bad-invocable-skill

To validate the boolean invocability flag in SKILL.md frontmatter, check that the metadata includes a valid name and description while flagging any non-boolean or ambiguous invocable values.

When frontmatter contains a non-boolean or ambiguous invocable value in skill fixtures, the validation fails and flags the issue, ensuring only proper boolean values are accepted for invocability.

To check that required metadata like name and description exists in SKILL.md, validate the frontmatter to confirm the presence of these essential fields before processing the invocability flag.

Yes, you can use frontmatter validation for skill fixtures in QA pipelines to verify skill definitions, detect misformatted invocability, and ensure required metadata exists before activating them in larger automation systems.

Skill metadata validation fails on ambiguous invocable indicators because the invocability flag must be a proper boolean value; any non-boolean representation triggers a failure to prevent misformatted metadata.