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Introduction

Grostify Connect publishes your REST API as tools that Claude, ChatGPT, a WhatsApp assistant and a chat on your website can use, each user with their own account.

On this page

Your customers already ask AI assistants about their orders, invoices and shipments. The answers live in your API. Grostify Connect turns that API into tools an assistant can call, and runs the whole layer in between: the MCP server, user sign in, credentials, limits and the WhatsApp and web chat channels.

You do not write or host an MCP server. You point Connect at your API, choose what to expose and Grostify reviews it before it goes live.

How it works

  1. Create an integration for your API and verify its domain. Connect only ever calls a domain you prove is yours.
  2. Configure how your users sign in: your own OAuth or OpenID Connect provider, or a personal API key per user.
  3. Import your OpenAPI spec or Postman collection. Each operation Connect can use becomes a tool.
  4. Describe, test and enable each tool in the channels you want: Claude, ChatGPT, WhatsApp or the web chat.
  5. Request a review. Grostify checks the integration and puts it live at its MCP address.
  6. Your users connect. They add the address in Claude or ChatGPT, write to your WhatsApp number or open the chat on your website, and sign in with their own account.
Text
Your user ──▶ Claude / ChatGPT / WhatsApp                      │  MCP call with a Connect token                      ▼       https://connect.grostify.com/t/acme/mcp                      │  GET with that user's own credential                      ▼            https://api.acme.com/v1/orders

Every call to your API carries the credential of the user who asked. An assistant only sees what that user can already see in your system.

What you need

To publish inYou need
Claude and ChatGPTAn HTTPS API on a public domain you control, an OpenAPI 3.0 or 3.1 document or a Postman collection, and a way for users to sign in (OAuth or OpenID Connect) or get a personal API key
WhatsAppAll of the above, plus a Meta business account and a phone number for WhatsApp
Web chatThe same as for Claude and ChatGPT, plus a website on your verified domain where you can paste a script

Note

Connect is invite only for now. Request access and we reply within one business day.

Where to go next

  • Quickstart: from your OpenAPI document to a tool working in Claude.
  • Key concepts: the words used across the dashboard and these docs.
  • WhatsApp assistant: answer your customers on your own number with data from your API.
  • Web chat: a chat button on your website that answers with data from your API.