canvas

Included with Lifetime

$97 forever

**The primary skill for terminal TUI components.** Covers spawning, controlling, and interacting with terminal canvases. Use when displaying calendars, documents, or flight bookings.

General

What this skill does


# Canvas TUI Toolkit

**Start here when using terminal canvases.** This skill covers the overall workflow, canvas types, and IPC communication.

## Overview

Canvas provides interactive terminal displays (TUIs) that Claude can spawn and control. Each canvas type supports multiple scenarios for different interaction modes.

## Available Canvas Types

| Canvas     | Purpose                               | Scenarios                          |
| ---------- | ------------------------------------- | ---------------------------------- |
| `calendar` | Display calendars, pick meeting times | `display`, `meeting-picker`        |
| `document` | View/edit markdown documents          | `display`, `edit`, `email-preview` |
| `flight`   | Flight comparison and seat selection  | `booking`                          |

## Quick Start

```bash
cd ${CLAUDE_PLUGIN_ROOT}

# Run canvas in current terminal
bun run src/cli.ts show calendar

# Spawn canvas in new tmux split
bun run src/cli.ts spawn calendar --scenario meeting-picker --config '{...}'
```

## Spawning Canvases

**Always use `spawn` for interactive scenarios** - this opens the canvas in a tmux split pane while keeping the conversation terminal available.

```bash
bun run src/cli.ts spawn [kind] --scenario [name] --config '[json]'
```

**Parameters:**

- `kind`: Canvas type (calendar, document, flight)
- `--scenario`: Interaction mode (e.g., display, meeting-picker, edit)
- `--config`: JSON configuration for the canvas
- `--id`: Optional canvas instance ID for IPC

## IPC Communication

Interactive canvases communicate via Unix domain sockets.

**Canvas → Controller:**

```typescript
{ type: "ready", scenario }        // Canvas is ready
{ type: "selected", data }         // User made a selection
{ type: "cancelled", reason? }     // User cancelled
{ type: "error", message }         // Error occurred
```

**Controller → Canvas:**

```typescript
{
  type: ("update", config);
} // Update canvas configuration
{
  type: "close";
} // Request canvas to close
{
  type: "ping";
} // Health check
```

## High-Level API

For programmatic use, import the API module:

```typescript
import { pickMeetingTime, editDocument, bookFlight } from "${CLAUDE_PLUGIN_ROOT}/src/api";

// Spawn meeting picker and wait for selection
const result = await pickMeetingTime({
  calendars: [...],
  slotGranularity: 30,
});

if (result.success && result.data) {
  console.log(`Selected: ${result.data.startTime}`);
}
```

## Requirements

- **iTerm2 or tmux**: Canvas spawning requires one of:
  - iTerm2 (recommended for macOS) - just run Claude Code inside iTerm2
  - tmux session - for cross-platform or remote use
- **Terminal with mouse support**: For click-based interactions
- **Bun**: Runtime for executing canvas commands

## Terminal Detection

Check your environment with:

```bash
bun run src/cli.ts env
```

The canvas auto-detects iTerm2 or tmux and uses the appropriate split method.

## Skills Reference

| Skill      | Purpose                                     |
| ---------- | ------------------------------------------- |
| `calendar` | Calendar display and meeting picker details |
| `document` | Document rendering and text selection       |
| `flight`   | Flight comparison and seat map details      |

Files: 1

Size: 3.4 KB

Complexity: 7/100

Category: General

Source: https://github.com/az9713/claude-canvas/tree/main/canvas/skills/canvas

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