Atmos YAML Functions

Overview

YAML functions are the recommended way to add dynamic behavior to Atmos stack configurations. They use YAML explicit tags (the ! prefix) and operate on structured data after YAML parsing. They cannot break YAML syntax, are type-safe, and produce clear error messages.

All YAML functions support Go template expressions in their arguments. Atmos processes templates first, then executes the YAML functions.

Available YAML Functions