APIActive

GitHub Actions Expressions

Built-in expression syntax for evaluating conditions and values in GitHub Actions workflows.

Field note

What it does

Expression evaluation engine supporting literals, operators, and functions like contains, startsWith, format, join, toJSON, fromJSON, hashFiles, and status checks.

Capabilities

Available capabilities

String functions Expression evaluation JSON functions Conditional Logic Status check functions

GitHub Actions Expressions

What it does

Available capabilities

Tags

Ways to use it

Product features

cache action usage

Cache hits and misses

Cache key matching

Dependency caching reference

Example of search priority

Example using multiple restore keys

Example using the cache action

In this article

Input parameters for the cache action

Output parameters for the cache action

Using contexts to create cache keys

Using the output of the cache action