tooling-verify-api

Confirm a function, argument, option, type, callback, or CLI flag actually exists with the signature you think — before you call it. Use whenever you're about to use an API you're not certain of (a Repo/Ecto/Phoenix/Oban/Swoosh function, a mix task, a dependency's option, a runner/CLI flag), or any time you'd otherwise be guessing. Stops hallucinated functions before they're written.