A technical indicator is a calculation on price, volume, or open interest, drawn over the chart or in a panel of its own. Pick one from the built-in library or the marketplace, tune it without touching code, or write your own in Indie®.
Pick a source
Built-in library
Marketplace
Your own
Add an indicator to a chart
An indicator lands on the active chart, so start by picking the chart.- Step 1 of 4Pick the chart
With several charts in the workspace, click the one you want so it is highlighted.
- Step 2 of 4Open the f icon
The f icon in the chart’s top control panel opens both the built-in library and the marketplace.
- Step 3 of 4Apply one
Pick an indicator and it is applied to the active chart, over the price or in a panel below it.
- Step 4 of 4Tune it
Click the gear next to its name above the chart. For oscillators, the gear sits below the chart area.
Configure what you added
Every applied indicator has a gear icon next to its name above the chart; for oscillators the same icon sits below the chart area. Its settings panel has two sections:Use an indicator from the marketplace
All published indicators live in the Indicator Marketplace, where you can filter by Free and Paid. Free and already purchased indicators have an Add to Chart button, so you can apply one without leaving the marketplace page. If you would rather have an LLM pick for you, the MCP server can search the marketplace from your AI client.Alert on an indicator
Any indicator on the chart can be the source of an alert: a line crossing a level, a value moving by a percentage, or two lines crossing each other. That includes your own scripts, as soon as they are saved to My scripts. See Alerts for the conditions and where notifications go.Build your own
When nothing in the library fits, write the indicator yourself in Indie®, the platform’s own language, close to Python.Indicator code editor
Indie® language
Write with AI
Test a strategy
Indicators that place orders are strategies. Run them against history in the Strategy tester to see how the logic behaved on past data. A backtest is not a forecast of live results.Publish and earn
Finished indicators can be published to the marketplace: free, to grow an audience, or paid. See Sell your indicators for the revenue split and the publishing flow.Good to know
- An indicator lands on the active chart. Click the chart you want first when the workspace has several.
- Settings don’t change the code. Inputs and outputs tune the indicator on the chart; to change its logic, fork or edit the script in the IDE.
- Built-in scripts are open. Read the source of any built-in indicator to see how it is calculated, or start your own from it.
- Alerts don’t need a published script. A private script saved to My scripts can already trigger alerts.