AI-Studio/app/MindWork AI Studio/Plugins/assistants

Assistant Plugin Reference

This folder keeps the Lua manifest (plugin.lua) that defines a custom assistant. Treat it as the single source of truth for how AI Studio renders your assistant UI and builds the submitted prompt.

Table of Contents

• Assistant Plugin Reference
  • How to Use This Documentation
  • Directory Structure
  • Structure
    • Minimal Requirements Assistant Table
    • Supported types (matching the Blazor UI components):
  • Component References
    • TEXT_AREA reference
    • DROPDOWN reference
    • BUTTON reference
      • Action(input) interface
    • BUTTON_GROUP reference
    • SWITCH reference
    • COLOR_PICKER reference
  • Prompt Assembly - UserPrompt Property
  • Advanced Prompt Assembly - BuildPrompt()
    • Interface
    • input table shape
    • Using meta inside BuildPrompt
      • Example: iterate all fields with labels and include their values
      • Example: handle types differently
    • Using profile inside BuildPrompt
      • Example: Add user profile context to the prompt
  • Advanced Layout Options
    • LAYOUT_GRID reference
    • LAYOUT_ITEM reference
    • LAYOUT_PAPER reference
    • LAYOUT_STACK reference
  • Useful Lua Functions
    • Included lua libraries
    • Logging helpers
      • Example: Use Logging in lua functions
    • Date/time helpers (assistant plugins only)
      • Example: Use Logging in lua functions
  • General Tips
  • Useful Resources

How to Use This Documentation

Use this README in layers. The early sections are a quick reference for the overall assistant manifest shape and the available component types, while the later ... reference sections are the full detail for each component and advanced behavior.

When you build a plugin, start with the directory layout and the Structure section, then jump to the component references you actually use. The resource links at the end are the primary sources for Lua and MudBlazor behavior, and the General Tips section collects the practical rules and gotchas that matter most while authoring plugin.lua.

Directory Structure

Each assistant plugin lives in its own directory under the assistants plugin root. In practice, you usually keep the manifest in plugin.lua, optional icon rendering in icon.lua, and any bundled media in assets/.

.
└── com.github.mindwork-ai.ai-studio/
    └── data/
        └── plugins/
            └── assistants/
                └── your-assistant-directory/
                    ├── assets/
                    │   └── your-media-files.jpg
                    ├── icon.lua
                    └── plugin.lua

Structure

• ASSISTANT is the root table. It must contain Title, Description, SystemPrompt, SubmitText, AllowProfiles, and the nested UI definition.
• UI.Type is always "FORM" and UI.Children is a list of component tables.
• Each component table declares Type, an optional Children array, and a Props table that feeds the component’s parameters.

Example: Minimal Requirements Assistant Table

ASSISTANT = {
    ["Title"] = "",
    ["Description"] = "",
    ["SystemPrompt"] = "",
    ["SubmitText"] = "",
    ["AllowProfiles"] = true,
    ["UI"] = {
        ["Type"] = "FORM",
        ["Children"] = {
          -- Components
        }
    },
}

Supported types (matching the Blazor UI components):

• TEXT_AREA: user input field based on MudTextField; requires Name, Label, and may include HelperText, HelperTextOnFocus, Adornment, AdornmentIcon, AdornmentText, AdornmentColor, Counter, MaxLength, IsImmediate, UserPrompt, PrefillText, IsSingleLine, ReadOnly, Class, Style.
• DROPDOWN: selects between variants; Props must include Name, Label, Default, Items, and optionally ValueType plus UserPrompt.
• BUTTON: invokes a Lua callback; Props must include Name, Text, Action, and may include Variant, Color, IsFullWidth, Size, StartIcon, EndIcon, IconColor, IconSize, Class, Style.
• BUTTON_GROUP: groups multiple BUTTON children in a MudButtonGroup; Children must contain only BUTTON components and Props may include Variant, Color, Size, OverrideStyles, Vertical, DropShadow, Class, Style.
• LAYOUT_GRID: renders a MudGrid; Children must contain only LAYOUT_ITEM components and Props may include Justify, Spacing, Class, Style.
• LAYOUT_ITEM: renders a MudItem; use it inside LAYOUT_GRID and configure breakpoints with Xs, Sm, Md, Lg, Xl, Xxl, plus optional Class, Style.
• LAYOUT_PAPER: renders a MudPaper; may include Elevation, Height, MaxHeight, MinHeight, Width, MaxWidth, MinWidth, IsOutlined, IsSquare, Class, Style.
• LAYOUT_STACK: renders a MudStack; may include IsRow, IsReverse, Breakpoint, Align, Justify, Stretch, Wrap, Spacing, Class, Style.
• SWITCH: boolean option; requires Name, Label, Value, and may include Disabled, UserPrompt, LabelOn, LabelOff, LabelPlacement, Icon, IconColor, CheckedColor, UncheckedColor, Class, Style.
• COLOR_PICKER: color input based on MudColorPicker; requires Name, Label, and may include Placeholder, ShowAlpha, ShowToolbar, ShowModeSwitch, PickerVariant, UserPrompt, Class, Style.
• PROVIDER_SELECTION / PROFILE_SELECTION: hooks into the shared provider/profile selectors.
• WEB_CONTENT_READER: renders ReadWebContent; include Name, UserPrompt, Preselect, PreselectContentCleanerAgent.
• FILE_CONTENT_READER: renders ReadFileContent; include Name, UserPrompt.
• IMAGE: embeds a static illustration; Props must include Src plus optionally Alt and Caption. Src can be an HTTP/HTTPS URL, a data: URI, or a plugin-relative path (plugin://assets/your-image.png). The runtime will convert plugin-relative paths into data: URLs (base64).
• HEADING, TEXT, LIST: descriptive helpers.

Images referenced via the plugin:// scheme must exist in the plugin directory (e.g., assets/example.png). Drop the file there and point Src at it. The component will read the file at runtime, encode it as Base64, and render it inside the assistant UI.

Component	Required Props	Optional Props	Renders
TEXT_AREA	Name, Label	HelperText, HelperTextOnFocus, Adornment, AdornmentIcon, AdornmentText, AdornmentColor, Counter, MaxLength, IsImmediate, UserPrompt, PrefillText, IsSingleLine, ReadOnly, Class, Style	MudTextField
DROPDOWN	Name, Label, Default, Items	IsMultiselect, HasSelectAll, SelectAllText, HelperText, OpenIcon, CloseIcon, IconColor, IconPositon, Variant, ValueType, UserPrompt	MudSelect
BUTTON	Name, Text, Action	Variant, Color, IsFullWidth, Size, StartIcon, EndIcon, IconColor, IconSize, Class, Style	MudButton
SWITCH	Name, Label, Value	Disabled, UserPrompt, LabelOn, LabelOff, LabelPlacement, Icon, IconColor, CheckedColor, UncheckedColor, Class, Style	MudSwitch
PROVIDER_SELECTION	None	None	internal
PROFILE_SELECTION	None	None	internal
FILE_CONTENT_READER	Name	UserPrompt	internal
WEB_CONTENT_READER	Name	UserPrompt	internal
COLOR_PICKER	Name, Label	Placeholder, ShowAlpha, ShowToolbar, ShowModeSwitch, PickerVariant, UserPrompt, Class, Style	MudColorPicker
HEADING	Text	Level	MudText Typo="Typo.<h2|h3|h4|h5|h6>"
TEXT	Content	None	MudText Typo="Typo.body1"
LIST	Type, Text	Href	MudList
IMAGE	Src	Alt, Caption,Src	MudImage
BUTTON_GROUP	None	Variant, Color, Size, OverrideStyles, Vertical, DropShadow, Class, Style	MudButtonGroup
LAYOUT_PAPER	None	Elevation, Height, MaxHeight, MinHeight, Width, MaxWidth, MinWidth, IsOutlined, IsSquare, Class, Style	MudPaper
LAYOUT_ITEM	None	Xs, Sm, Md, Lg, Xl, Xxl, Class, Style	MudItem
LAYOUT_STACK	None	IsRow, IsReverse, Breakpoint, Align, Justify, Stretch, Wrap, Spacing, Class, Style	MudStack
LAYOUT_GRID	None	Justify, Spacing, Class, Style	MudGrid
More information on rendered components can be found here.

Component References

TEXT_AREA reference

• Use Type = "TEXT_AREA" to render a MudBlazor text input or textarea.
• Required props:
  • Name: unique state key used in prompt assembly and BuildPrompt(input.fields).
  • Label: visible field label.
• Optional props:
  • HelperText: helper text rendered below the input.
  • HelperTextOnFocus: defaults to false; show helper text only while the field is focused.
  • Adornment: one of Start, End, None; invalid or omitted values fall back to Start.
  • AdornmentIcon: MudBlazor icon identifier string for the adornment.
  • AdornmentText: plain adornment text. Do not set this together with AdornmentIcon.
  • AdornmentColor: one of the MudBlazor Color enum names such as Primary, Secondary, Warning; invalid or omitted values fall back to Default.
  • Counter: nullable integer. Omit it to hide the counter entirely. Set 0 to show only the current character count. Set 1 or higher to show current/max.
  • MaxLength: maximum number of characters allowed; defaults to 524288.
  • IsImmediate: defaults to false; updates the bound value on each input event instead of on blur/change.
  • UserPrompt: prompt context text for this field.
  • PrefillText: initial input value.
  • IsSingleLine: defaults to false; render as a one-line input instead of a textarea.
  • ReadOnly: defaults to false; disables editing.
  • Class, Style: forwarded to the rendered component for layout/styling.

Example Textarea component

{
  ["Type"] = "TEXT_AREA",
  ["Props"] = {
    ["Name"] = "Budget",
    ["Label"] = "Budget",
    ["HelperText"] = "Enter the expected amount.",
    ["Adornment"] = "Start",
    ["AdornmentIcon"] = "Icons.Material.Filled.AttachMoney",
    ["AdornmentColor"] = "Success",
    ["Counter"] = 0,
    ["MaxLength"] = 100,
    ["IsImmediate"] = true,
    ["UserPrompt"] = "Use this budget information in your answer.",
    ["PrefillText"] = "",
    ["IsSingleLine"] = true
  }
}

---

DROPDOWN reference

• Use Type = "DROPDOWN" to render a MudBlazor select field.
• Required props:
  • Name: unique state key used in prompt assembly, button actions, and BuildPrompt(input.fields).
  • Label: visible field label.
  • Default: dropdown item table with the shape { ["Value"] = "<internal value>", ["Display"] = "<visible label>" }.
  • Items: array of dropdown item tables with the same shape as Default.
• Optional props:
  • UserPrompt: prompt context text for this field.
  • ValueType: one of string, int, double, bool; currently the dropdown values exposed to prompt building and button actions are handled as the configured item Values, with typical usage being string.
  • IsMultiselect: defaults to false; when true, the component allows selecting multiple items.
  • HasSelectAll: defaults to false; enables MudBlazor's select-all behavior for multiselect dropdowns.
  • SelectAllText: custom label for the select-all action in multiselect mode.
  • HelperText: helper text rendered below the dropdown.
  • OpenIcon: MudBlazor icon identifier used while the dropdown is closed.
  • CloseIcon: MudBlazor icon identifier used while the dropdown is open.
  • IconColor: one of the MudBlazor Color enum names such as Primary, Secondary, Warning; invalid or omitted values fall back to Default.
  • IconPositon: one of Start or End; controls where the icon adornment is rendered.
  • Variant: one of the MudBlazor Variant enum names such as Text, Filled, Outlined; invalid or omitted values fall back to Outlined.
  • Class, Style: forwarded to the rendered component for layout/styling.
• Dropdown item shape:
  • Value: the internal raw value stored in component state and passed to prompt building.
  • Display: the visible label shown to the user in the menu and selection text.
• Behavior notes:
  • For single-select dropdowns, input.fields.<Name> is a single raw value such as germany.
  • For multiselect dropdowns, input.fields.<Name> is an array-like Lua table of raw values.
  • The UI shows the Display text, while prompt assembly and BuildPrompt(input) receive the raw Value.
  • Default should usually also exist in Items. If it is missing there, the runtime currently still renders it as an available option.

Example Dropdown component

{
  ["Type"] = "DROPDOWN",
  ["Props"] = {
    ["Name"] = "targetCountries",
    ["Label"] = "Target countries",
    ["UserPrompt"] = "Use the selected countries in your answer.",
    ["ValueType"] = "string",
    ["IsMultiselect"] = true,
    ["HasSelectAll"] = true,
    ["SelectAllText"] = "Select all countries",
    ["HelperText"] = "Pick one or more countries.",
    ["OpenIcon"] = "Icons.Material.Filled.ArrowDropDown",
    ["CloseIcon"] = "Icons.Material.Filled.ArrowDropUp",
    ["IconColor"] = "Secondary",
    ["IconPositon"] = "End",
    ["Variant"] = "Filled",
    ["Default"] = { ["Value"] = "germany", ["Display"] = "Germany" },
    ["Items"] = {
      { ["Value"] = "germany", ["Display"] = "Germany" },
      { ["Value"] = "austria", ["Display"] = "Austria" },
      { ["Value"] = "france", ["Display"] = "France" }
    },
    ["Class"] = "mb-3",
    ["Style"] = "min-width: 16rem;"
  }
}

---

BUTTON reference

• Use Type = "BUTTON" to render a clickable action button.
• Required props:
  • Name: unique identifier used to track execution state and logging.
  • Text: visible button label.
  • Action: Lua function called on button click.
• Optional props:
  • Variant: one of the MudBlazor Variant enum names such as Filled, Outlined, Text; omitted values fall back to Filled.
  • Color: one of the MudBlazor Color enum names such as Default, Primary, Secondary, Info; omitted values fall back to Default.
  • IsFullWidth: defaults to false; when true, the button expands to the available width.
  • Size: one of the MudBlazor Size enum names such as Small, Medium, Large; omitted values fall back to Medium.
  • StartIcon: MudBlazor icon identifier string rendered before the button text.
  • EndIcon: MudBlazor icon identifier string rendered after the button text.
  • IconColor: one of the MudBlazor Color enum names; omitted values fall back to Inherit.
  • IconSize: one of the MudBlazor Size enum names; omitted values fall back to Medium.
  • Class, Style: forwarded to the rendered component for layout/styling.

Action(input) interface

• The function receives the same input structure as ASSISTANT.BuildPrompt(input).
• Return nil for no state update.
• To update component state, return a table with a fields table.
• fields keys must reference existing component Name values.
• Supported write targets:
  • TEXT_AREA, single-select DROPDOWN, WEB_CONTENT_READER, FILE_CONTENT_READER, COLOR_PICKER: string values
  • multiselect DROPDOWN: array-like Lua table of strings
  • SWITCH: boolean values
• Unknown field names and wrong value types are ignored and logged.

Example Button component

{
  ["Type"] = "BUTTON",
  ["Props"] = {
    ["Name"] = "buildEmailOutput",
    ["Text"] = "Build output",
    ["Variant"] = "Filled",
    ["Color"] = "Primary",
    ["IsFullWidth"] = false,
    ["Size"] = "Medium",
    ["StartIcon"] = "Icons.Material.Filled.AutoFixHigh",
    ["EndIcon"] = "Icons.Material.Filled.ArrowForward",
    ["IconColor"] = "Inherit",
    ["IconSize"] = "Medium",
    ["Action"] = function(input)
      local email = input.fields.emailContent or ""
      local translate = input.fields.translateEmail or false
      local output = email

      if translate then
        output = output .. "\n\nTranslate this email:"
      end

      return {
        fields = {
          outputTextField = output
        }
      }
    end,
    ["Class"] = "mb-3",
    ["Style"] = "min-width: 12rem;"
  }
}

---

BUTTON_GROUP reference

• Use Type = "BUTTON_GROUP" to render multiple BUTTON children as a single MudBlazor button group.
• Required structure:
  • Children: array of BUTTON component tables. Other child component types are ignored.
• Optional props:
  • Variant: one of the MudBlazor Variant enum names such as Filled, Outlined, Text; omitted values fall back to Filled.
  • Color: one of the MudBlazor Color enum names such as Default, Primary, Secondary, Info; omitted values fall back to Default.
  • Size: one of the MudBlazor Size enum names such as Small, Medium, Large; omitted values fall back to Medium.
  • OverrideStyles: defaults to false; enables MudBlazor button-group style overrides.
  • Vertical: defaults to false; when true, buttons are rendered vertically instead of horizontally.
  • DropShadow: defaults to true; controls the group shadow.
  • Class, Style: forwarded to the rendered MudButtonGroup for layout/styling.
• Child buttons use the existing BUTTON props and behavior, including Lua Action(input).

Example Button-Group component

{
  ["Type"] = "BUTTON_GROUP",
  ["Props"] = {
    ["Variant"] = "Filled",
    ["Color"] = "Primary",
    ["Size"] = "Medium",
    ["OverrideStyles"] = false,
    ["Vertical"] = false,
    ["DropShadow"] = true
  },
  ["Children"] = {
    {
      ["Type"] = "BUTTON",
      ["Props"] = {
        ["Name"] = "buildEmailOutput",
        ["Text"] = "Build output",
        ["Action"] = function(input)
          return {
            fields = {
              outputBuffer = input.fields.emailContent or ""
            }
          }
        end,
        ["StartIcon"] = "Icons.Material.Filled.Build"
      }
    },
    {
      ["Type"] = "BUTTON",
      ["Props"] = {
        ["Name"] = "logColor",
        ["Text"] = "Log color",
        ["Action"] = function(input)
          LogError("ColorPicker value: " .. tostring(input.fields.colorPicker or ""))
          return nil
        end,
        ["EndIcon"] = "Icons.Material.Filled.BugReport"
      }
    }
  }
}

---

SWITCH reference

• Use Type = "SWITCH" to render a boolean toggle.
• Required props:
  • Name: unique state key used in prompt assembly and BuildPrompt(input.fields).
  • Label: visible label for the switch field.
  • Value: initial boolean state (true or false).
• Optional props:
  • Disabled: defaults to false; disables user interaction while still allowing the value to be included in prompt assembly.
  • UserPrompt: prompt context text for this field.
  • LabelOn: text shown when the switch value is true.
  • LabelOff: text shown when the switch value is false.
  • LabelPlacement: one of Bottom, End, Left, Right, Start, Top; omitted values follow the renderer default.
  • Icon: MudBlazor icon identifier string displayed inside the switch thumb.
  • IconColor: one of the MudBlazor Color enum names such as Primary, Secondary, Warning; omitted values default to Inherit.
  • CheckedColor: color used when the switch state is true; omitted values default to Inherit.
  • UncheckedColor: color used when the switch state is false; omitted values default to Inherit.
  • Class, Style: forwarded to the rendered component for layout/styling.

Example Switch component

{
  ["Type"] = "SWITCH",
  ["Props"] = {
    ["Name"] = "IncludeSummary",
    ["Label"] = "Include summary",
    ["Value"] = true,
    ["Disabled"] = false,
    ["UserPrompt"] = "Decide whether the final answer should include a short summary.",
    ["LabelOn"] = "Summary enabled",
    ["LabelOff"] = "Summary disabled",
    ["LabelPlacement"] = "End",
    ["Icon"] = "Icons.Material.Filled.Summarize",
    ["IconColor"] = "Primary",
    ["CheckedColor"] = "Success",
    ["UncheckedColor"] = "Default",
    ["Class"] = "mb-6",
  }
}

---

COLOR_PICKER reference

• Use Type = "COLOR_PICKER" to render a MudBlazor color picker.
• Required props:
  • Name: unique state key used in prompt assembly and BuildPrompt(input.fields).
  • Label: visible field label.
• Optional props:
  • Placeholder: default color hex string (e.g. #FF10FF) or initial hint text.
  • ShowAlpha: defaults to true; enables alpha channel editing.
  • ShowToolbar: defaults to true; shows picker/grid/palette toolbar.
  • ShowModeSwitch: defaults to true; allows switching between HEX/RGB(A)/HSL modes.
  • PickerVariant: one of DIALOG, INLINE, STATIC; invalid or omitted values fall back to STATIC.
  • UserPrompt: prompt context text for the selected color.
  • Class, Style: forwarded to the rendered component for layout/styling.

Example Colorpicker component

{
  ["Type"] = "COLOR_PICKER",
  ["Props"] = {
    ["Name"] = "accentColor",
    ["Label"] = "Accent color",
    ["Placeholder"] = "#FFAA00",
    ["ShowAlpha"] = false,
    ["ShowToolbar"] = true,
    ["ShowModeSwitch"] = true,
    ["PickerVariant"] = "STATIC",
    ["UserPrompt"] = "Use this as the accent color for the generated design."
  }
}

Prompt Assembly - UserPrompt Property

Each component exposes a UserPrompt string. When the assistant runs, AssistantDynamic recursively iterates over the component tree and, for each component that has a prompt, emits:

context:
<UserPrompt>
---
user prompt:
<value extracted from the component>

For switches the “value” is the boolean true/false; for readers it is the fetched/selected content; for color pickers it is the selected color text (for example #FFAA00 or rgba(...), depending on the picker mode). Always provide a meaningful UserPrompt so the final concatenated prompt remains coherent from the LLM’s perspective.

Advanced Prompt Assembly - BuildPrompt()

If you want full control over prompt composition, define ASSISTANT.BuildPrompt as a Lua function. When present, AI Studio calls it and uses its return value as the final user prompt. The default prompt assembly is skipped.

---

Interface

• ASSISTANT.BuildPrompt(LuaTable input) => string must return a string, the complete User Prompt.
• If the function is missing, returns nil, or returns a non-string, AI Studio falls back to the default prompt assembly.
• Errors in the function are caught and logged, then fall back to the default prompt assembly.

---

input table shape

The function receives a single input Lua table with:

• input.fields: values keyed by component Name
  • Text area, single-select dropdown, and readers are strings
  • Multiselect dropdown is an array-like Lua table of strings
  • Switch is a boolean
  • Color picker is the selected color as a string
• input.meta: per-component metadata keyed by component Name
  • Type (string, e.g. TEXT_AREA, DROPDOWN, SWITCH, COLOR_PICKER)
  • Label (string, when provided)
  • UserPrompt (string, when provided)
• input.profile: selected profile data
  • Name, NeedToKnow, Actions, Num
  • When no profile is selected, values match the built-in "Use no profile" entry

input = {
  fields = {
    ["<Name>"] = "<string|boolean>",
    ...
  },
  meta = {
    ["<Name>"] = {
      Type = "<TEXT_AREA|DROPDOWN|SWITCH|WEB_CONTENT_READER|FILE_CONTENT_READER|COLOR_PICKER>",
      Label = "<string?>",
      UserPrompt = "<string?>"
    },
    ...
  },
  profile = {
    Name = "<string>",
    NeedToKnow = "<string>",
    Actions = "<string>",
    Num = <number>
  }
}

-- <Name> is the value you set in the components name property

---

Using meta inside BuildPrompt

input.meta is useful when you want to dynamically build the prompt based on component type or reuse existing UI text (labels/user prompts).

Example: iterate all fields with labels and include their values

ASSISTANT.BuildPrompt = function(input)
  local parts = {}
  for name, value in pairs(input.fields) do
    local meta = input.meta[name]
    if meta and meta.Label and value ~= "" then
      table.insert(parts, meta.Label .. ": " .. tostring(value))
    end
  end
  return table.concat(parts, "\n")
end

Example: handle types differently

ASSISTANT.BuildPrompt = function(input)
  local parts = {}
  for name, meta in pairs(input.meta) do
    local value = input.fields[name]
    if meta.Type == "SWITCH" then
      table.insert(parts, name .. ": " .. tostring(value))
    elseif meta.Type == "COLOR_PICKER" and value and value ~= "" then
      table.insert(parts, name .. ": " .. value)
    elseif value and value ~= "" then
      table.insert(parts, name .. ": " .. value)
    end
  end
  return table.concat(parts, "\n")
end

---

Using profile inside BuildPrompt

Profiles are optional user context (e.g., "NeedToKnow" and "Actions"). You can inject this directly into the user prompt if you want the LLM to always see it.

Example: Add user profile context to the prompt

ASSISTANT.BuildPrompt = function(input)
  local parts = {}
  if input.profile and input.profile.NeedToKnow ~= "" then
    table.insert(parts, "User context:")
    table.insert(parts, input.profile.NeedToKnow)
    table.insert(parts, "")
  end
  table.insert(parts, input.fields.Main or "")
  return table.concat(parts, "\n")
end

Advanced Layout Options

LAYOUT_GRID reference

A 12-column grid system for organizing content with responsive breakpoints for different screen sizes.

+------------------------------------------------------------+
|                           12                               |
+------------------------------------------------------------+

+----------------------------+  +----------------------------+
|            6               |  |            6               |
+----------------------------+  +----------------------------+

+------------+  +------------+  +-----------+  +-------------+
|      3     |  |      3     |  |     3     |  |      3      |
+------------+  +------------+  +-----------+  +-------------+

• Use Type = "LAYOUT_GRID" to render a MudBlazor grid container.
• Required props:
  • Name: unique identifier for the layout node.
• Required structure:
  • Children: array of LAYOUT_ITEM component tables. Other child component types are ignored.
• Optional props:
  • Justify: one of the MudBlazor Justify enum names such as FlexStart, Center, SpaceBetween; omitted values fall back to FlexStart.
  • Spacing: integer spacing between grid items; omitted values fall back to 6.
  • Class, Style: forwarded to the rendered MudGrid for layout/styling.

Example: How to define a flexible grid

{
  ["Type"] = "LAYOUT_GRID",
  ["Props"] = {
    ["Name"] = "mainGrid",
    ["Justify"] = "FlexStart",
    ["Spacing"] = 2
  },
  ["Children"] = {
    {
      ["Type"] = "LAYOUT_ITEM",
      ["Props"] = {
        ["Name"] = "contentColumn",
        ["Xs"] = 12,
        ["Lg"] = 8
      },
      ["Children"] = {
        ["Type"] = "<TEXT_AREA|BUTTON|BUTTON_GROUP|SWITCH|PROVIDER_SELECTION|...>",
        ["Props"] = {...},
      },
    },
    {
      ["Type"] = "LAYOUT_ITEM",
      ["Props"] = {
        ["Name"] = "contentColumn2",
        ["Xs"] = 12,
        ["Lg"] = 8
      },
      ["Children"] = {
        ["Type"] = "<TEXT_AREA|BUTTON|BUTTON_GROUP|SWITCH|PROVIDER_SELECTION|...>",
        ["Props"] = {...},
      },
    },
    ...
  }
}

For a visual example and a full explanation look here

---

LAYOUT_ITEM reference

LAYOUT_ITEM is used to wrap children components to use them into a grid. The Breakpoints define how many columns the wrapped components take up in a 12-column grid. Read more about breakpoint here.

• Use Type = "LAYOUT_ITEM" to render a MudBlazor grid item.
• Required props:
  • Name: unique identifier for the layout node.
• Intended parent:
  • Use this component inside LAYOUT_GRID.
• Optional props:
  • Xs, Sm, Md, Lg, Xl, Xxl: integer breakpoint widths. Omit a breakpoint to leave it unset.
  • Class, Style: forwarded to the rendered MudItem for layout/styling.
• Children may contain any other assistant components you want to place inside the item.

Example: How to wrap a child component and define its breakpoints

{
  ["Type"] = "LAYOUT_ITEM",
  ["Props"] = {
    ["Name"] = "contentColumn",
    ["Xs"] = 12,
    ["Lg"] = 8
  },
  ["Children"] = {
    {
      ["Type"] = "<TEXT_AREA|BUTTON|BUTTON_GROUP|SWITCH|PROVIDER_SELECTION|...>",
      ["Props"] = {...},
    }
  }
}

For a full explanation look here

---

LAYOUT_PAPER reference

• Use Type = "LAYOUT_PAPER" to render a MudBlazor paper container.
• Required props:
  • Name: unique identifier for the layout node.
• Optional props:
  • Elevation: integer elevation; omitted values fall back to 1.
  • Height, MaxHeight, MinHeight, Width, MaxWidth, MinWidth: CSS size values such as 100%, 24rem, 50vh.
  • IsOutlined: defaults to false; toggles outlined mode.
  • IsSquare: defaults to false; removes rounded corners.
  • Class, Style: forwarded to the rendered MudPaper for layout/styling.
• Children may contain any other assistant components you want to wrap.

Example: How to define a MudPaper wrapping child components

{
  ["Type"] = "LAYOUT_PAPER",
  ["Props"] = {
    ["Name"] = "contentPaper",
    ["Elevation"] = 2,
    ["Width"] = "100%",
    ["IsOutlined"] = true
  },
  ["Children"] = {
    {
      ["Type"] = "<TEXT_AREA|BUTTON|BUTTON_GROUP|SWITCH|PROVIDER_SELECTION|...>",
      ["Props"] = {...},
    },
    ...
  }
}

For a visual example and a full explanation look here

---

LAYOUT_STACK reference

• Use Type = "LAYOUT_STACK" to render a MudBlazor stack layout.
• Required props:
  • Name: unique identifier for the layout node.
• Optional props:
  • IsRow: defaults to false; renders items horizontally.
  • IsReverse: defaults to false; reverses the visual order.
  • Breakpoint: one of the MudBlazor Breakpoint enum names such as Sm, Md, Lg; omitted values fall back to None.
  • Align: one of the MudBlazor AlignItems enum names such as Start, Center, Stretch; omitted values fall back to Stretch.
  • Justify: one of the MudBlazor Justify enum names such as FlexStart, Center, SpaceBetween; omitted values fall back to FlexStart.
  • Stretch: one of the MudBlazor StretchItems enum names such as None, Start, End, Stretch; omitted values fall back to None.
  • Wrap: one of the MudBlazor Wrap enum names such as Wrap, NoWrap, WrapReverse; omitted values fall back to Wrap.
  • Spacing: integer spacing between child components; omitted values fall back to 3.
  • Class, Style: forwarded to the rendered MudStack for layout/styling.
• Children may contain any other assistant components you want to arrange.

Example: Define a stack of children components

{
  ["Type"] = "LAYOUT_STACK",
  ["Props"] = {
    ["Name"] = "toolbarRow",
    ["IsRow"] = true,
    ["Align"] = "Center",
    ["Justify"] = "SpaceBetween",
    ["Spacing"] = 2
  },
  ["Children"] = {
    {
      ["Type"] = "<TEXT_AREA|BUTTON|BUTTON_GROUP|SWITCH|PROVIDER_SELECTION|...>",
      ["Props"] = {...},
    },
    ...
  }
}

For a visual example and a full explanation look here

Useful Lua Functions

Included lua libraries

• Basic Functions Library
• Coroutine Manipulation Library
• String Manipulation Library
• Table Manipulation Library
• Mathematical Functions Library
• Bitwise Operations Library

---

Logging helpers

The assistant runtime exposes basic logging helpers to Lua. Use them to debug custom prompt building.

• LogDebug(message)
• LogInfo(message)
• LogWarn(message)
• LogError(message)

Example: Use Logging in lua functions

ASSISTANT.BuildPrompt = function(input)
  LogInfo("BuildPrompt called")
  return input.fields.Text or ""
end

---

Date/time helpers (assistant plugins only)

Use these when you need timestamps inside Lua.

• DateTime(format) returns a table with date/time parts plus a formatted string.
  • format is optional; default is yyyy-MM-dd HH:mm:ss (ISO 8601-like).
  • formatted contains the date in your desired format (e.g. dd.MM.yyyy HH:mm) or the default.
  • Members: year, month, day, hour, minute, second, millisecond, formatted.
• Timestamp() returns a UTC timestamp in ISO-8601 format (O / round-trip), e.g. 2026-03-02T21:15:30.1234567Z.

Example: Use the datetime functions in lua

local dt = DateTime("yyyy-MM-dd HH:mm:ss")
LogInfo(dt.formatted)
LogInfo(Timestamp())
LogInfo(dt.day .. "." .. dt.month .. "." .. dt.year)

General Tips

1. Give every component a unique Name— it’s used to track state and treated like an Id.
2. Keep in mind that components and their properties are case-sensitive (e.g. if you write ["Type"] = "heading" instead of ["Type"] = "HEADING" the component will not be registered). Always copy-paste the component from the plugin.lua manifest to avoid this.
3. When you expect default content (e.g., a textarea with instructions), keep UserPrompt but also set PrefillText so the user starts with a hint.
4. If you need extra explanatory text (before or after the interactive controls), use TEXT or HEADING components.
5. Keep Preselect/PreselectContentCleanerAgent flags in WEB_CONTENT_READER to simplify the initial UI for the user.

Useful Resources

• plugin.lua - Lua Manifest
• AI Studio Repository
• Lua 5.2 Reference Manual
• MudBlazor Documentation