itch.io Publish (butler)

Get a build onto an itch.io page and keep it updated. The page is created in the browser; all uploads go through butler, itch.io's command-line tool, with one command you'll use forever: butler push. butler diffs against the previous build and uploads only what changed. Deep CI/CD and flag detail lives in references/butler-ci.md.

When to use

• Use when creating/updating an itch.io project page, installing or logging in to butler, uploading a build with butler push, choosing channel names, versioning uploads, or shipping a jam/demo/release build to itch.io.
• Triggers: butler push, butler login, channels, .itch.toml, "publish on itch", "upload to itch".

When not to use: publishing on Steam (use steam-publish); jam scope/planning (use game-jam — this skill is only the upload mechanics); building the game itself (engine skills).