SSL Checker

Monitors SSL certificates, URL availability, JSON API endpoints, and wallet balances. Sends alerts to Discord.

Structure

checks/
  ssl.js       - SSL certificate expiration (alerts < 10 days)
  url.js       - HTTPS GET: 200 + size threshold + <title> + parking-page heuristic
  api.js       - JSON endpoint health: 200 + JSON parse + expected key/value
  wallet.js    - ERC20/ETH wallet balance check (Base chain)
lib/
  config.js    - DOMAINS, API_ENDPOINTS, WALLETS, RPC endpoints
  notify.js    - Discord notification + helpers
deploy/
  deploy.sh    - Deploy to newtown server

cron-daily.js  - SSL (run daily)
cron-hourly.js - URL + API + wallet (run hourly)

Config

lib/config.js:

• DOMAINS — array of strings or { host, expectTitle? } objects. Pure SPAs without server-rendered <title> (e.g. steemhunt.com) set expectTitle: false.
• API_ENDPOINTS — array of { name, url, expectedKey, expectedValue? }. JSON endpoint is healthy when content-type is JSON, body parses, and expectedKey exists (and matches expectedValue if given).

Setup

cp .env.example .env   # add DISCORD_WEBHOOK_URL
npm install

Run locally

npm run daily
npm run hourly

Deploy

npm run deploy

Clones/pulls repo on newtown:~/ssl-checker, installs deps, copies .env, and sets up cron jobs:

• Daily (11:00 UTC): cron-daily.js - SSL certs + wallet balances
• Hourly: cron-hourly.js - URL availability + wallet balances