Tools

Sets up and audits i18n for React, Next.js and Vue apps: replaces hard-coded strings with message keys, checks that English and Chinese keys are complete and consistent, and verifies plurals and date and number formats, with a key audit script. Needs a local codebase and Python.

i18next's official CLI: finds hard-coded strings in JS/TS code, extracts translation keys, checks which locales are missing entries and syncs locale files; init --yes sets up non-interactively, and a bundled agent skill guides app internationalization. Needs a Node.js project using i18next.

Locize's official plugin: agents translate and review strings using your project's glossary, style guide and translation memory, and check new copy for banned terms; also bundles the Locize MCP and an i18next skill for developers. Needs a Locize account (free tier); browser auth or a personal token.