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

# In-call SMS (Skill)

> Let your agent send SMS messages to the caller during a live phone call or web conversation.

The **In-call SMS** skill lets your agent **send an SMS to the caller during a live conversation** (phone or web).

Use it to text links, instructions, confirmations, or next steps while the caller is still on the line.

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## Video: In-call SMS (Skill)

<iframe className="w-full aspect-video rounded-xl" src="https://www.youtube.com/embed/BaRjb4JxLlo" title="Video: In-call SMS (Skill)" frameBorder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowFullScreen />

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## How it works

When In-call SMS is enabled:

* You choose an **SMS-enabled** phone number to send texts from.
* During the call, the agent can send SMS messages to the caller when it’s relevant (for example, when the caller asks for a link or written info).
* What the agent sends is primarily guided by your **Agent Prompt** (tell the agent what kinds of messages it’s allowed to text and when).

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## Prerequisites

Before using In-call SMS, you need:

* A connected **Twilio provider** in **Providers**
* A phone number that is **SMS-enabled** (text-capable) and available to select as the SMS sender

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## Enable In-call SMS on an agent

1. Go to **Agents** and select your agent.
2. On the **Basic Information** tab, find **Choose Skills**.
3. Click **In-call SMS** to add the skill.
4. The **Configure In Call SMS** dialog opens.

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## Configure In-call SMS

In the **Configure In Call SMS** dialog:

* **SMS number** (required)\
  Select the phone number the agent should send texts from during the call.

Click **Save** to apply the settings.

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## Tips

* **Tell the agent what to text (in the prompt)**\
  Add guidance like:
  * what types of links/info it can send
  * when it should offer to text something
  * what it should do if the caller says they can’t receive texts

* **Use a consistent sender number**\
  Using the same SMS-enabled number helps callers recognize your messages.

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## Where to go next

* Connect Twilio in **[Providers](/product/features/providers)**
* Manage and verify numbers in **[Numbers](/product/features/numbers)**