A zero-maintenance NEPSE assistant — price alerts, portfolio tracking, market news and a technical screener — built entirely on Cloudflare’s free tier. It reads NEPSE’s token-authenticated endpoints (there is no public API), polls watched stocks every 5 minutes during market hours, and pushes alerts to Telegram.
Infrastructure Cost
Cloudflare Workers free tier
Poll Interval
Watched stocks, during market hours
Scheduled Jobs
Open, in-hours poll, close, end of day
Open & Close Snapshots
Every listed security at 11:00 and 15:00 NPT
| Symbol | LTP (NPR) | Day Change | RSI (14) | SMA 20/50 | Signal Trigger | Trend Sparkline |
|---|---|---|---|---|---|---|
SHIVMShivam Cements Ltd. | 524.00 | +4.80% | 64.20Neutral | SMA20 > SMA50 | MACD bullish | |
NICANIC Asia Bank | 418.50 | +2.15% | 28.40Oversold | SMA20 < SMA50 | Buy zone active | |
HDLHimalayan Distillery | 1,390.00 | +1.45% | 54.80Neutral | SMA20 > SMA50 | MACD bearish |
Four scheduled jobs, one D1 database and a webhook bot — all running on the Cloudflare Workers free tier.
Cron Triggers run Mon–Fri during NEPSE hours (11:00–15:00 NPT): a full-market snapshot at open and close, and a watched-stocks poll every 5 minutes in between. NEPSE has no public API, so the Worker derives the token for its authenticated endpoints in pure TypeScript.
SMA 20/50, Wilder’s RSI (14), MACD and ATR are computed inside the Worker over accumulated daily OHLC history — no external maths service. A statistical recommender turns trend, momentum and range position into buy/sell zones.
Daily OHLC bars, holdings, alert rules and live quotes live in Cloudflare D1. Quotes fresher than 5 minutes are served straight from D1; market summaries and charts sit in the free Cache API. Workers KV was dropped after its free-tier write cap ran out daily.
Price above/below, % move and volume-spike rules are checked on every poll and pushed to Telegram through a grammY webhook bot. Jobs run inside ctx.waitUntil(), and each rule has a 4-hour cooldown so it never repeats itself.
async scheduled(event: ScheduledEvent, env: Env, ctx: ExecutionContext) {
const job = (async () => {
switch (event.cron) {
case "15 5 * * mon-fri": // 11:00 NPT open — new listings + full snapshot
await runMarketOpen(env); break;
case "*/5 5-9 * * mon-fri": // in hours — watched stocks every 5 min
await pollWatched(env); break;
case "15 9 * * mon-fri": // 15:00 NPT close — full snapshot
await fullSnapshot(env); break;
case "30 9 * * mon-fri": // EOD — OHLC history, screener, news digest
await runEod(env); break;
}
})();
ctx.waitUntil(job);
}
// pollWatched: market-window guard → D1 quote cache → evaluate rules
// price_above · price_below · pct_change · volume_spike (4 h cooldown)Conventional financial screeners rely on dedicated VPS instances with persistent WebSocket servers, easily incurring $25–$80 per month. By taking advantage of Cloudflare’s distributed execution model, this engine operates inside zero cold-start environments with zero idle overhead.
When one of your rules fires — a price crossing, a % move or a volume spike — the bot messages you within the same 5-minute poll. The bot is private: it’s locked to the owner’s Telegram account, and the web dashboard’s portfolio is gated by an access key.
SHIVM rose above 520 — LTP 524.00
NICA moved 4.10% (≥4%) — LTP 418.50
How I used Cloudflare Workers, D1, and Cron Triggers to run a live NEPSE alert engine — Telegram bot, portfolio tracking, and a technical screener — with no servers to maintain and no monthly bill.
NEPSE has no public API and doesn't love being polled. Here's how I use Cloudflare Cron Triggers aligned to market hours to fetch data efficiently — without IP blocks or runaway CPU.