Status Line Generator
Generate a custom Claude Code status line script with your choice of columns and a color theme. Installs directly to ~/.claude/settings.json.
How It Works
Claude Code supports custom status lines via a shell script configured in ~/.claude/settings.json. The script receives session JSON on stdin (model, context window, workspace, vim, worktree, etc.) and prints formatted text to stdout.
This skill generates a bash script tailored to your preferences and installs it automatically.
Script Directory
Important: All scripts are located in the scripts/ subdirectory of this skill.
Agent Execution Instructions:
- Determine this SKILL.md file's directory path as
SKILL_DIR - Script path =
${SKILL_DIR}/scripts/<script-name>.mjs - Replace all
${SKILL_DIR}in this document with the actual path
Script Reference:
| Script | Purpose |
|---|---|
scripts/generate.mjs | Generate and install status line script from chosen options |
Prerequisites
- jq — required by the generated status line script to parse JSON input from Claude Code
- Bun — required to run the generator. Use
npx -y bunif not installed globally.
Usage
# Preview generated script
npx -y bun ${SKILL_DIR}/scripts/generate.mjs --elements model,context,effort,git,dir --theme gruvbox
# Generate and install
npx -y bun ${SKILL_DIR}/scripts/generate.mjs --elements model,context,effort,git,dir --theme dracula --installOptions
| Flag | Default | Description |
|---|---|---|
--elements <list> | model,context,cost,effort,style,git,dir | Comma-separated columns to display |
--theme <name> | gruvbox | Color theme — see table below |
--effort-icon <preset> | arrow (↯) for iconic themes, none otherwise | Override the effort prefix icon. Presets: arrow, bolt, flash, reason, dot, none. A raw character is also accepted. |
--install | off | Write script to ~/.claude/scripts/statusline.sh and update settings.json |
Columns
| Column | Description | Data source |
|---|---|---|
model | Active model name (e.g. "Opus 4.7") | model.display_name |
context | Progress bar + percentage — color changes with remaining capacity | context_window.remaining_percentage |
cost | Session API spend formatted as $X.XX in gold — hidden when rounds to $0.00 | cost.total_cost_usd from input JSON |
effort | Reasoning effort level — color changes with level | effortLevel in ~/.claude/settings.local.json → ~/.claude/settings.json |
style | Output style name (e.g. Explanatory, Learning) — hidden when "default" | output_style.name from input JSON |
git | Git branch name (yellow when dirty) | worktree.branch → git CLI |
dir | Repo basename (original repo when in a worktree) | worktree.original_repo_dir → workspace.current_dir |
worktree | Bold worktree:<id> label (hidden outside a worktree) | worktree.name → parent-dir basename via git CLI |
vim | Vim mode indicator (hidden when inactive) | vim.mode |
Color-changing elements
context — bar fill + percentage color scale with remaining capacity:
| Remaining | Color | Meaning |
|---|---|---|
| > 50% | green | plenty of context |
| 20–50% | yellow | watch out |
| < 20% | red | nearly full — compact soon |
effort — value + optional prefix icon color by level:
| Level | Color |
|---|---|
max, xhigh, high | bold red |
medium | yellow |
low, xlow, minimal | green |
| other / unset | dim (or hidden when completely unset) |
Themes
| Theme | Vibe | Icons rendered in bar |
|---|---|---|
gruvbox | Warm retro, muted | ✦ model · ↯ effort · ❋ style · ⌂ dir · ⊕ worktree · ⎇ git · ⌨ vim |
dracula | Modern dark, high saturation | ◈ model · ↯ effort · ❋ style · ⌂ dir · ⊕ worktree · ⎇ git · ⌨ vim |
robbyrussell | Classic oh-my-zsh | no prefix icons — colors + labels only |
minimal | Default terminal colors | no prefix icons — plain text |
The context column intentionally skips a prefix icon — the colored progress bar is already visually rich. The effort prefix (↯) is baked into iconic themes and can be overridden with --effort-icon.
Effort icons
Pass --effort-icon <preset> to swap the glyph in front of the effort value. Presets:
| Preset | Glyph | Notes |
|---|---|---|
arrow | ↯ | Electric arrow — default, narrow |
bolt | ϟ | Greek koppa — narrow lightning |
flash | ⚡ | Classic lightning — wide in emoji-presentation fonts |
reason | ∴ | Therefore |
dot | ◉ | Filled circle |
none | (hidden) | Drop the icon entirely |
You can also pass any raw character as --effort-icon <char>.
Worktree behavior: When inside a git worktree (detected via the input JSON's worktree.* fields or via git rev-parse --git-common-dir fallback), the worktree column shows a bold worktree:<id> label using the parent dir name (e.g. ~/.codex/worktrees/46a6/clawmaster → worktree:46a6). The git column prefers worktree.branch from the input JSON; the dir column prefers worktree.original_repo_dir so the repo identity stays stable across worktrees.
Invocation
This skill can be invoked with or without arguments:
- No args (
/webup-statusline): Interactive prompt viaAskUserQuestionto pick columns and theme. - With args (
/webup-statusline dracula): NLP parse for theme and column preferences.
Arg parsing (natural language)
The args string is free-form text. Use NLP to extract:
- theme — match against: gruvbox, robbyrussell, minimal, dracula. Recognize aliases (暗黑=dracula, 极简=minimal, 复古=gruvbox, レトロ=gruvbox).
- elements — look for mentions of: model, context/进度/コンテキスト, effort/推理强度/努力度, git/分支/ブランチ, dir/目录/ディレクトリ, worktree/工作树/ワークツリー, vim.
Unspecified fields use defaults: model,context,effort,git,dir columns, gruvbox theme.
Workflow
- If no args provided: Use
AskUserQuestionto ask 2 questions in a single prompt.AskUserQuestioncaps each question at 4 options, so offer curated presets for columns rather than an exhaustive toggle list. If the user picks "Other", interpret their free text as a comma-separated column list (or a natural-language description that maps to one). Q1 — Column preset (single): Which columns to display? Offer these 3 curated presets —AskUserQuestionwill auto-append an "Other" option that lets the user type a free-text column list or description. If the user picks the auto-added "Other", treat their free text as a comma-separated column list, or as a natural-language description to map to columns. Fall back toDefaultif parsing is ambiguous. Q2 — Theme (single): Color theme? If args provided: Parse theme and columns from args. Skip the prompt.
- "Everything (Recommended)" — model,context,cost,effort,style,git,dir,worktree (all columns that have a useful signal today; vim is excluded because most users don't use vim keybindings) - "Default" — model,context,effort,style,git,dir (balanced — drops cost and worktree; matches the skill's default flag value) - "Essentials" — model,context,git,dir (lean; no effort, no style, no cost) - "Dracula" — modern dark, purple/pink/cyan (Recommended) - "Gruvbox Dark" — warm retro palette, 24-bit true color - "Robbyrussell" — classic oh-my-zsh style, no icons - "Minimal" — no decoration, dim separators only
- Map user selections to script flags:
- Column preset → expand to the preset's canonical --elements list: - Everything → model,context,cost,effort,style,git,dir,worktree - Default → model,context,effort,style,git,dir - Essentials → model,context,git,dir - Other (auto-added by AskUserQuestion) → parse the user's free text; keep only recognized column names (model,context,cost,effort,style,dir,worktree,git,vim). If parsing is ambiguous, fall back to Default. - Theme → --theme value (one of gruvbox, dracula, robbyrussell, minimal)
- Run the generator with
--install:npx -y bun ${SKILL_DIR}/scripts/generate.mjs --elements <list> --theme <theme> --install - Tell user to restart Claude Code to see the new status line.
Output Examples
Dracula (all columns), remaining=49%, cost=$0.42, effort=high, output style=Explanatory, inside a worktree:
◈ Opus 4.7 | [■■■■■■■■■■□□□□□□□□□□] 51% | $0.42 | ↯ high | ❋ Explanatory | ⌂ clawmaster | ⊕ worktree:46a6 | ⎇ feat/xyz(bar yellow — 49% remaining; $0.42 gold session spend next to the bar; effort "high" bold red; purple ❋ Explanatory sits between effort and dir; context carries no prefix icon — the bar is already visual enough)
Gruvbox Dark (model + context + effort + dir + git), remaining=88%, effort=medium:
✦ Opus 4.7 | [■■□□□□□□□□□□□□□□□□□□] 12% | ↯ medium | ⌂ skills-cc | ⎇ main(bar green — 88% remaining; effort "medium" yellow)
Minimal (model + effort + dir + git), effort=low:
Claude Opus 4.7 · low · skills-cc · main(no prefix icons in minimal; effort "low" green)
Notes
- Generated script is saved to
~/.claude/scripts/statusline.sh - Running the skill again overwrites the existing script — just re-run to change theme or columns
- The script uses
jqto parse JSON input — make sure it's installed - Git dirty detection uses
--no-optional-locksto avoid interfering with other git operations