Claude Code's status line UI

statusline-command.py

import json, sys
from datetime import datetime, timezone
from pathlib import Path

data = json.load(sys.stdin)

RED = "\033[0;31m"
BLUE = "\033[01;34m"
YELLOW = "\033[0;33m"
CYAN = "\033[0;36m"
RESET = "\033[00m"

cwd = data.get("cwd") or "."
home = str(Path.home())
if cwd == home:
    cwd = "~"
elif cwd.startswith(home + "/"):
    cwd = "~" + cwd[len(home):]
parts = [f"{BLUE}{cwd}{RESET}"]

model = data.get("model", {}).get("display_name")
if model:
    model = model.replace(" context", "")
    parts.append(f"{YELLOW}{model}{RESET}")

used = data.get("context_window", {}).get("used_percentage")
if used is not None:
    parts.append(f"{CYAN}ctx:{used:.0f}%{RESET}")

rl = data.get("rate_limits", {})

def parse_reset(val):
    if isinstance(val, (int, float)):
        return datetime.fromtimestamp(val, tz=timezone.utc).astimezone()
    return datetime.fromisoformat(str(val)).astimezone()

five = rl.get("five_hour", {})
if five.get("used_percentage") is not None:
    t = parse_reset(five["resets_at"])
    parts.append(f"{YELLOW}5h:{five['used_percentage']:.0f}%({t:%H:%M}){RESET}")

seven = rl.get("seven_day", {})
if seven.get("used_percentage") is not None:
    t = parse_reset(seven["resets_at"])
    parts.append(f"{RED}7d:{seven['used_percentage']:.0f}%({t:%m/%d %H:%M}){RESET}")

print(" ".join(parts), end="")