Account growth in YC / AWS

Yandex Cloud, AWS and GCP expose billing/usage via API. A simple daily check:

# YC Billing API
import os, datetime, requests, subprocess

def yc_usage_today():
    out = subprocess.check_output([
        "yc", "billing", "billing-account", "list", "--format=json",
    ])
    # simplified — in reality we call the Cloud Billing API REST
    ...

def handler(event, context):
    usd = yc_usage_today()
    yesterday = float(open("/tmp/yc-usd.txt").read() or "0") if os.path.exists("/tmp/yc-usd.txt") else usd
    if usd > yesterday * 2 and usd > 5:
        push("☁️ YC: расход вырос",
             f"Сегодня: ${usd:.2f}\nВчера: ${yesterday:.2f}",
             priority=9)
    open("/tmp/yc-usd.txt", "w").write(str(usd))
    return {"statusCode": 200}

def push(t, m, p):
    requests.post(f"{os.environ['NOTIFLY_URL']}/message",
                  params={"token": os.environ["NOTIFLY_TOKEN"]},
                  json={"title": t, "message": m, "priority": p}, timeout=5)

An alternative way — Yandex Cloud can send an alert to email when a limit is exceeded. Create an Email Inbox and set it as a recipient — each such email instantly becomes a push.

LLM API costs — the other half of the bill.

Account growth in YC / AWS

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