Frequently Asked Questions
General
What is Coin Sniffer?
Coin Sniffer is a real-time cryptocurrency market screener that monitors 200+ Binance Futures pairs and sends you alerts when significant price moves, volume anomalies, or momentum patterns are detected. It saves you from watching charts 24/7.
Which exchange does it monitor?
Binance Futures (USDT perpetual contracts only). Spot pairs, coin-margined futures, or other exchanges are not currently supported.
How many pairs are tracked?
200+ pairs — all Binance USDT perpetual pairs that meet minimum liquidity thresholds. The exact list is updated periodically as new pairs are listed or delisted on Binance.
Is the data real-time?
Yes. The backend subscribes to the Binance Futures WebSocket and processes every 1-minute candle as it closes. Alert evaluation happens within milliseconds of each candle. The screener table in your browser updates every 5 seconds.
Is this a bot / auto-trading tool?
No. Coin Sniffer is an informational screener — it detects patterns and notifies you. It does not place trades on your behalf. All trading decisions are yours.
Alerts
How quickly do alerts fire?
From candle close to WebSocket delivery: under 100 milliseconds in normal conditions.
Webhook delivery (Discord/Telegram) adds network round-trip time — typically 100–500ms depending on your location and the destination server.
Why am I not getting alerts for a coin I'm watching?
A few reasons:
- The coin may not be meeting the alert conditions. Most rules require multiple timeframes to align simultaneously — they don't fire on every move.
- The 2-minute cooldown may be suppressing repeated signals. If the coin fired the same alert type recently, it won't fire again for 2 minutes.
- Check the alert feed in the app — if alerts appear there but not in your webhook, the issue is with the webhook configuration. See Webhooks → Troubleshooting.
What is the 2-minute cooldown?
Each symbol + alert type combination has a 2-minute suppression window. After an alert fires (e.g., ETHUSDT Surge 60 Bull), the same alert type for that symbol won't fire again for 2 minutes — even if all conditions are still met. This prevents alert spam during sustained moves.
Can I customise alert thresholds?
In the app: No — thresholds are fixed at the server level. The default values are tuned to minimise noise while catching significant moves.
In TradingView: Yes — the Pine Script indicators have fully adjustable parameters (price thresholds, volume floors, etc.) that you can tune per chart.
What does "Surge" vs "Scout" mean?
- Scout fires first when momentum begins accelerating — the 5m move is unusually large relative to the 15m. It's an early signal with more false positives.
- Surge fires after the move is established across multiple timeframes. It's higher conviction but fires later in the move.
A Scout followed by a Surge on the same coin in quick succession is a strong pattern.
What is a "Raid" alert?
A Raid is a stop hunt / liquidity sweep pattern. It fires when price has moved noticeably in one direction (1h and 15m trend) but the most recent 5-minute candle reverses sharply. This is the footprint of a liquidity sweep — stops are triggered, then price reverses.
What is a "Whale" alert?
A Whale alert fires when the 5-minute volume is abnormally large compared to the recent baseline and price barely moved during that window. This combination — high volume, minimal price impact — is the footprint of large-player accumulation or distribution happening quietly.
TradingView
Do I need a paid TradingView plan?
A free TradingView account can access invite-only scripts, but you'll be limited on the number of indicators per chart. A TradingView Pro plan (or higher) gives you more indicators per chart simultaneously.
The indicator says "no access to this script". What do I do?
Your TradingView username may not be linked yet, or there's a delay in provisioning. See Getting TradingView Access.
Can I run the indicators on a 5m or 15m chart?
No — all indicators must run on a 1-minute chart. The scripts reconstruct 5m/15m/1h/8h windows internally using bar lookback. On any other timeframe the signals will be wrong.
Will I get TradingView alerts from the screener?
The screener sends alerts via the in-app feed and webhooks (Discord/Telegram). The TradingView indicators can be set up to trigger TradingView's built-in alert system separately — use the Create Alert button in TradingView and set the condition to the indicator signal.
Billing
How does the free trial work?
7 days, full access, no credit card required upfront. See Free Trial.
Can I cancel anytime?
Yes. Cancel from Account → Billing. Access continues until the end of your current billing period. No refunds for partial periods. See Manage Subscription.
Do you offer refunds?
Refunds are not offered as a general policy due to the nature of access-based subscriptions. If you have a specific issue, reach out via Discord.
What happens to my data if I cancel?
Your account, settings, and watchlist data are retained. If you re-subscribe, everything is restored. Data is not actively deleted upon cancellation.
Technical
The screener table shows no data. What's wrong?
- Check your internet connection.
- Refresh the page. The backend may have briefly restarted.
- If the issue persists for more than 2 minutes, check our Discord for any service announcements.
Prices look wrong or stale.
The screener polls every 5 seconds. During high-volatility periods Binance may be temporarily slow to respond. The timestamp on each price update is shown — if it's more than 30 seconds old, try refreshing.
Not financial advice disclaimer
Coin Sniffer is an informational tool only. Nothing on the platform constitutes financial or trading advice. All trading involves substantial risk of loss. Only trade with capital you can afford to lose.