Use when a change is written and "looks done" but has not had a hostile second pass before merge — especially diffs touching auth, money, migrations, concurrency, or anything the author is quietly unsure about. Spawns a fresh-eyes reviewer subagent that sees…
Use when a PR is open and green-but-blocked, or red on CI for reasons that smell like flake — a timed-out test runner, a transient network 500 in a setup step, a check that passed locally but failed in CI. Reach for this whenever someone says "this PR keeps…
Use when writing or reviewing code that meters API token usage, bills accounts, issues invoices, applies credit grants, or computes balances with the internal `billing` library — especially around retries, mid-cycle plan changes, cache-read vs cache-write…
Use when an API-credits checkout or paid-plan upgrade needs to be proven end-to-end against Stripe test mode — confirming a card charge actually creates the invoice and subscription in the right state, reproducing a "I paid but my credits didn't show up"…
Use when a specific fix that's already on main needs to land on a production/release branch without dragging along everything else — a hotfix to backport, a "cherry-pick this commit onto release-2.4", a "we need just that one PR on prod" request. Reach for…
Use when writing or editing code in this org's Python or JS/TS, especially before committing or opening a PR — and proactively the moment a diff adds an import, an except/catch, or any logging. Enforces the style rules Claude gets wrong by default: import…
Use when someone wants to compare two cohorts' retention or conversion, asks whether a difference between segments is "real" or "significant", wants retention curves for an A/B group or a launch vs control, or says one cohort "looks better" and needs the…
Use when a cloud bill already spiked and nobody knows why — storage or egress jumped, a specific bucket's cost ballooned, a cost-anomaly alert fired, or finance is asking "what changed this week?" Queries the billing export by service/bucket/region, diffs the…