Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
Schema description coverage is 0%, so the description carries the burden; it at least identifies the parameter as a slug, tying it to the identifier used by the other adventure tools. It does not reveal the expected format (lowercase alphanumerics with hyphens per the pattern) or how to obtain a slug, leaving the schema's regex as the only format guidance.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.