Claude Code custom statusline script - shows model, folder, git branch, and token usage with progress bar

statusline-command.sh

#!/bin/bash
input=$(cat)
MODEL=$(echo "$input" | jq -r '.model.display_name // "Claude"')
DIR=$(echo "$input" | jq -r '.workspace.current_dir // "~"')
FOLDER="${DIR##*/}"

# Git branch
BRANCH=""
if git -C "$DIR" rev-parse --git-dir > /dev/null 2>&1; then
    BRANCH=$(git -C "$DIR" branch --show-current 2>/dev/null)
    [ -z "$BRANCH" ] && BRANCH=$(git -C "$DIR" rev-parse --short HEAD 2>/dev/null)
fi

# Token usage - use current_usage for actual context window consumption
USAGE=$(echo "$input" | jq '.context_window.current_usage')
TOKENS_MAX=$(echo "$input" | jq -r '.context_window.context_window_size // 200000')

if [ "$USAGE" != "null" ]; then
    # Sum input tokens + cache tokens for total context consumption
    TOKENS_USED=$(echo "$USAGE" | jq -r '(.input_tokens // 0) + (.cache_creation_input_tokens // 0) + (.cache_read_input_tokens // 0)')
else
    TOKENS_USED=0
fi

# Calculate percentage remaining until autocompact (matches Claude's built-in calculation)
# Autocompact threshold = context_window - max_output_reserved (~32k) - autocompact_buffer (13k)
if [ "$TOKENS_MAX" -gt 0 ] 2>/dev/null; then
    AUTOCOMPACT_THRESHOLD=$((TOKENS_MAX - 32000 - 13000))
    if [ "$AUTOCOMPACT_THRESHOLD" -gt 0 ]; then
        PCT_REMAINING=$(( (AUTOCOMPACT_THRESHOLD - TOKENS_USED) * 100 / AUTOCOMPACT_THRESHOLD ))
        [ "$PCT_REMAINING" -lt 0 ] && PCT_REMAINING=0
        PCT=$((100 - PCT_REMAINING))  # Convert "remaining" to "used"
    else
        PCT=0
    fi
else
    PCT=0
fi

# Format token count (e.g., 45.2k)
if [ "$TOKENS_USED" -ge 1000 ]; then
    TOKENS_FMT=$(awk "BEGIN {printf \"%.1fk\", $TOKENS_USED/1000}")
else
    TOKENS_FMT="$TOKENS_USED"
fi

# Progress bar (10 chars wide)
BAR_WIDTH=10
FILLED=$((PCT * BAR_WIDTH / 100))
EMPTY=$((BAR_WIDTH - FILLED))
BAR=$(printf '%*s' "$FILLED" '' | tr ' ' '█')$(printf '%*s' "$EMPTY" '' | tr ' ' '░')

# Build output
if [ -n "$BRANCH" ]; then
    echo "[$MODEL] $FOLDER ($BRANCH) | ${TOKENS_FMT} [$BAR] ${PCT}%"
else
    echo "[$MODEL] $FOLDER | ${TOKENS_FMT} [$BAR] ${PCT}%"
fi