Server has 7 tools with basic schemas and descriptions, but significant gaps limit production readiness. Tool naming is mostly clear (get_*, search_*, send_*, create_*), but descriptions are generic and lack LLM-optimization guidance. Parameter descriptions exist but are minimal (10-30 chars). Critical issues: no output schemas documented, no error handling guidance, no pagination support despite max_results params, and duplicate/overlapping tools (get_latest_emails vs get_recent_emails both do the same thing). Security concern: credentials handled via file I/O rather than environment injection. No tool annotations (readOnlyHint, destructiveHint). Schemas present but sparse, missing constraints, enums, and validation rules.

• Consolidate get_latest_emails and get_recent_emails into a single get_emails tool with optional time_min/time_max filters. Reduces LLM confusion and simplifies composition.
• Document output schemas for all tools. Example: 'Returns {emails: [{id, from, subject, date, snippet}], total_count, next_cursor}'. Include this in tool description or as a separate schema field.
• Add error recovery hints to descriptions. E.g., send_email: 'If auth fails, ensure credentials.json exists and token.json is valid. Call auth_status resource first to diagnose.'
• Implement pagination: add offset/limit or cursor parameters; return total_count and next_cursor in responses. Cap results at 20-50 items per call to prevent context window exhaustion.
• Add tool annotations: mark send_email and create_calendar_event with destructiveHint=true; mark all get_* tools with readOnlyHint=true. Enables agents to reason about side effects.

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

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