Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
With 0% schema description coverage and 7 parameters (only one required), the description provides zero information about parameter meanings. It doesn't explain what 'conn_type' represents, what the various connection parameters (host, port, login, password, schema, extra) are for, or how they relate to testing connections. The description fails completely to compensate for the schema's lack of documentation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.