My statusline.sh for Claude Code

statusline.sh

#!/bin/bash
# Put this file in ~/.claude/statusline.sh

# Read JSON input once
input=$(cat)

# Helper functions for common extractions
get_model_name() { echo "$input" | jq -r '.model.display_name'; }
get_current_dir() { echo "$input" | jq -r '.workspace.current_dir'; }
get_project_dir() { echo "$input" | jq -r '.workspace.project_dir'; }
get_version() { echo "$input" | jq -r '.version'; }
get_cost() { echo "$input" | jq -r '.cost.total_cost_usd'; }
get_duration() { echo "$input" | jq -r '.cost.total_duration_ms'; }
get_lines_added() { echo "$input" | jq -r '.cost.total_lines_added'; }
get_lines_removed() { echo "$input" | jq -r '.cost.total_lines_removed'; }
get_input_tokens() { echo "$input" | jq -r '.context_window.total_input_tokens'; }
get_output_tokens() { echo "$input" | jq -r '.context_window.total_output_tokens'; }
get_context_window_size() { echo "$input" | jq -r '.context_window.context_window_size'; }
get_current_usage() { echo "$input" | jq -r '.context_window.current_usage'; }
get_input_usage() { echo "$input" | jq -r '.context_window.current_usage.input_tokens'; }
get_cache_w_usage() { echo "$input" | jq -r '.context_window.current_usage.cache_creation_input_tokens'; }
get_cache_r_usage() { echo "$input" | jq -r '.context_window.current_usage.cache_read_input_tokens'; }

MODEL=$(get_model_name)
CONTEXT_SIZE=$(get_context_window_size)
USAGE=$(get_current_usage)
USAGE_IN=$(($(get_input_tokens) / 1000))
USAGE_OUT=$(($(get_output_tokens) / 1000))
# Format number with k suffix if >= 1000
format_k() {
  local val=$1
  if [ "$val" -ge 1000 ]; then
    echo "$((val / 1000))k"
  else
    echo "$val"
  fi
}

INPUT_USAGE_RAW=$(($(get_input_usage)))
CACHE_W_USAGE_RAW=$(($(get_cache_w_usage)))
CACHE_R_USAGE_RAW=$(($(get_cache_r_usage)))

INPUT_USAGE=$(format_k $INPUT_USAGE_RAW)
CACHE_W_USAGE=$(format_k $CACHE_W_USAGE_RAW)
CACHE_R_USAGE=$(format_k $CACHE_R_USAGE_RAW)
PERCENT_USED=$(echo "$input" | jq -r '.context_window.used_percentage // 0')

# ANSI color codes
GREEN='\033[32m'
YELLOW='\033[33m'
RED='\033[31m'
DIM='\033[90m'
RESET='\033[0m'

# Color based on usage percentage
PERCENT_INT=${PERCENT_USED%.*}
if [ "$PERCENT_INT" -ge 80 ]; then
  PERCENT_COLOR=$RED
elif [ "$PERCENT_INT" -ge 50 ]; then
  PERCENT_COLOR=$YELLOW
else
  PERCENT_COLOR=$GREEN
fi

COLORED_PERCENT="${PERCENT_COLOR}${PERCENT_USED}%${RESET}"

COST=$(printf "%.3f\n" $(get_cost))
VERSION=$(get_version)
WINDOW=$(($(get_context_window_size) / 1000))

echo -e "[$MODEL] ${COLORED_PERCENT} (${INPUT_USAGE}+${CACHE_W_USAGE}+${CACHE_R_USAGE}/${WINDOW}k) \$$COST ${DIM}v$VERSION${RESET}"