Template

Coding agent

Beta

Desktop coding workspace with project tasks, a focused conversation, and a persistent controlled composer.

Build a coding-agent workspace

Thanks to our components, create a block that feels like a focused coding workspace.

Thinking

Composition

Rendered workspace shell

<CodingAgentBlock>
- <SidebarProvider>
  - <Sidebar>
    - navigation
    - projects and tasks
    </Sidebar>
  - <SidebarInset>
    - task header
    - children prop
      - <CodingAgentConversation>
        <ChatLayout>
        <ChatThread>
        rendered turns or empty content
        <CodingAgentEmptyState />
        composer prop
        <ChatComposer />
        </ChatThread>
        </ChatLayout>
        </CodingAgentConversation>
    </SidebarInset>
  </SidebarProvider>
</CodingAgentBlock>

Installation

First install and activate one skin. Core deliberately contains no visual token defaults.

Registry command

npx shadcn@latest add https://control-ui.dev/r/coding-agent-block.json

See registry manifest

Usage

"use client";

import { useState } from "react";

import {

CodingAgentBlock,

CodingAgentConversation,

CodingAgentEmptyState,

type CodingAgentProject,

} from "@/components/control-ui/blocks/coding-agent";

import {

ChatComposer,

ChatComposerShell,

ChatComposerSubmit,

ChatComposerTextarea,

ChatComposerToolbar,

} from "@/components/control-ui/chat-composer";

const projects: readonly CodingAgentProject[] = [

{

id: "web",

name: "web",

tasks: [

{ id: "homepage", title: "Update the homepage" },

{ id: "tests", title: "Fix browser tests" },

],

},

];

export default function CodingAgentPage() {

const [activeTaskId, setActiveTaskId] = useState<string>();

return (

<CodingAgentBlock

projects={projects}

activeTaskId={activeTaskId}

activeTaskTitle={projects[0]?.tasks.find((task) => task.id === activeTaskId)?.title}

onTaskSelect={(task) => setActiveTaskId(task.id)}

onNewTask={() => setActiveTaskId(undefined)}

>

<CodingAgentConversation

composer={

<ChatComposer onSubmit={({ clear }) => clear()}>

<ChatComposerShell>

<ChatComposerTextarea placeholder="Ask the coding agent..." />

<ChatComposerToolbar>

<span />

<ChatComposerSubmit>Send</ChatComposerSubmit>

</ChatComposerToolbar>

</ChatComposerShell>

</ChatComposer>

}

>

<CodingAgentEmptyState title="What should we build?" />

</CodingAgentConversation>

</CodingAgentBlock>

);

}

Library dependencies

ButtonbuttonPrimitive ChatLayoutchat-layoutAgent CollapsiblecollapsiblePrimitive SidebarsidebarPrimitive

Owned source

This block’s recipe and private support files. Public dependencies stay linked above.

Block recipesrc/registry/blocks/control-ui/coding-agent.tsx

src/registry/blocks/control-ui/coding-agent.tsx

"use client";

import { BotIcon, ChevronRightIcon, CircleIcon, FolderIcon, PlusIcon, SearchIcon } from "lucide-react";

import type { ComponentProps, ReactNode } from "react";

import { ChatLayout, ChatThread } from "@/components/control-ui/chat-layout";

import { cn } from "@/components/control-ui/lib/cn";

import { Button } from "@/components/control-ui/ui/button";

import { Collapsible, CollapsibleContent, CollapsibleTrigger } from "@/components/control-ui/ui/collapsible";

import {

Sidebar,

SidebarContent,

SidebarFooter,

SidebarGroup,

SidebarGroupLabel,

SidebarHeader,

SidebarInset,

SidebarMenu,

SidebarMenuButton,

SidebarMenuItem,

SidebarProvider,

SidebarRail,

type SidebarStyle,

SidebarTrigger,

useSidebar,

} from "@/components/control-ui/ui/sidebar";

export type CodingAgentNavigationItem = {

id: string;

label: string;

icon?: ReactNode;

trailing?: ReactNode;

};

export type CodingAgentTask = {

id: string;

title: string;

trailing?: ReactNode;

};

export type CodingAgentProject = {

id: string;

name: string;

icon?: ReactNode;

tasks: readonly CodingAgentTask[];

open?: boolean;

};

export type CodingAgentBlockProps = Omit<ComponentProps<"div">, "children"> & {

appName?: string;

brand?: ReactNode;

sidebarTop?: ReactNode;

navigation?: readonly CodingAgentNavigationItem[];

projects: readonly CodingAgentProject[];

activeTaskId?: string;

activeTaskTitle?: string;

onNavigationSelect?: (item: CodingAgentNavigationItem) => void;

onTaskSelect?: (task: CodingAgentTask, project: CodingAgentProject) => void;

onNewTask?: () => void;

onSearch?: () => void;

headerActions?: ReactNode;

sidebarFooter?: ReactNode;

children: ReactNode;

layout?: "viewport" | "contained";

};

export function CodingAgentBlock({

appName = "Agent",

brand,

sidebarTop,

navigation = [],

projects,

activeTaskId,

activeTaskTitle = "New task",

onNavigationSelect,

onTaskSelect,

onNewTask,

onSearch,

headerActions,

sidebarFooter,

children,

layout = "viewport",

className,

style,

...props

}: CodingAgentBlockProps) {

const contained = layout === "contained";

const providerStyle: SidebarStyle = { "--sidebar-width": "17.5rem", ...style };

return (

<SidebarProvider

      className={cn("overflow-hidden bg-background text-foreground", contained ? "relative h-full min-h-0" : "h-svh min-h-svh", className)}

style={providerStyle}

{...props}

>

<CodingAgentSidebar

appName={appName}

brand={brand}

sidebarTop={sidebarTop}

navigation={navigation}

projects={projects}

activeTaskId={activeTaskId}

contained={contained}

sidebarFooter={sidebarFooter}

onNavigationSelect={onNavigationSelect}

onTaskSelect={onTaskSelect}

onNewTask={onNewTask}

onSearch={onSearch}

/>

<SidebarInset className="h-full min-h-0 min-w-0 overflow-hidden">

<header className="flex h-12 shrink-0 items-center gap-2 border-b border-border/70 px-3">

<SidebarTrigger size="xs" className="md:hidden" />

<FolderIcon className="size-4 shrink-0 text-muted-foreground" aria-hidden="true" />

<h1 className="min-w-0 flex-1 truncate text-label font-medium">{activeTaskTitle}</h1>

{headerActions ? <div className="flex shrink-0 items-center gap-1">{headerActions}</div> : null}

</header>

<div className="min-h-0 flex-1 overflow-hidden">{children}</div>

</SidebarInset>

</SidebarProvider>

);

}

function CodingAgentSidebar({

appName,

brand,

sidebarTop,

navigation,

projects,

activeTaskId,

contained,

sidebarFooter,

onNavigationSelect,

onTaskSelect,

onNewTask,

onSearch,

}: {

appName: string;

brand?: ReactNode;

sidebarTop?: ReactNode;

navigation: readonly CodingAgentNavigationItem[];

projects: readonly CodingAgentProject[];

activeTaskId?: string;

contained: boolean;

sidebarFooter?: ReactNode;

onNavigationSelect?: (item: CodingAgentNavigationItem) => void;

onTaskSelect?: (task: CodingAgentTask, project: CodingAgentProject) => void;

onNewTask?: () => void;

onSearch?: () => void;

}) {

const { setOpenMobile } = useSidebar();

function finishMobileNavigation() {

setOpenMobile(false);

}

function startTask() {

onNewTask?.();

finishMobileNavigation();

}

return (

    <Sidebar collapsible="offcanvas" className={contained ? "absolute! inset-y-0! h-full border-r border-sidebar-border" : undefined}>

<SidebarHeader className="gap-1.5 border-b border-sidebar-border px-2 pb-2 pt-3">

{sidebarTop}

<div className="flex min-w-0 items-center gap-2 px-1 py-1">

<div className="flex min-w-0 flex-1 items-center gap-2">

{brand ?? (

              <span className="flex size-6 shrink-0 items-center justify-center rounded-md bg-foreground text-background">

<BotIcon className="size-3.5" aria-hidden="true" />

</span>

)}

<span className="truncate text-label font-semibold">{appName}</span>

</div>

<Button variant="ghost" size="sm" iconOnly aria-label="Search tasks" onClick={onSearch}>

<SearchIcon className="size-3.5" />

</Button>

</div>

<SidebarMenu>

<SidebarMenuItem>

<SidebarMenuButton size="sm" onClick={startTask}>

<PlusIcon />

<span>New task</span>

</SidebarMenuButton>

</SidebarMenuItem>

</SidebarMenu>

</SidebarHeader>

<SidebarContent>

{navigation.length > 0 ? (

<SidebarGroup className="pb-0">

<SidebarMenu>

{navigation.map((item) => (

<SidebarMenuItem key={item.id}>

<SidebarMenuButton

size="sm"

onClick={() => {

onNavigationSelect?.(item);

finishMobileNavigation();

}}

>

{item.icon}

<span>{item.label}</span>

{item.trailing ? <span className="ml-auto shrink-0">{item.trailing}</span> : null}

</SidebarMenuButton>

</SidebarMenuItem>

))}

</SidebarMenu>

</SidebarGroup>

) : null}

<SidebarGroup className="gap-1 pt-1">

<SidebarGroupLabel>Projects</SidebarGroupLabel>

<div className="grid gap-1">

{projects.map((project) => (

<Collapsible key={project.id} defaultOpen={project.open ?? true} className="min-w-0">

                <CollapsibleTrigger className="flex h-[var(--control-h-sm)] w-full items-center gap-2 rounded-[var(--radius-popup-item)] px-2 text-caption font-medium hover:bg-foreground/6">

<ChevronRightIcon className="size-3.5 shrink-0 text-muted-foreground" aria-hidden="true" />

<span className="flex shrink-0 items-center text-muted-foreground">

{project.icon ?? <FolderIcon className="size-4" aria-hidden="true" />}

</span>

<span className="truncate">{project.name}</span>

</CollapsibleTrigger>

<CollapsibleContent>

<SidebarMenu className="mt-1 pl-5">

{project.tasks.map((task) => {

const isActive = task.id === activeTaskId;

return (

<SidebarMenuItem key={task.id}>

<SidebarMenuButton

size="sm"

isActive={isActive}

aria-current={isActive ? "page" : undefined}

onClick={() => {

onTaskSelect?.(task, project);

finishMobileNavigation();

}}

>

<CircleIcon className="size-1.5 fill-current opacity-35" aria-hidden="true" />

<span>{task.title}</span>

{task.trailing ? <span className="ml-auto shrink-0">{task.trailing}</span> : null}

</SidebarMenuButton>

</SidebarMenuItem>

);

})}

</SidebarMenu>

</CollapsibleContent>

</Collapsible>

))}

</div>

</SidebarGroup>

</SidebarContent>

{sidebarFooter ? <SidebarFooter className="border-t border-sidebar-border">{sidebarFooter}</SidebarFooter> : null}

<SidebarRail />

</Sidebar>

);

}

export type CodingAgentConversationProps = Omit<ComponentProps<typeof ChatLayout>, "children"> & {

children: ReactNode;

composer: ReactNode;

};

export function CodingAgentConversation({ children, composer, className, ...props }: CodingAgentConversationProps) {

return (

<ChatLayout chrome="embedded" className={cn("h-full min-h-0 max-w-none", className)} {...props}>

<ChatThread composer={<div className="mx-auto w-full max-w-3xl px-2 sm:px-6">{composer}</div>}>

<div className="mx-auto flex w-full max-w-3xl flex-1 flex-col gap-8">{children}</div>

</ChatThread>

</ChatLayout>

);

}

export type CodingAgentSuggestion = {

id: string;

title: string;

description?: string;

icon?: ReactNode;

prompt?: string;

};

export type CodingAgentEmptyStateProps = Omit<ComponentProps<"section">, "title"> & {

title?: ReactNode;

description?: ReactNode;

icon?: ReactNode;

suggestions?: readonly CodingAgentSuggestion[];

onSuggestionSelect?: (prompt: string, suggestion: CodingAgentSuggestion) => void;

};

export function CodingAgentEmptyState({

title = "What should we build?",

description,

icon,

suggestions = [],

onSuggestionSelect,

className,

...props

}: CodingAgentEmptyStateProps) {

return (

<section className={cn("my-auto flex w-full flex-col items-center py-10 text-center", className)} {...props}>

      <div className="mb-5 flex size-11 items-center justify-center rounded-2xl border bg-card text-muted-foreground shadow-sm">

{icon ?? <BotIcon className="size-5" aria-hidden="true" />}

</div>

<h2 className="text-balance text-xl font-medium tracking-tight sm:text-2xl">{title}</h2>

{description ? <p className="mt-2 max-w-xl text-sm leading-6 text-muted-foreground">{description}</p> : null}

{suggestions.length > 0 ? (

<div className="mt-8 grid w-full grid-cols-1 gap-3 sm:grid-cols-2 lg:grid-cols-4">

{suggestions.map((suggestion) => (

<Button

key={suggestion.id}

variant="surface"

size="lg"

              className="h-auto min-h-28 w-full items-start justify-start whitespace-normal rounded-[var(--radius-panel)] px-4 py-4 text-left"

onClick={() => onSuggestionSelect?.(suggestion.prompt ?? suggestion.title, suggestion)}

>

<span className="flex min-w-0 flex-col items-start gap-3">

<span className="text-primary-text">{suggestion.icon}</span>

<span className="text-sm font-medium leading-5 text-foreground">{suggestion.title}</span>

{suggestion.description ? (

<span className="text-caption leading-5 text-muted-foreground">{suggestion.description}</span>

) : null}

</span>

</Button>

))}

</div>

) : null}

</section>

);

}