Server has 9 tools with basic schemas and descriptions, but quality is inconsistent. All tools have descriptions (10-50 chars, mostly short), and input schemas are present with typed parameters. However, descriptions lack actionable context for LLM selection, they state WHAT but not WHEN or WHY. Parameter descriptions are minimal (e.g., 'Google Sheet ID' with no format guidance). Output schemas are undocumented. Error handling is absent from tool definitions. Naming is clear (verb_noun pattern) but some tools conflate concerns (append_rows vs insert_rows). No tool annotations (readOnlyHint/destructiveHint) despite clear risk levels. Missing pagination guidance for list_files despite page_size/page_token params.

• Expand tool descriptions to 100-200 chars. For read_range: 'Read data from a specific range in a Google Sheet using A1 notation (e.g., Sheet1!A1:B10). Use this when you need a subset of data; use get_values for multiple ranges in one call.'
• Document output schemas for all tools. E.g., list_files returns {files: [{id, name, mimeType}], nextPageToken?}. Include this in tool description or a separate schema field.
• Add tool annotations: mark delete_sheet with destructiveHint=true, create_sheet with idempotentHint=true, all read tools with readOnlyHint=true.
• Clarify parameter formats: 'file_id: Google Sheet ID (44-char alphanumeric string, e.g., 1BxiMVs0XRA5nFMKUVfIKWHOne0S55IBLLn1shaEQqTA)' and 'range: A1 notation range (e.g., Sheet1!A1:B10, Sheet1, or A:B for entire columns)'.
• Merge append_rows and insert_rows into a single tool with an insert_data_option parameter (OVERWRITE|INSERT_ROWS), or clearly document: 'append_rows adds to the end; insert_rows shifts existing data down. Use append_rows for new data, insert_rows to inject at a position.'

Inferred effective spec: <=2025-11-25.

• Relies on Logging (deprecated) - log to stderr or use OpenTelemetry