Check the configured GIMP connection and return basic session status.

Return supported high-level operations and known v0.1 limitations.

List open images using stable GIMP image IDs.

Return the image associated with GIMP's default display, if available.

Return dimensions, name, file, base type, and dirty state for an image.

Open an existing local image file in GIMP.

Create a new RGB, GRAY, or INDEXED image.

Save an image as XCF; existing files require overwrite=true.

Export an image using the format selected by the explicit file extension.

Close an image; dirty images require an explicit discard=true.

List root layers in top-to-bottom order.

Return stable properties for a layer/drawable.

Create a transparent RGBA layer at the top of an image.

Duplicate a layer and insert the copy at the top of the image.

Rename a layer without changing its pixels.

Delete a layer from an image.

Set whether a layer is visible.

Set layer opacity from 0 to 100.

Set a GIMP layer mode such as LAYER-MODE-NORMAL or LAYER-MODE-MULTIPLY.

Move a layer to a top-level or group position.

Merge a layer down using a GIMP merge type.

Scale the image and its layers to exact dimensions.

Resize the canvas without scaling layer pixels.

Crop an image to the supplied rectangle.

Rotate an image using ROTATE-90, ROTATE-180, or ROTATE-270.

Flip an image HORIZONTAL or VERTICAL.

Select the entire image.

Clear the image selection.

Invert the current selection.

Replace the selection with a rectangle.

Replace the selection with an ellipse.

Replace the selection with a layer's alpha.

Apply the basic brightness/contrast adjustment to a drawable.

Apply the basic hue, saturation, and lightness adjustment.

Desaturate a drawable using a GIMP desaturation mode.

Undo the latest action in an image.

Redo the latest undone action in an image.

Search live GIMP PDB procedure names by literal text.

Describe a live GIMP PDB procedure using runtime metadata.

Invoke a live PDB procedure using structured positional or keyword values.

Values may be JSON scalars, arrays, or {"scheme_symbol": "ENUM-VALUE"} objects. Arbitrary Scheme source is intentionally not accepted.