Built-In Capability Matrix

The generator registers the built-in modules declared by packages/generator/src/modules/index.ts in the MODULES manifest. A directory under modules/ is not a published capability unless it is registered there.

This matrix records whether each logical capability has an official access surface:

• SDK means a typed Connection.modules.* facade is available. Generic Connection.invoke(...) access does not count.
• Plugin Host means the capability is part of the typed plugin.modules.* contract exported for plugin authors.
• WS means the capability is registered as a WebSocket Protocol method.
• HTTP API means the capability has a registered @api route.
• MCP is unavailable in the current version. No built-in capability is exposed through MCP yet.

A check means the capability has an entry point on that surface. Parameters and result shapes can differ between surfaces; see SDK Modules, Protocol, and API Routes for the surface-specific contract.

Request Capabilities

Capability	Summary	SDK	Plugin Host	WS	HTTP API	MCP
action.autoCutout	Select the main subject of the current layer.	✅	✅	✅	✅	❌
action.removeBackground	Remove the background from the current layer.	✅	✅	✅	✅	❌
document.getCurrentDocument	Read metadata for the active document.	✅	✅	✅	✅	❌
document.exportDocument	Export the active document to a file.	✅	✅	✅	✅	❌
document.saveDocument	Save the active document, optionally to a new path.	✅	✅	✅	✅	❌
layer.getLayerInfo	Read layer metadata with optional children and settings.	✅	✅	✅	✅	❌
layer.getLayerInfoByID	Read layer metadata by Photoshop layer ID.	✅	✅	✅	✅	❌
layer.getLayerInfoByIndex	Read layer metadata by document layer index.	✅	✅	✅	✅	❌
layer.getLayerInfoBySelectionIndex	Read layer metadata by its index in the current selection.	✅	✅	✅	❌	❌
layer.getCurrentPreview	Render a PNG preview for the current layer.	✅	✅	✅	✅	❌
layer.importImage	Import an image as a layer with optional placement settings.	✅	✅	✅	✅	❌
image.exportLayer	Export a layer or layer range as PNG image data.	✅	✅	✅	✅	❌
image.exportLayerWithSelectedPath	Export a layer using the current selected path.	✅	✅	✅	✅	❌
image.getPreview	Render a PNG preview for a specified layer.	✅	✅	✅	✅	❌
image.exportDocument	Export a document as PNG image data.	✅	✅	✅	✅	❌
selection.watch	Enable production of selection change events.	✅	✅	✅	❌	❌
selection.getArea	Read the bounds of the current selection.	✅	✅	✅	✅	❌
selection.getPath	Read the current selection path as SVG geometry.	✅	✅	✅	✅	❌

Event Capabilities

Module events use the typed SDK and Plugin Host event facades. Remote SDK subscriptions travel over WebSocket; events do not have HTTP or MCP entry points.

Event	Summary	SDK	Plugin Host	WS	HTTP API	MCP
layer:previewChange	Publishes the refreshed current-layer preview.	✅	✅	✅	❌	❌
layer:selectionChange	Publishes metadata for the selected Photoshop layers.	✅	✅	✅	❌	❌
selection:changed	Publishes the current selection bounds after changes.	✅	✅	✅	❌	❌