Scumble: free open-source inpainting editor with layers, full-res stitching and MCP support

Direction_Mountain · reddit · 2026-09-29

A developer released Scumble, a free open-source (GPL-3.0) inpainting editor that merges the mask-draw → generate → edge-fix loop into one app.

Key features

Rendering: use your own ComfyUI (local or RunPod) or API keys from fal.ai, Black Forest Labs (Flux.2), OpenAI, Gemini, OpenRouter and more, stored in the OS credential store.

Automation: everything is exposed over MCP so Claude, scripts, or agents can drive the editor; a built-in assistant asks before spending money.

Caveats: unsigned Windows installer (SmartScreen warnings), lightly tested Linux build, one-person project. Source and tutorials on GitHub.

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