Example of Claude Code status line command script

statusline-command

#!/bin/bash

# Read JSON input from stdin
input=$(cat)

# Extract git remote repo name
cwd=$(echo "$input" | jq -r '.workspace.current_dir // empty')
reponame=""
if [ -n "$cwd" ] && [ -d "$cwd" ]; then
    remote_url=$(git -C "$cwd" --no-optional-locks remote get-url origin 2>/dev/null)
    if [ -n "$remote_url" ]; then
        reponame=$(basename "$remote_url" .git)
    fi
fi
reponame="${reponame:-"~"}"

# Get git branch if in a git repository
branch=""
if [ -n "$cwd" ] && [ -d "$cwd" ]; then
    branch=$(git -C "$cwd" --no-optional-locks branch --show-current 2>/dev/null)
fi

# Get git worktree name
worktree=""
if [ -n "$cwd" ] && [ -d "$cwd" ]; then
    wt_path=$(git -C "$cwd" --no-optional-locks rev-parse --show-toplevel 2>/dev/null)
    [ -n "$wt_path" ] && worktree=$(basename "$wt_path")
fi

# Extract context usage percentage (pre-calculated field)
used_pct=$(echo "$input" | jq -r '.context_window.used_percentage // empty')
if [ -n "$used_pct" ]; then
    used_pct=$(printf "%.0f" "$used_pct")
    context="${used_pct}% context"
else
    context="0% context"
fi

# Extract session cost
cost_usd=$(echo "$input" | jq -r '.cost.total_cost_usd // 0')
cost_fmt=$(printf '$%.2f' "$cost_usd")

# Extract total tokens as request volume
input_tokens=$(echo "$input" | jq -r '.context_window.total_input_tokens // 0')
output_tokens=$(echo "$input" | jq -r '.context_window.total_output_tokens // 0')
total_tokens=$(( input_tokens + output_tokens ))
# Format tokens in K
if [ "$total_tokens" -ge 1000000 ]; then
    tokens_fmt=$(printf '%.1fM' "$(echo "$total_tokens / 1000000" | bc -l)")
elif [ "$total_tokens" -ge 1000 ]; then
    tokens_fmt=$(printf '%.0fK' "$(echo "$total_tokens / 1000" | bc -l)")
else
    tokens_fmt="${total_tokens}"
fi

# Build output string
output="$reponame"
[ -n "$branch" ] && output="$output | $branch"
[ -n "$worktree" ] && output="$output | $worktree"
output="$output | $context | ${tokens_fmt} tok | $cost_fmt"

echo "$output"