For developers, platforms & AI

Bilingual documents as an API — and as a tool for AI agents.

Generate, fill and sign documents programmatically from your PropTech/HR platform — or let AI assistants call DUOLEXX via the MCP server.

Clear endpoints, API keys, webhooks — self-serve instead of enterprise gatekeeping.

Your AI calls DUOLEXX instead of hallucinating legal text.

Authoritative language + translation, signature with hash — not generic text.

35+ document typesEU hostingcryptographically sealed

API & MCP

Quota included in Pro, usage-based beyond. Request an API key and get started.

An AI writes text fast. That doesn't make it legally sound, bilingual and ready to sign. That's exactly the difference.

Every document follows the law of the chosen country — researched clauses, not a generic template from the web.

The binding version in the legal language, alongside an understandable translation. A chat rarely delivers both, soundly, at once.

Two-party signature with a SHA-256 integrity proof — provable that both signed the same wording.

PDF, signature, archive and share link in one flow — an AI chat only hands back raw text.

Choose a region and document type — every template follows local law.

Simple questions instead of legalese — your document builds live in two languages.

Pay once and you're done: download, archive and share your PDF.

Take a look at the API and MCP server.