i1n

Your app in every language. One command.

Localization as code. Push your translation keys, AI translates to 182 languages, pull type-safe TypeScript definitions. Built for developers, AI agents, and product teams.

Free forever · No credit card · i1n.ai

Why i1n?

Traditional i18n means dozens of JSON files, zero type safety, hours of copy-pasting, and deploys that break at 2 AM. Existing tools charge $144+/mo and require browser-based workflows.

i1n is different:

• One command — i1n push --translate es,fr,ja and you're done
• Type-safe — auto-generated i1n.d.ts with full IDE autocomplete
• AI-native — MCP server for Cursor, Claude Code, Windsurf. Your agent handles i18n for you
• Zero migration — Bridge Mode wraps your existing i18next/next-intl/vue-i18n
• 5x cheaper — Free tier included. Pro at $29/mo vs Lokalise at $144/mo

📦 Install

# To use the CLI (global)
npm install -g i1n

# To use the SDK + types (in your app)
npm install i1n

# Local CLI usage (optional)
npm install -D i1n

Supports npm, pnpm, yarn, and bun.

🏁 Quick Start

# 1. Initialize (auth + auto-detect setup)
i1n init

# 2. Push your translation keys
i1n push

# 3. Pull translations + auto-generated TypeScript types
i1n pull

✨ Key Features & Commands

🛠️ i1n init

Interactive setup that prepares your workspace.

• Authenticates via API key.
• New? If you don't have a key yet, the CLI provides clear guidance on how to get started.
• Auto-detects frameworks (Next.js, Vite, Expo, Flutter, Rails, etc.).
• Saves configuration to i1n.config.json (automatically ignored via .gitignore).
• AI Orchestration: Optionally sets up rules for your AI coding tools.

⬆️ i1n push

Syncs your local translations to i1n.

• Detects new keys and source changes.
• Smart Translate: Offers to translate missing keys with a cost estimate before proceeding.
• Efficient caching layer — repeated translations cost a fraction of fresh ones.
• Three-way diff — push only sends the (key, lang) pairs you actually changed, never overwriting edits made via the dashboard or by other teammates. See Team workflow for the full conflict model.

Flags:

• --translate [langs] — trigger AI translation after push (e.g. --translate es,fr,ja)
• --strategy <mode> — how to handle real conflicts: interactive (default in TTY), ours, theirs, abort
• --force — shorthand for --strategy ours (overwrite the server with your local values; destructive)

⬇️ i1n pull

Downloads translations and generates type-safe IDs.

• Updates local locale files in your configured format.
• Generates i1n.d.ts for full IDE autocomplete.

📊 i1n limits

Real-time usage tracking.

• View your current plan and credit usage.
• Monitor active language slots and available capacity.

✅ i1n check

Catch broken translations before they ship. Built for CI.

• Detects missing keys per language, broken interpolation placeholders ({{count}} lost in translation), empty values, and malformed files.
• --min-coverage 95 fails the build when translation coverage drops below your threshold.
• --json for tooling. Exit codes: 0 clean, 1 errors found, 2 config problem.
• 100% offline — no API calls, no secrets needed in CI.

# .github/workflows/ci.yml
- name: Validate tr

... [View full README on GitHub](https://github.com/pakvothe/i1n-cli#readme)