> ## Documentation Index
> Fetch the complete documentation index at: https://docs.zapbip.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Any app that supports MCP

> Connect any app that supports MCP to your WhatsApp.

## What works

| You can | Any MCP app |
| - | - |
| Send text, photos, video, audio and documents | Yes |
| Receive locations, contacts and reactions | Yes |
| Ask you with buttons or a list and wait | Yes |
| Start a conversation when you write first | Your message waits in the inbox |

## How it listens

Rung: Inbox. Nothing can wake the app from outside, so a message you send waits in the inbox until the app looks. The app asks zapbip if something new is waiting with `check_inbox`, and reads it.

To listen, the app asks you with `ask` or `wait_for_reply`. Each call returns pending after at most 50 seconds if you have not answered, and the app calls again until you do, with no time limit.

## Set up from zero

1. **Message the zapbip number on WhatsApp.** Send `new agent my-app`. [How to start](https://docs.zapbip.com/get-started/how-to-start.md) shows every message.

   WhatsApp: zapbip

2. **Paste the line into your app's AI.** zapbip answers with a line made for you:

   `Connect yourself to my WhatsApp with zapbip: read https://mcp.zapbip.com/i/zb_inst_<code> and follow the instructions.`

3. **Add the server.** In the app's MCP settings, the AI adds the zapbip address as a streamable HTTP server. The address holds a secret, so keep it private. If the app asks for a header instead, it sends the secret as `Authorization: Bearer <secret>`.

4. **Check the inbox from time to time.** The app calls `check_inbox` when it can, for example at the start of each task.

## Check it works

Ask the AI to send `✅ installed` on WhatsApp. When it arrives, the connection works.

WhatsApp: zapbip

Then write something on WhatsApp and ask the app to check the inbox: it reads your message.

For the address, the header and the tools, see [Connect any MCP client](https://docs.zapbip.com/developers/any-mcp-client.md).


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