kacperchlebowicz/cavalry-mcp

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MCP server that connects Claude to Cavalry animation software. Create layers, set attributes, animate with keyframes, render frames, and more — all through natural language.

개요

MCP server that connects Claude to Cavalry animation software. Create layers, set attributes, animate with keyframes, render frames, and more — all through natural language. The MCP server sends JavaScript to Cavalry via the Stallion bridge (an HTTP server running inside Cavalry on 127.0.0.1:8080). - Cavalry (with Stallion script enabled: ) - Node.js >= 18 Create a bouncing text that says "Hello World" Claude will: 1. Create a textShape layer 2. Set the text content, font size, and color 3. Add position keyframes for the bounce 4. Apply BounceOut easing basicShape, textShape, null, colorPlane, group, subMesh, linearGradient, duplicator, connectShape, noiseDeformer, stagger, trail, javaScriptUtility, javaScriptShape, imageAsset, videoAsset, soundAsset - position.x, position.y — Layer position - rotation — Rotation in degrees - scale.x, scale.y — Scale - opacity — Layer opacity (0–100) - fontSize — Text layer font size - fill.color — Fill color (hex string) - stroke.color, stroke.

README

cavalry-mcp

MCP server that connects Claude to Cavalry animation software. Create layers, set attributes, animate with keyframes, render frames, and more — all through natural language.

How it works

Claude  cavalry-mcp  Stallion  Cavalry

The MCP server sends JavaScript to Cavalry via the Stallion bridge (an HTTP server running inside Cavalry on 127.0.0.1:8080).

Prerequisites

Cavalry (with Stallion script enabled: Scripts > Stallion)
Node.js >= 18

Setup

npm install
npm run build

Configure in Claude Desktop

Add to your claude_desktop_config.json:

{
  "mcpServers": {
    "cavalry": {
      "command": "node",
      "args": ["/absolute/path/to/cavalry-mcp/dist/index.js"]
    }
  }
}

Available tools

Tool	Description
`cavalry_ping`	Check if Cavalry + Stallion are reachable
`cavalry_run_script`	Execute arbitrary JavaScript in Cavalry
`cavalry_create_layer`	Create a layer (textShape, basicShape, null, etc.)
`cavalry_set_attribute`	Set attributes on a layer
`cavalry_get_attribute`	Read an attribute value
`cavalry_connect`	Connect attributes between layers
`cavalry_keyframe`	Set a keyframe at a specific frame
`cavalry_magic_easing`	Apply easing to keyframed attributes
`cavalry_get_scene_layers`	List all layers in the scene
`cavalry_get_selected_layers`	Get currently selected layers
`cavalry_select_layers`	Select layers by ID
`cavalry_delete_layers`	Delete layers by ID
`cavalry_get_composition_info`	Get resolution, frame range, FPS
`cavalry_set_current_frame`	Move the playhead
`cavalry_render_png`	Render current frame as PNG
`cavalry_set_generator`	Set a generator on a layer (ellipse, rectangle, etc.)
`cavalry_duplicate_layer`	Duplicate a layer
`cavalry_get_bounding_box`	Get a layer’s bounding box
`cavalry_save_scene`	Save the scene
`cavalry_open_scene`	Open a .cv scene file
`cavalry_add_dynamic_attribute`	Add a dynamic attribute to a layer

Example conversation

You: Create a bouncing text that says “Hello World”

Claude will:

Create a textShape layer

Set the text content, font size, and color

Add position keyframes for the bounce

Apply BounceOut easing

Common layer types

basicShape, textShape, null, colorPlane, group, subMesh, linearGradient, duplicator, connectShape, noiseDeformer, stagger, trail, javaScriptUtility, javaScriptShape, imageAsset, videoAsset, soundAsset

Common attribute paths

position.x, position.y — Layer position
rotation — Rotation in degrees
scale.x, scale.y — Scale
opacity — Layer opacity (0–100)
fontSize — Text layer font size
fill.color — Fill color (hex string)
stroke.color, stroke.width — Stroke properties

License

MIT

View this README on GitHub

설치

This server does not publish a one-line install command.

Open the repository installation guide

설정

{
  "mcpServers": {
    "cavalry": {
      "command": "node",
      "args": ["/absolute/path/to/cavalry-mcp/dist/index.js"]
    }
  }
}