Using Regex to Capture and Reuse Conversation Data

Introduction

Regex lets you detect and extract specific information directly from a conversation or email reply. By using named capture groups, you can turn what someone says into a variable you can reuse in webhooks, payloads, or across plugins in the same session.

How Regex Capture Works

When the AI Agent or contact says a line that matches your Regex pattern, the captured data is stored in a variable under the _regex namespace.

Example:

• Spoken line:

  “I got your email as john.doe@example.com. Is that correct?”

• Regex pattern:

I got your email as (?<__person_email>[^\\s,]+@[^\\s,]+\\.[^\\s,]+)\\.\\s+Is that correct

• Captured variable:

__person_email = "john.doe@example.com"

Saving Captured Data to the Call Session Context (CSC)

Captured values can be persisted for later use in the same session.

// Save captured email
<save __person_email as contact_email>

// Later in the session, use:
<contact_email>

Using Captured Data in a Webhook

You can reference captured values in the webhook URL or JSON body.

// URL example:
https://api.example.com/leads?email=<_regex.__person_email>

// Body example:
{
  "email": "<_regex.__person_email>",
  "source": "taalk"
}

This works the same way for webhook responses:

// Example API response
{ "first_name": "John" }

// Save the field
<save first_name as webhook_first_name>

// Reference later
<webhook_first_name>

If the response is a list:

{ "html": "[ { \"first_name\": \"John\" }, { \"first_name\": \"Ava\" } ]" }

// Save the first object’s first_name
<save 0.first_name as webhook_first_name>

End-to-End Example

1. Agent says: “I got your email as john.doe@example.com. Is that correct?”

2. Regex pattern captures the email → _regex.__person_email.

3. On success, plugin saves it: <save __person_email as contact_email>.

4. Webhook sends the email in JSON body.

5. Later, another plugin uses <contact_email>.