MCP server for Compositor, the open-source Photoshop alternative for Mac: let Claude read and edit .comp projects
An MCP server that lets Claude and other AI agents read and edit Compositor projects, the open-source Photoshop alternative for Mac.
It works on the documented .comp package format (a manifest.json plus one PNG per layer), so it needs no changes to Compositor itself. Edit a project with an agent, then open it in Compositor. Or the other way round: save in Compositor and let the agent inspect, retouch or render it.
Tool Purpose --- --- inspectproject Canvas size, resolution and every layer with folder depth, opacity, blend mode, transform, mask and clipping info listlayers Compact top-to-bottom view like the Layers panel renderpreview Flattened PNG preview returned as an image so the model can see the composition exportflattened Full-resolution PNG or JPEG export exportlayer Copy a layer's source pixels or mask to a file createproject New document, optionally with a solid background layer addimagelayer Import PNG, JPEG, HEIC, TIFF, WebP… as a layer, with fit/fill/stretch placement, opacity, blend mode and folder addfolder Create a layer folder setlayer Rename, show/hide, opacity, blend mode, position, size, rotation, flips, sampling, mask on/off movelayer Reorder layers or move them between folders removelayer Delete a layer or a whole folder replacelayerimage Swap a layer's pixels (round-trip through another tool or a generated image) setlayermask Attach a grayscale mask, invert it, or clear it resizecanvas Change the document size with an anchor, without resampling openincompositor Open the project in the Compositor app
From the project README.
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