How do I connect Claude or ChatGPT to my account, and where is my API key?

The API + MCP add-on connects LetsBot to your own software through the API, and to assistants such as Claude and ChatGPT so they can read your chats, send messages and manage contacts. It costs $69.99 a month including VAT, works with any plan, and is available during the free trial.

Connect Claude

1. Add LetsBot from the Claude connector directory, or in Claude go to Settings → Connectors → Add custom connector and paste https://letsbot.net/mcp.
2. Sign in to your LetsBot account and approve access.

Connect ChatGPT

Open the LetsBot app in ChatGPT, click connect, then sign in and approve.

API key (for developers and tools like Cursor)

1. Open Integrations → Developers → Authentication Data (/panel/v2/api/credentials). The menu appears for the account owner once the add-on is active.
2. Click Reveal and copy the key. Send it in the Authorization: Bearer header.
3. Base URL: https://letsbot.net/api/v1. Full docs: letsbot.net/developers/api.

If someone you do not trust has seen the key, click Regenerate key; the old key stops working at once.

What happens next?

You can ask Claude or ChatGPT for tasks such as "summarise today's chats" or "send this message to this customer". Full guide: WhatsApp MCP.