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undo tool crashes: 'Image' object has no attribute 'undo' #42
Description
Description
Calling the undo MCP tool always fails with an AttributeError instead of undoing the last operation. (Suspect redo has the same bug, untested.)
Steps to reproduce
- Start the GIMP MCP server (
Tools > MCP > Start MCP Server) - Create/open any image and perform any edit, e.g.
fill_layer(color="#4169E1") - Call the
undotool
Expected
The last operation is undone.
Actual
Error executing tool undo: undo failed: 'Image' object has no attribute 'undo'
Likely cause
GIMP 3.2's PyGObject Gimp.Image object has no .undo() method. This should likely go through the PDB instead, e.g. the gimp-image-undo procedure (and gimp-image-redo for the redo tool):
pdb = Gimp.get_pdb()
proc = pdb.lookup_procedure("gimp-image-undo")
cfg = proc.create_config()
cfg.set_property("image", image)
proc.run(cfg)Environment
- GIMP: 3.2.4 (Windows 10)
- gimp-mcp commit: 09bfb2d (2026-05-29)
- Plugin installed per README Windows instructions into
%APPDATA%\GIMP\3.2\plug-ins\gimp-mcp-plugin - MCP server:
uv run gimp_mcp_server.py, connected via Claude Code over stdio
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