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Security and data handling

Transport​

Use HTTPS when calling the API.

API keys​

  • Treat API keys like passwords
  • Never embed them in public client-side code
  • Prefer sending them via X-API-Key header (not query params)

Data handling​

  • Requests are not stored in a database by default
  • Translation results may be cached in Redis for a limited time (see Caching)
  • Server logs may contain error details

EU data residency​

The dedicated EU data residency endpoint (eu.langbly.com) routes translation processing through Google Cloud regions in EU member states. europe-west4 in the Netherlands is the configured default, not the only EU region. The temporary Redis cache is in Frankfurt and eligible translated responses expire after one hour.

See EU Data Residency for full details.

Compliance​

If you have specific compliance or retention requirements, contact support@langbly.com.