Claude statusline

statusline.sh

#!/usr/bin/env bash
# ~/.claude/statusline.sh
# Claude Code status line — polished dev-tool aesthetic

input=$(cat)

# ── Parse JSON fields ────────────────────────────────────────────────────────
cwd=$(echo "$input"        | jq -r '.workspace.current_dir // .cwd // ""')
model=$(echo "$input"      | jq -r '.model.display_name // ""')
used_pct=$(echo "$input"   | jq -r '.context_window.used_percentage // empty')
in_tok=$(echo "$input"     | jq -r '.context_window.current_usage.input_tokens // empty')
out_tok=$(echo "$input"    | jq -r '.context_window.current_usage.output_tokens // empty')
total_in=$(echo "$input"   | jq -r '.context_window.total_input_tokens // 0')
total_out=$(echo "$input"  | jq -r '.context_window.total_output_tokens // 0')
vim_mode=$(echo "$input"   | jq -r '.vim.mode // empty')
effort=$(echo "$input"     | jq -r '.effort.level // empty')
model_id=$(echo "$input"   | jq -r '.model.id // ""')

# ── Derived values ────────────────────────────────────────────────────────────
dir=$(basename "$cwd")
[ -z "$dir" ] && dir="~"

# Per-model pricing ($/M tokens). Match on model id first, fall back to display name.
# Note: ignores the 1M-context premium tier above ~200k input tokens.
model_key=$(printf '%s %s' "$model_id" "$model" | tr '[:upper:]' '[:lower:]')
case "$model_key" in
  *opus*)   in_rate=15.00; out_rate=75.00 ;;
  *haiku*)  in_rate=1.00;  out_rate=5.00  ;;
  *sonnet*) in_rate=3.00;  out_rate=15.00 ;;
  *)        in_rate=3.00;  out_rate=15.00 ;;
esac

# Session cost estimate from cumulative session totals
cost=""
if [ -n "$total_in" ] && [ "$total_in" != "0" ]; then
  cost=$(awk "BEGIN {
    input_cost  = ($total_in  / 1000000) * $in_rate;
    output_cost = ($total_out / 1000000) * $out_rate;
    total = input_cost + output_cost;
    if (total < 0.01) printf \"\$0.00\";
    else if (total < 1.00) printf \"\$%.3f\", total;
    else printf \"\$%.2f\", total;
  }")
fi

# Token display (session totals, human-readable)
tok_display=""
total_tok=$((total_in + total_out))
if [ "$total_tok" -gt 0 ]; then
  tok_display=$(awk "BEGIN {
    t = $total_tok;
    if (t >= 1000000) printf \"%.1fM\", t/1000000;
    else if (t >= 1000) printf \"%.0fk\", t/1000;
    else printf \"%d\", t;
  }")
fi

# Context used bar (5-segment mini bar)
ctx_bar=""
if [ -n "$used_pct" ]; then
  segments=$(awk "BEGIN { printf \"%d\", ($used_pct / 100) * 5 + 0.5 }")
  [ "$segments" -gt 5 ] && segments=5
  [ "$segments" -lt 0 ] && segments=0
  empty_count=$((5 - segments))
  filled=""
  empty=""
  [ "$segments"    -gt 0 ] && filled=$(printf '%.0s█' $(seq 1 "$segments"))
  [ "$empty_count" -gt 0 ] && empty=$(printf  '%.0s░' $(seq 1 "$empty_count"))
  ctx_bar="${filled}${empty}"
fi

# ── ANSI color helpers (256-color) ────────────────────────────────────────────
# Foreground: \e[38;5;<n>m  Background: \e[48;5;<n>m  Reset: \e[0m
R='\e[0m'

# Palette
c_dim='\e[38;5;240m'       # muted grey — separators, labels
c_dir='\e[38;5;75m'        # soft blue — directory
c_cost='\e[38;5;215m'      # warm amber — cost
c_tok='\e[38;5;109m'       # steel blue — tokens
c_ctx_filled='\e[38;5;67m' # muted teal — used context
c_ctx_empty='\e[38;5;236m' # very dark — empty context
c_model='\e[38;5;238m'     # near-invisible grey — model (subtle)
c_vim='\e[38;5;185m'       # soft yellow — vim mode
c_sep='\e[38;5;237m'       # dark separator

SEP="${c_sep}│${R}"

# ── Build segments ────────────────────────────────────────────────────────────
parts=()

# 1. Directory
parts+=("${c_dir}${dir}${R}")

# 2. Cost
if [ -n "$cost" ]; then
  parts+=("${c_cost}${cost}${R}")
fi

# 3. Tokens + context bar
if [ -n "$tok_display" ]; then
  tok_seg="${c_tok}${tok_display}${R}"
  if [ -n "$ctx_bar" ]; then
    # Color filled vs empty block chars via sed substitution
    esc=$(printf '\033')
    filled_color="${esc}[38;5;67m"
    empty_color="${esc}[38;5;236m"
    reset_color="${esc}[0m"
    colored_bar=$(printf '%s' "$ctx_bar" \
      | sed "s/█/${filled_color}█${reset_color}/g;s/░/${empty_color}░${reset_color}/g")
    tok_seg+=" ${c_dim}[${R}${colored_bar}${c_dim}]${R}"
  fi
  parts+=("$tok_seg")
fi

# 4. Effort level (only when non-default / interesting)
if [ -n "$effort" ] && [ "$effort" != "medium" ]; then
  parts+=("${c_dim}effort:${effort}${R}")
fi

# 5. Vim mode
if [ -n "$vim_mode" ]; then
  parts+=("${c_vim}${vim_mode}${R}")
fi

# 6. Model (subtle, rightmost)
if [ -n "$model" ]; then
  parts+=("${c_model}${model}${R}")
fi

# ── Join with separator ───────────────────────────────────────────────────────
output=""
for i in "${!parts[@]}"; do
  if [ $i -gt 0 ]; then
    output+=" ${SEP} "
  fi
  output+="${parts[$i]}"
done

printf "%b\n" "$output"