Feature
Name validation rules
One set of rules in the browser and on the server: lowercase letters, digits, -, _ and ., at most 214 characters, not scoped.
A Name starts with a lowercase letter or digit and uses only lowercase letters, digits, -, _ and .. It has at most 214 characters (npm’s limit) and cannot start with @: scoped names are not supported.
A Name with -, _ or . also gets a PyPI normalization warning, because PyPI treats those characters as the same.
More features
All features →- 01
Five Registries in one Check
npm, Homebrew Formulae, Homebrew Cask, PyPI and GitHub are asked in parallel; you get one Registry result per Registry.
- 02
Four Registry statuses
Every Registry result is Available, Taken, Error or Rate limited, so “unknown” is never shown as “free”.
- 03
Suggestions from a Provider
When a Name is Taken, pick a Provider and get 8 Suggestions: Claude API, OpenAI API, or Claude, Codex or Copilot through an MCP bridge.