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Main menuAdd alertMy alertsAlert checkPrices updater · every minute
Overview
A small Telegram bot that does one job: people pick a coin and a target — a price, or a percent rise or fall — and the bot messages them once when it happens. Prices come from CoinGecko every minute. No API keys, no payments, no extras.
Setup Requirements
- Connect your Telegram bot: Settings → Bots → paste the token from @BotFather.
- Press Deploy. The bot only answers once the flows are published.
- Wait about a minute so the Prices updater loads the first prices, then send /start and add a test alert.
- Optional: change trackedCoins (CoinGecko ids, comma-separated) and maxAlerts under Variables.
Node Breakdown
- People send /start and tap New alert
- They pick a coin — Bitcoin, Ethereum, Solana, or type another tracked coin — and see its current price
- They choose what to watch — rises by %, falls by %, or reaches a price — and send the number
- The bot checks prices every minute and messages them once when the alert hits, then removes that alert
- My alerts lists what they are watching and lets them remove one coin or everything
Details
Good to know
- Prices come from CoinGecko's free public API, loaded once a minute for the whole bot — no API key, and no request per user.
- People can only set alerts on coins in the trackedCoins list. It ships with Bitcoin, Ethereum, Solana, and TON; add any CoinGecko coin id.
- Each person can keep a limited number of alerts at once (5 by default, set in maxAlerts), so one user cannot pile up hundreds.
- An alert fires once and is removed, so nobody gets the same message every minute.
- Alerts are checked about once a minute, so a spike that reverses within that minute can be missed. It's a heads-up tool, not a trading signal.
Common questions
- Which coins should people be able to watch?
- How many alerts can one person keep at once?
- Do you need more than alerts — charts, scans, a digest, or paid tiers? Then the Advanced Crypto Terminal fits better.
Keep in mind
- Don't promise instant alerts — prices refresh once a minute.
- Don't present alerts as financial advice or trading signals.
- Don't put hundreds of coins in trackedCoins — one CoinGecko call covers the whole list, and the free API has rate limits.
