#!/usr/bin/env python3
"""metadata.user_id + service_tier with the Python SDK; usage.service_tier tells which tier served the request.

STATUS: LIVE_VERIFIED 2026-09-18 with anthropic 1.7.0 (.venv). Run: .venv/bin/python examples/anthropic/messages/metadata.py
Key comes from .env (loaded by scripts/live.py); never printed.
"""
import sys
from pathlib import Path

sys.path.insert(0, str(Path(__file__).resolve().parents[3]))
from scripts import live  # noqa: E402  (loads .env, gives log_request)
from anthropic import Anthropic  # noqa: E402

client = Anthropic()
MODEL = "claude-haiku-4-5-20251001"
msg = client.messages.create(model=MODEL, max_tokens=16, metadata={"user_id": "atlas-user-0001"}, service_tier="auto",
                             messages=[{"role": "user", "content": "Reply with OK."}])
print(msg.content[0].text, "| service_tier:", msg.usage.service_tier)
live.log_request("anthropic", "POST", "/v1/messages", 200, 0.00004, "example metadata.py")