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• Add documented output schemas for all 20 tools. Specify the exact fields agents will receive. For example, list_files should document: {files: [{id, name, mimeType, createdTime, modifiedTime}], nextPageToken?, totalCount?}.
• Expand parameter descriptions to include constraints. For pageSize, add '(1-1000, default 10)'. For exportMimeType, list valid values: 'application/pdf, application/vnd.openxmlformats-officedocument.wordprocessingml.document, etc.'
• Add error handling guidance to all tool descriptions. Example for delete_file: 'Returns error if file not found or user lacks permission. No confirmation step, deletion is immediate and irreversible.'
• For destructive operations (delete_file, write_sheet), document idempotency. Clarify: 'Repeated calls with the same fileId will fail after the first deletion' or 'Safe to retry if the operation partially succeeded.'
• Add validation rules and format hints to path parameters. Document: 'localPath must be an absolute or relative path to a writable directory. The tool will validate paths and reject attempts to write outside the configured root.'
• Consider adding confirmation-step variants or dry-run support for high-risk operations. E.g., offer a preview_delete_file tool that shows what will be deleted before calling delete_file.
• Add dependency hints in parameter descriptions. For parentFolderId, note: 'If unknown, call list_files() first to discover folder IDs.'
• Include pagination examples in list_files and search_files descriptions. Guide agents on when to use cursor (incremental browsing) vs pageSize (limiting initial result size).