About Nodium: the WhatsApp API gateway for developers

Nodium is a gateway between your code and WhatsApp. It is published by By-Tech.io, a company based in Paris, and carries messages through Meta's official Cloud API: your backend receives each message by webhook and answers through a REST API. Nodium never decides what to reply.

Updated November 10, 2026Read as Markdown

What Nodium is

• A gateway: it carries messages and tool calls; it does not read them, transform them or answer them.
• An official integration: numbers are registered on Meta's WhatsApp Cloud API. There is no QR code connection and no unofficial session. See official vs unofficial.
• A Meta Tech Provider: your customers connect their own numbers through Meta's Embedded Signup, from a hosted link, and Meta bills them directly.
• Built for developers and software publishers: REST API, TypeScript SDK, command line, MCP server, OpenAPI 3.1, signed webhooks.

What Nodium is not

• Not an inbox for support teams, and not a chatbot or AI agent builder. If you want those, see Nodium and Wati.
• Not a provider of phone numbers: the number is yours, or your customer's.

Where your data lives

In the European Union: the service runs in Paris and the database is in Ireland. Secrets are encrypted, retention is configurable per plan, and a person can be erased through the API. The details are on the security page.

The company

• Publisher: By-Tech.io, a French simplified joint-stock company, 15 rue des Halles, 75001 Paris. Registration and VAT numbers are in the legal notice.
• Contact: contact@nodium.io.
• Service status: live status and 90-day history.
• Open packages: @nodium.io/whatsapp (TypeScript SDK) and @nodium.io/cli (command line).