# Inbound replies on WhatsApp (/docs/whatsapp/inbound-replies) > Let your AI agent reply automatically to messages customers send to your WhatsApp number. When a customer messages your WhatsApp number, your AI agent can reply automatically. This takes a one-time setup on your Meta account so Meta forwards incoming messages to OmniDimension. ## Before you start [#before-you-start] * Your WhatsApp number is imported in OmniDimension. * An agent is attached to the number. The agent's prompt and language decide how it replies. ## Activate inbound replies [#activate-inbound-replies] Right after you import a number, OmniDimension shows an "Activate replies" step. Pick one of the two methods. ### Method 1: Connect automatically (recommended) [#method-1-connect-automatically-recommended] Paste your Meta app secret and we set everything up for you. Find it in the Meta App Dashboard under App settings, then Basic. ### Method 2: Set it up yourself [#method-2-set-it-up-yourself] Prefer not to share your app secret? In the Meta App Dashboard, open WhatsApp, then Configuration: WhatsApp webhook configuration in the Meta App Dashboard 1. Next to **Webhook**, click **Edit**. Paste the **Callback URL** and **Verify token** shown in OmniDimension, then click **Verify and save**. 2. Next to **Webhook fields**, click **Manage**. In the popup that appears, subscribe to the messages field, then click **Done**. Meta verifies the callback the moment you click Verify and save. Once it is verified and **messages** is subscribed, replies start working. Subscribing to the **messages** field is required. Setting the callback URL on its own will not deliver any messages, this is the step people miss most often. ## Good to know [#good-to-know] * Replies use the agent attached to the number. Change how it answers by editing that agent's prompt and language. * The reply is sent from your own WhatsApp number through your Meta account. * Image and other media messages are handled separately, and support for them is expanding.