FreeTier Sentinel
Datadog for free-tier limits — alerts before the cliff
What is FreeTier Sentinel?
Like Datadog, but for free-tier limits. Email at 80% — before the cliff. Every cloud shows usage. None alert you at 80%. Cloudflare, Vercel, Render, Supabase — same gap. Live now: Cloudflare Workers + GitHub Actions + Vercel Next 2 weeks: Supabase, Render, Resend, Neon, R2 Free 3 services, 12h checks, email Pro — $5/mo Unlimited, hourly checks, Discord + Telegram Open source. Runs on Cloudflare Workers — monitors its own free tier.
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