github-slug-action/docs/reference/inputs.md

Inputs Reference

The GitHub Slug Action accepts the following inputs in the with: block.

Input	Required	Default	Description
prefix	No	""	Value prepended to each generated variable name. For example, prefix: CI_ produces CI_GITHUB_REPOSITORY_SLUG instead of GITHUB_REPOSITORY_SLUG.
slug-maxlength	Yes	63	Maximum length of slugified values. Accepts a number or "nolimit" to disable truncation. Must not be empty.
short-length	No	(Git default)	Length of shortened SHA values. Minimum 4. When empty, Git determines the length based on your repository size using git rev-parse.

Notes

• When short-length is left empty, the action uses the effective value of the core.abbrev Git configuration variable. This requires your repository to be checked out first (via actions/checkout).
• The slug-maxlength default of 63 matches the DNS label length limit, which is also the maximum length for Kubernetes labels.

See also

• How to use a prefix
• How to configure slug max length
• How to configure short length