checkmyping.io

Know the second your site, server, or certificate goes down.

checkmyping is a simple, self-hostable uptime + certificate monitor with alerts. Add a website or server and it tells you whether it's up and how fast it responds.

🎥 Built in public on YouTube — LondonIAC. Each episode ships a new feature, and this repo is the code from that series. Star it to follow along.

Build status

• Part 1 — core monitor + dashboard (running locally)
• Part 2 — deployed live on Render (auto-deploy from GitHub)
• Part 3 — Supabase (Postgres) + user logins
• Part 4 — scheduled checks + uptime history
• Part 5 — Stripe plans (1 free / 10 / 100 targets)
• Part 6 — email alerts (Resend)
• Part 7 — TLS certificate-expiry monitoring
• Part 8 — Telegram alerts with reply-back
• Part 9 — WhatsApp alerts

Run it locally (Windows)

Create the virtual environment:

python -m venv .venv

Activate it — pick your shell:

# PowerShell
.venv\Scripts\Activate.ps1

# Git Bash
source .venv/Scripts/activate

Then install and run (same in both shells):

pip install -r requirements.txt
uvicorn app.main:app --reload

Then open http://127.0.0.1:8000.

Not fussed about activating? This one-liner works in any shell: .venv\Scripts\python -m uvicorn app.main:app --reload (PowerShell) / .venv/Scripts/python.exe -m uvicorn app.main:app --reload (Git Bash).

• Enter a full URL (https://example.com) for an HTTP check.
• Enter host:port (example.com:443) for a TCP check.

How the checks work

No raw-socket ICMP ping (that needs root and won't run on managed hosts). Instead:

• HTTP check — GET the URL; UP if the status is under 400, with real response time.
• TCP check — open a socket to host:port; UP if it connects, with real latency.

This is exactly how commercial uptime monitors work.

Tech

Python · FastAPI · Jinja2 · SQLite (→ Supabase later) · Render · Stripe · Telegram

License

MIT — do what you like with the code. The hosted service is the paid part.

checkmyping