Does the description clarify parameter syntax, constraints, interactions, or defaults beyond what the schema provides?
The input schema has 0% description coverage, with one undocumented parameter 'filename'. The description doesn't add any meaning beyond what the schema provides—it doesn't explain what 'filename' represents, its format, or where documents are located. With low schema coverage, the description fails to compensate for the lack of parameter documentation.
Input schemas describe structure but not intent. Descriptions should explain non-obvious parameter relationships and valid value ranges.