# 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.

## 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](https://nodium.io/en/guides/official-vs-unofficial-whatsapp-api).
- A **Meta Tech Provider**: your customers connect their own numbers through Meta's Embedded Signup, from a [hosted link](https://nodium.io/en/features/embedded-signup), 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](https://nodium.io/en/compare/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](https://nodium.io/en/security).

## 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](https://nodium.io/en/legal/notice).
- Contact: contact@nodium.io.
- Service status: [live status and 90-day history](https://nodium.io/en/status).
- Open packages: [@nodium.io/whatsapp](https://www.npmjs.com/package/@nodium.io/whatsapp) (TypeScript SDK) and [@nodium.io/cli](https://www.npmjs.com/package/@nodium.io/cli) (command line).

## Frequently asked questions

### Who is behind Nodium?

Nodium is published by By-Tech.io, a company registered in Paris. Its legal details are in the legal notice.

### Is Nodium an official WhatsApp partner?

Nodium is a Meta Tech Provider: it uses Meta's official WhatsApp Cloud API and onboards businesses through Meta's Embedded Signup.

### Does Nodium read my customers' messages?

No. Nodium carries messages between WhatsApp and your backend; it does not read, transcribe or answer them.

Updated 2026-11-10 · https://nodium.io/en/about