The **is‑cuid** package provides a tiny helper function that checks whether a given string matches the format of a CUID (Collision‑Resistant Unique Identifier). It exports a single `isCuid(value)` call that returns `true` or `false`; the library is now deprecated in favor of `cuid.isCuid`. It’s intended for Node.js developers who need a quick way to validate CUID strings.