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

# Properties Panel

> Configure node parameters using the properties panel.

# Properties Panel

The Properties Panel lets you configure any node's parameters. Select a node on the canvas to open it on the right side, or right-click a node and choose **Edit**.

## Parameter types

| Type            | Input        | Description                                                 |
| --------------- | ------------ | ----------------------------------------------------------- |
| `string`        | Text input   | Single-line text. Supports placeholders.                    |
| `text`          | Textarea     | Multi-line text. Used for system prompts and commands.      |
| `enum`          | Dropdown     | Pick from a predefined list of options.                     |
| `number`        | Number input | Numeric value with optional min/max/step constraints.       |
| `slider`        | Range slider | Numeric value with visual range. Shows min/max labels.      |
| `boolean`       | Toggle       | On/off switch.                                              |
| `stepper`       | +/− stepper  | Integer value with unit display (e.g., `30s`).              |
| `categories`    | Tag input    | Array of string labels. Used for Categorize node outputs.   |
| `tool_selector` | Checklist    | Select which tools from an MCP server to expose to the LLM. |

## Advanced parameters

Some parameters are collapsed under an **Advanced** section by default (e.g., `max_tokens` on LLM nodes). Click to expand.

## Saving changes

Parameter changes are applied immediately and reflected on the canvas. No save button needed — changes are part of the flow's current state and included in the next undo snapshot.