concept

Overview

Most Code-tab APIs work the same whether you are writing an indicator or a definition — reading price, declaring settings, drawing on the chart, pulling in other indicators, multi-timeframe reads, sessions, budgets, and lint.

Start here for those common pieces. Open the Indicator, Definition, or Study sections only for what each type adds on top (series types, emits/Collect, or event measurement).

Pages in this section

Page	Indicator	Definition	Study
Price and bar data	yes	yes	candles helpers
Remembering values across bars	yes	yes	—
Settings inputs and dialog	full	subset	—
Declaring indicator dependencies	yes	yes	yes
Dependency outputs	yes	yes	yes
Drawing on the chart	yes	yes	annotation helpers
Multi-timeframe and runOn	yes	yes	runOn only
Sessions	yes	yes	yes
Budgets and limits	yes	yes	yes
Lint and error codes	yes	yes	yes

Documented under each script type

Topic	Page
Overlay/pane meta, series outputs (`histogram`, `bandTemplate`, …)	Indicator API
`events.declare`, `ctx.emit`, imports, multi-file ESM	Definition API
`onEvent` / `onFinish`, collect, publish, pins on chart	Study API · Show studies on charts

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