Scripts

Serverless Stack

A script in Painless is a complete program composed of one or more statements that performs a specific task within Elasticsearch. Scripts run within a controlled sandbox environment that determines which variables are available and which APIs can be accessed based on the use context.

Scripts are the fundamental runnable unit in Painless, allowing you to customize⁣ Elasticsearch behavior for search scoring, data transformation, field calculations, and operational tasks. Each script runs in isolation with access to context-specific variables and a curated set of safe operations.

For detailed guidance on writing scripts, practical examples, and step-by-step tutorials, refer to How to write Painless scripts.