Lumen Agent

Lumen Agent is an open-source photo-editing agent for macOS that turns a plain-language instruction into edits on one photo or a selected set. It plans the work, finds the relevant objects, makes the changes and checks the result against the original. In Plan first mode, users review the batch plan before edits begin. It can recolor clothing and objects, remove distractions, adjust selected regions and transform a person's outfit. Across a selected set, it reviews each photo and adapts the instruction to its contents. It can ask for clarification, group related edits, apply optional tone and color corrections, straighten tilted photos and flag misfires. Spoken instructions can be transcribed into editable text before they run. Users can revise group instructions and exclude photos before approval. During execution, a live view shows planning, object selection, redraw and checking over the photo. Edits remain separate, non-destructive layers, with before-and-after comparison and undo. Original files stay intact. Lumen Agent and its standalone app, Lumen Studio, were built during this hackathon. The agent also runs inside my existing private Mac photo editor, which predates the event and is not part of the public submission. The public Swift package includes Studio, a command-line tool and recorded examples that reviewers can replay without an API key or account.