claude_code.sh

#!/usr/bin/env bash
# Claude Code status line. Receives JSON on stdin.

input=$(cat)

model=$(echo "$input" | jq -r '.model.display_name // "Unknown model"')
session_name=$(echo "$input" | jq -r '.session_name // empty')
cwd=$(echo "$input" | jq -r '.workspace.current_dir // .cwd // ""')
worktree_branch=$(echo "$input" | jq -r '.worktree.branch // empty')

used_pct=$(echo "$input" | jq -r '.context_window.used_percentage // empty')
cost_usd=$(echo "$input" | jq -r '.cost.total_cost_usd // empty')

transcript=$(echo "$input" | jq -r '.transcript_path // ""')
tool_count=0
if [ -n "$transcript" ] && [ -f "$transcript" ]; then
  tool_count=$(grep -c '"tool_use"' "$transcript" 2>/dev/null || echo 0)
fi

five_h=$(echo "$input" | jq -r '.rate_limits.five_hour.used_percentage // empty')
five_h_resets=$(echo "$input" | jq -r '.rate_limits.five_hour.resets_at // empty')
seven_d=$(echo "$input" | jq -r '.rate_limits.seven_day.used_percentage // empty')
seven_d_resets=$(echo "$input" | jq -r '.rate_limits.seven_day.resets_at // empty')

git_branch=""
if [ -n "$cwd" ] && git -C "$cwd" rev-parse --git-dir >/dev/null 2>&1; then
  git_branch=$(git -C "$cwd" --no-optional-locks symbolic-ref --short HEAD 2>/dev/null \
    || git -C "$cwd" --no-optional-locks rev-parse --short HEAD 2>/dev/null)
fi

RESET='\033[0m'
BOLD='\033[1m'
CYAN='\033[38;5;30m'
YELLOW='\033[38;5;172m'
GREEN='\033[32m'
MAGENTA='\033[35m'
RED='\033[31m'
BLUE='\033[34m'
DIM='\033[2m'

sep="$(printf "${DIM}|${RESET}")"

line1=()
line1+=("$(printf "${CYAN}${BOLD}%s${RESET}" "$model")")
[ -n "$session_name" ] && line1+=("$(printf "${DIM}[%s]${RESET}" "$session_name")")
if [ -n "$cwd" ]; then
  short_cwd="${cwd/#$HOME/~}"
  line1+=("$(printf "${BLUE}%s${RESET}" "$short_cwd")")
fi
[ -n "$git_branch" ] && line1+=("$(printf "${MAGENTA} %s${RESET}" "$git_branch")")
[ -n "$worktree_branch" ] && line1+=("$(printf "${MAGENTA}[wt:%s]${RESET}" "$worktree_branch")")

line2=()

used_int=$(printf '%.0f' "${used_pct:-0}")
if [ "$used_int" -ge 80 ]; then ctx_color="$RED"
elif [ "$used_int" -ge 50 ]; then ctx_color="$YELLOW"
else ctx_color="$GREEN"; fi
line2+=("$(printf "${ctx_color}ctx:%d%%${RESET}" "$used_int")")

five_h_val=$(printf '%.0f' "${five_h:-0}")
seven_d_val=$(printf '%.0f' "${seven_d:-0}")
five_h_reset_str=""
if [ -n "$five_h_resets" ]; then
  now=$(date +%s)
  remaining=$((five_h_resets - now))
  if [ "$remaining" -gt 0 ]; then
    hrs=$((remaining / 3600)); mins=$(( (remaining % 3600) / 60 ))
    five_h_reset_str=$(printf " (r:%dh%02dm)" "$hrs" "$mins")
  fi
fi
seven_d_reset_str=""
if [ -n "$seven_d_resets" ]; then
  now=${now:-$(date +%s)}
  remaining=$((seven_d_resets - now))
  if [ "$remaining" -gt 0 ]; then
    days=$((remaining / 86400)); hrs=$(( (remaining % 86400) / 3600 ))
    seven_d_reset_str=$(printf " (r:%dd%dh)" "$days" "$hrs")
  fi
fi
line2+=("$(printf "${YELLOW}5h:%d%%%s 7d:%d%%%s${RESET}" "$five_h_val" "$five_h_reset_str" "$seven_d_val" "$seven_d_reset_str")")

# Requires the UserPromptSubmit hook in settings.json to write the timestamp file.
idle_str=""
session_id=$(echo "$input" | jq -r '.session_id // empty')
idle_file="$HOME/.claude/last-user-input-${session_id}"
if [ -n "$session_id" ] && [ -f "$idle_file" ]; then
  last_input=$(cat "$idle_file")
  now=${now:-$(date +%s)}
  idle=$((now - last_input))
  if [ "$idle" -ge 3600 ]; then
    idle_str=$(printf "%dh%dm" $((idle/3600)) $((idle%3600/60)))
  elif [ "$idle" -ge 60 ]; then
    idle_str=$(printf "%dm%ds" $((idle/60)) $((idle%60)))
  else
    idle_str=$(printf "%ds" "$idle")
  fi
fi

line2+=("$(printf "${CYAN}tools:%s${RESET}" "$tool_count")")

if [ -n "$idle_str" ]; then
  if [ "$idle" -ge 300 ]; then idle_color="$YELLOW"
  else idle_color="$DIM"; fi
  line2+=("$(printf "${idle_color}idle:%s${RESET}" "$idle_str")")
fi

cost_rounded=$(printf '%.1f' "${cost_usd:-0}")
line2+=("$(printf "${GREEN}${DIM}est:\$%s${RESET}" "$cost_rounded")")

join() { local out=""; for p in "$@"; do [ -z "$out" ] && out="$p" || out="${out}${sep}${p}"; done; printf "%b" "$out"; }
printf "%b\n" "$(join "${line1[@]}")"
printf "%b\n" "$(join "${line2[@]}")"