sieve
every coding assistant i used forgot the rules i just taught the last one. sieve is one file that teaches all of them the same habits.
i was running claude code, cursor, and codex on the same project in the same week. every one of them needed the same reminders. write a test first. review before moving on. don't say something is done until it's actually verified. i was typing the same rules into three different chat windows like a broken record.
the alternative wasn't much better. some tools let you drop in one giant instructions file, but then every task made the assistant reread the whole thing, rules for problems it wasn't even touching.
sieve keeps the guardrails always on and small, and only pulls in the extra how-to guides when a task actually needs them. one command sets it up in a project, and it works the same whether you're in claude code, cursor, codex, or something else.
it's early. alpha, growing, still mostly me using it every day and fixing what breaks. but the habit it's teaching, verify before you say it's done, is the same one i keep needing myself.