It also gives Claude a recommendation, and asks me two things in one short question: a budget in dollars for the session, and a delegation strategy.

Claude then records my answer:

mullet strategy set --budget 3 --delegation ladder
mullet strategy          # what is set, when, and when it expires
mullet strategy clear

The three strategies

Choice	What it means
ladder	Cheap and free models first, Claude last
claude-only	Claude Code alone, no cheaper workers
off	Nothing is delegated

What follows from the answer

While the answer is fresh, Mullet acts on it. mullet job plan uses the budget as the job’s spending cap when I haven’t passed --max-spend. A claude-only choice plans a job with one Claude Code worker and no ladder. off makes job plan refuse, and turns delegation off the way MULLET_DELEGATION=off always did: the MCP delegation tools refuse and the delegation hooks go quiet.

Flags on the command line still win, and the daily and weekly envelope still applies when the job runs, so a generous answer can’t get past it. The answer lasts 12 hours by default, long enough for a working day and short enough that yesterday’s choice doesn’t linger.

How it recommends

The recommendation follows a few plain rules, in code you can read. If there is no room left under the envelope, it suggests claude-only, or off if Claude’s own week is also running high. Otherwise it suggests ladder, with a budget equal to the default job cap or the room left under the envelope, whichever is smaller. If a strategy is already fresh, the hook tells Claude not to ask again.

Turning it off

If you’d rather not be asked, set this in your config and the hook goes silent:

session:
  ask_at_start: false
  strategy_ttl_hours: 12     # how long an answer stays in force

What it doesn’t do

The budget is a cap on each job. Nothing adds up the spend of several jobs inside one session. The daily and weekly envelope is what limits the total, which is why the question comes alongside it and doesn’t replace it.

The code is at https://github.com/tomgould/mullet-public.