Block Types

Blocks are the building units of a chatbot flow. Every block belongs to one of four categories, visible in the block sidebar on the right of the canvas.

Bubbles

Bubble blocks send messages from the agent to the user. They render as chat messages in the conversation.

Block	Description
Text	Sends a text message. Supports rich formatting and variable references using {{variableName}} syntax.
Image	Sends an image file by URL.
Video	Embeds a video in the conversation.
Embed	Embeds an iframe or external content.
Audio	Sends an audio file by URL.
Adaptive Card	Sends a structured interactive card using the Adaptive Card schema. Supports form fields that save values into variables.

Inputs

Input blocks prompt the user for a response and capture it into a variable.

Block	Description
Text	Free-text input field.
Number	Numeric input with optional validation.
Email	Email address input with format validation.
Website	URL input.
Date	Date picker.
Phone	Phone number input.
Buttons	Presents a set of button choices. The selected option is captured as a variable value.
Pic choice	Image-based choice selection.
Payment	Payment collection input.
Rating	Star or numeric rating input.
File	File upload input.

Logic

Logic blocks control the flow of the conversation — branching, redirecting, waiting, and manipulating variables.

Block	Description
Condition	Branches the flow based on a condition. Evaluates a variable or expression and routes to different groups for true and false outcomes.
Set Variable	Assigns a value to a variable. The value can be a static string, a formula, or the output of a code expression.
Script	Executes a JavaScript snippet. Use to transform data, compute values, or call logic that cannot be expressed with other blocks.
Redirect	Redirects the user’s browser to a URL.
Wait	Pauses the flow for a specified duration before continuing.
Jump	Jumps to a specific group in the current flow without drawing an edge.
AB Test	Splits traffic between two paths at a configurable ratio for A/B testing.

Integrations

Integration blocks connect the chatbot to external services and AI models.

Block	Description
Webhook	Makes an HTTP request to an external URL and optionally saves the response into a variable.
Flow Agent	Hands off to an Agentic Flow agent and returns the result into the chatbot flow.
Voice Agent	Triggers a Voice Agent call.
DifyAI	Calls a GenAI flow (Dify) workflow or chatbot.
QR Code	Generates a QR code image from a URL or text value.