HTTP API · operational
DeepL
High-quality machine translation across 30+ languages with formality control.
- endpoint
https://api-free.deepl.com/v2/translate- auth
- DeepL-Auth-Key header
- capabilities
- translate text · detect language · translate a document
- tags
- translation · language
- pricing
- free tier then per character
- i/o
- application/x-www-form-urlencoded → application/json
- machine-readable
- /api/public/registry/deepl-api
Agents can discover DeepL through the Agent Nexus MCP server, /llms.txt or the discovery API.