Aether CLI

Aether CLI

Aether's CLI has two operating modes. Knowing which you need is the entire mental model.

1. Standalone (works without GUI)

Flags start with --. Read/write files directly, no running process required.

aether --generate ~/wallpapers/forest.jpg              # extract + apply theme
aether --extract-palette ~/wallpapers/forest.jpg       # extract only, no apply
aether --list-blueprints
aether --apply-blueprint my-theme
aether --color-info '#8b3a62'                          # all reps of a color
aether --contrast '#8b3a62' '#ffffff'                  # WCAG ratio + grade
aether --palette-from-color '#8b3a62'                  # derive 16-color palette
aether --import-base16 ./catppuccin-mocha.yaml

Exits 0 on success, 1 on error. Errors go to stderr unless --json is set (then {"error": "..."} on stdout).

2. Remote control (requires running GUI)

Subcommands without leading --. Talk to the GUI over a Unix socket.

aether status                    # live editor state — palette, lightMode, mode, wallpaper
aether extract ~/w/forest.jpg    # load wallpaper into the editor
aether set-color 4 '#89b4fa'     # change palette slot 4
aether adjust --vibrance 0.3 --saturation -0.1
aether set-mode pastel
aether apply                     # write theme files and reload apps
aether toggle-light-mode
aether load-blueprint my-theme   # load into editor (does NOT apply)
aether apply-blueprint my-theme  # load AND apply in one step
aether set-wallpaper ~/w/forest.jpg

If the GUI isn't running, these fail with a socket error. Launch aether first or run the non-dash variants.

aether status returns what the editor currently shows (as of the state-sync feature) — edits in the GUI propagate to the Go state within ~300ms of the last change. Before that feature, status was stale after GUI edits; don't write scripts assuming the old behavior.

Extraction modes

The mode controls the palette-generation strategy in extraction/. Pass with --extract-mode to the standalone commands or set-mode via IPC:

• normal (default) — dominant-color median-cut
• monochromatic — shades/tints of a single hue
• analogous — neighbours on the color wheel
• pastel, muted, colorful, bright, material

List at runtime: aether --list-modes.

JSON for scripting

Append --json to most read-oriented standalone commands for stable machine-readable output:

aether --color-info '#8b3a62' --json
aether --palette-info my-theme --json          # blueprint name or JSON array
aether --list-favorites --json
aether --current-theme --json

--json is not honoured by the IPC remote-control subcommands — those always print a human status block. Parse the output or use aether --current-theme --json instead.

Palette-as-argument

Commands that take "a palette" accept either:

• A blueprint name: aether --palette-info my-theme
• A raw JSON array of 16 hex strings: aether --palette-info '["#000000", ...]'

Common one-liners

# Pick a random wallpaper and theme from it
aether --generate "$(aether --random-wallpaper)"

# Apply every saved blueprint in a rotation (cron)
aether --apply-blueprint "$(aether --list-blueprints --json | jq -r '.[].name' | shuf -n1)"

# Diff current editor palette against a blueprint
diff <(aether status) <(aether --show-blueprint my-theme)

Pitfalls

• aether --generate vs aether extract — the dashed version runs the full extract-and-apply pipeline offline; the undashed one just loads into the editor of a running GUI. Easy to confuse.
• Blueprint name matching is exact. aether --show-blueprint my-theme fails silently with a different message than my_theme. Use aether --list-blueprints to confirm names.
• ~/ expansion is handled by the CLI for path args (expandHome in cli/cli.go), but only for arguments it knows are paths. Trust the shell to expand it when in doubt.
• No global config for the CLI. --light-mode and --extract-mode <mode> must be passed every invocation; they're not persisted across calls.
• The Wails GUI writes its own config at ~/.config/aether/ — the CLI reads from it (for blueprints, favorites) but doesn't mutate it through --generate. To change default extraction mode, use the GUI or set it in the appropriate JSON file there.

Reference

Full exhaustive list: aether --help. This skill covers the patterns the help text doesn't — don't re-read --help verbatim to the user.

Source of truth: cli/cli.go (dispatch), cli/ipc_commands.go (remote-control), cli/output.go (JSON + palette-name parsing).