What Is a Trading Signal?
A trading strategy can contain a long list of rules. A computer can evaluate those rules and eventually decide that the conditions for a trade have been met.
But how does that decision get communicated to the next part of the system?
That is where a trading signal comes in.
A trading signal is information that communicates a trading decision, such as BUY, SELL, or EXIT, along with the information needed to identify what that decision relates to.
A Trading Signal Is More Than “BUY”
Imagine an algorithm has checked all of its conditions and decided that it wants to enter a trade.
The most basic description might simply be:
BUYBut another system receiving that message would need more context.
For example, a signal could contain information such as:
- Action: BUY, SELL, or EXIT
- Trading pair: such as BTCUSDT
- Signal ID: an identifier that helps distinguish one signal from another
- Timestamp: when the signal was generated
- Other strategy information: depending on how the system is designed
Not every trading signal contains exactly the same fields. The information depends on the strategy and the system receiving the signal.
A Simple Example
Suppose a strategy has determined that its entry conditions are satisfied.
The decision might be represented conceptually like this:
Action: BUY
Pair: BTCUSDT
Signal ID: 12345
Time: 10:30 UTCThis is much more useful than simply sending the word “BUY”. The receiving system can understand what action was requested, which market it relates to, and when and which signal generated it.
The exact format can vary. In automated trading, signals are often represented as structured data so that software can reliably read each piece of information.
Where Does a Trading Signal Come From?
There is no single source for trading signals.
A signal can be produced by:
- A TradingView strategy
- A Pine Script strategy
- A Python-based trading algorithm
- A custom trading system
- Another trading platform or software application
The technology can be different, but the basic purpose remains similar: the strategy reaches a decision and communicates that decision to another part of the trading system.
This distinction becomes particularly important when moving from manual trading to algorithmic trading or automated trading.
Rule, Decision, Signal, Order: What Is the Difference?
These terms can sound interchangeable when you are first learning about automated trading, but they describe different stages.
Rule → Defines what the strategy is looking for.
Decision → The computer determines that the required conditions are satisfied.
Signal → Communicates that trading decision.
Order → An instruction sent to an exchange to buy or sell.
For example, a strategy might have a rule that requires several conditions to be true.
When those conditions become true, the computer makes a decision. That decision can produce a BUY signal.
But the BUY signal itself is not necessarily an exchange order.
This small distinction becomes very important once trading starts becoming automated.
TradingView Can Generate Trading Signals
TradingView is one of the places where traders can turn strategy rules into executable logic using Pine Script, TradingView's scripting language.
For example, a strategy might evaluate conditions such as:
Condition 1 = TRUE
Condition 2 = TRUE
Condition 3 = TRUE
↓
Strategy decision = BUY
↓
Trading signal generatedTradingView alerts can then communicate when a defined event occurs.
This is one reason TradingView strategies can be useful to people who want to explore algorithmic trading without building an entire trading system from scratch.
For readers who want to explore Pine Script examples, TurboBridge also provides a free Pine Scripts Library that can be used as a practical starting point for studying ready-made scripts.
How Signals Can Become Part of Automated Trading
Once a trading signal exists, it can be passed to another service that knows what to do with it.
One common method is a webhook. A webhook allows one system to send information to another system automatically over the internet when a particular event occurs.
With TurboBridge, a TradingView signal can be sent through a webhook and connected to supported exchange execution. This allows the signal generated by a TradingView strategy to become part of an automated trading workflow without requiring the trader to build the complete connection between TradingView and the exchange themselves.
You can find the broader explanation of how the TurboBridge application connects these parts on the TurboBridge How It Works page.
What Makes a Trading Signal Useful?
A useful signal needs to be clear enough for the receiving system to understand what the strategy has decided.
That generally means avoiding ambiguity about things such as:
- What action is being requested?
- Which trading pair does it concern?
- Which signal generated it?
- When was it generated?
These details become increasingly important when signals are being processed automatically, especially when many signals can be generated over time.
The important idea is simple: a trading signal is the message that carries a strategy's decision forward.