Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema documents all three parameters at 100% coverage, so the baseline is 3. The description adds concrete allowed values for market (USA, EU, Switzerland, Asia, Middle East) and archetype (solo, scale-up, enterprise), and explains how the optional parameters narrow the playbook, going beyond the schema's brief property descriptions.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.