Localization shouldn't be a copy-paste nightmare.
Traditional i18n workflows are broken. You add a feature, find the JSON file, copy the keys, paste them into a translator, fix the broken variables, and move them back.
It's slow. It's expensive. And it's where bugs are born.
But wait... can't Cursor just translate for me?
It can try. Here's what actually happens when LLMs meet i18n:
The Consistency Gamble
Ask your AI to translate 'Dashboard' three times. You'll get 'Panel', 'Control Center', and 'Overview'. Your terminology becomes a game of chance.
LangAPI: Same term = same translation. Always.
The Format Destroyer
LLMs speak fluent language but broken JSON. Missing quotes, mangled indentation, vanishing commas. Your linter screams. Git diffs become nightmares.
LangAPI: Format-preserving. Clean diffs, happy linter.
The Variable Assassin
{{username}} becomes {{nombre de usuario}}. {0} disappears. %s gets translated. Your app crashes with 'Hello, undefined!' errors.
LangAPI: Variables stay untouched. Every time.
LLMs are brilliant at understanding language. They're terrible at the boring stuff: format preservation, consistency, and respecting your code's structure. That's exactly what we built LangAPI to solve.
The Solution: The Agentic Way
Your IDE is now your Localization Lead.
LangAPI isn't just an API; it's a bridge between your local source code and the world's most powerful translation engines (Azure AI). By using the Model Context Protocol (MCP), your AI Agent can now "see" your code and handle the drudgery for you.
Why Developers Love LangAPI
Built for the way modern developers actually work.
Delta-Sync Logic
We never re-translate what's already done. We identify exactly what changed, saving you up to 90% on translation costs.
Context-Aware AI
Our agent reads your React/Vue/Svelte code to understand the meaning behind a key, ensuring "Home" is translated as a link, not a house.
Format Preservation
We respect your indentation, trailing commas, and key ordering. Your linter won't even notice we were there.
Zero Maintenance
No complex CI/CD setup required. Just plug the MCP server into Cursor or Claude Desktop and start syncing.
How It Works
From English to 20+ Languages in 3 Steps.
Connect
Add our MCP server to your IDE.
"I now have access to your /locales folder."Audit
Ask: "What languages are missing keys?"
"French and Japanese are missing 12 keys."Sync
Type: "@LangAPI sync all languages."
"Done. 12 keys synced across 5 files. (Cost: 180 credits)"See It In Action
One natural language command. All your translations synced.
Sync complete. Here's the summary:
| Language | Keys Translated | File |
|---|---|---|
| French (fr) | 12 | src/lang/fr.json |
| German (de) | 12 | src/lang/de.json |
Total: 24 keys translated across 2 languages
Credits used: 46 (balance: 144)
Pure Pay-As-You-Go. No Subscriptions.
We believe developers should only pay for what they use. No monthly "use it or lose it" fees. No expiring credits. Just a high-performance engine at a fair price.
The Developer Starter Pack
- 1,000 Free Trial Credits (One-time, no card required)
- Credits Never Expire
- Full Access to MCP Server & GitHub Actions
- Enterprise-Grade Azure AI Translation
- Context-Aware LLM Refinement
Works with your stack.
Seamless integration with the tools you already use.
AI Clients
- Cursor
- Claude Code
- Claude Desktop
- Windsurf
- VS Code (via MCP)
Frameworks
- Next.js (next-intl)
- i18next
- Vue-i18n
- Flutter (ARB), IOS/macOS (Strings/XCStrings)
File Formats
- .json
- .arb
- .strings
- .xcstrings
Ready to stop copy-pasting?
Join developers who've already automated their i18n workflow.