Pine Script
Also known as: TradingView Pine, Pine
What is it?
Pine Script is the built-in programming language of TradingView, the widely used web-based charting site. It lets you write your own custom indicators and trading strategies directly on the chart, rather than being limited to the tools TradingView ships by default. Think of it as a way to teach the chart your own rules, for example: highlight when a fast moving average crosses a slow one, or fire an alert when price closes above a level. Pine Script is popular because it is far more approachable than heavier languages like MetaTrader's MQL, so it has become the most beginner-friendly way to turn a chart idea into a precise, rule-based trigger.
Here is the crucial point for automation: Pine Script does not place trades on your broker by itself. What it does is generate alerts, which are notifications that fire the moment your conditions are met. Those alerts can then be sent onward, usually through a webhook (a message posted automatically to a web address), to a connector that actually executes the trade. So Pine Script is the brain that decides when to act, while a separate piece handles the doing.
One thing every beginner should know is repainting, where a script appears to change its past signals after the fact, making a backtest look better than live results. Using bar-close confirmation, which means waiting until a candle fully finishes before triggering, avoids most of these surprises and keeps your live alerts honest.
Why it matters: It is the most accessible way to turn a chart idea into a rule-based alert that can then drive automation via webhooks.
Pine logic defines the signal; a repainting script can make live results diverge sharply from the backtest.
Real-world example
A Pine strategy fires an alert when its conditions hit, which a webhook forwards to a connector to place the trade.
How SignalBots handles it
SignalBots ingests alerts from Pine Script strategies via webhook, turning TradingView ideas into automated execution.
Pro tip
Use bar-close confirmation in your Pine alerts unless you specifically want intrabar triggers, to avoid repainting surprises.
Common pitfalls
Building a Pine strategy that repaints, so live alerts differ from the backtest that looked so good.
Frequently asked questions
Can Pine Script place trades on my broker by itself?
No. Pine Script only generates alerts on TradingView. To turn those alerts into live orders, a webhook sends them to a connector like SignalBots, which does the actual trade placement.
Is Pine Script hard to learn for a beginner?
It is one of the more approachable scripting languages and is well documented. You can start by editing existing community scripts before writing your own conditions from scratch.
What is repainting and why should I care?
Repainting is when a script appears to change its past signals after the fact, making a backtest look better than reality. Using bar-close confirmation in your alerts avoids most repainting surprises.
Do I need a paid TradingView plan to use alerts and webhooks?
Webhook-based alerts that drive automation are typically on TradingView's paid tiers. Check your plan, since the free tier limits how many alerts and webhook messages you can use.
How do Pine alerts reach SignalBots?
Your TradingView alert posts its message to a SignalBots webhook address when it fires. SignalBots then routes that message to your connected execution surface to place the matching trade.