This server has 10 tools with mixed quality. Naming is generally action-verb based and clear (createCalendarEvent, listCalendarEvents, writeGoogleDoc, etc.), which is good. However, descriptions are brief but adequate for most tools (averaging ~70-100 chars). Input schemas ARE present and properly typed with JSON Schema, which is a significant strength. Critical gaps: (1) No output schemas are documented, callers cannot predict what fields to expect from tool responses, forcing LLMs to guess at downstream chaining. (2) No error handling guidance, tools lack recovery hints, retryability classification, or actionable error messages. (3) No tool annotations (readOnlyHint, destructiveHint, idempotentHint), the protocol cannot automatically enforce safety policies. (4) Parameter descriptions are minimal; several lack context on valid ranges or formats (e.g., reminderMinutes has no bounds, topK defaults to 5 with no range, days can be 1-7 but the constraint is stated as a separate note, not in schema). (5) Security concern: no evidence of server-side credential injection, calendar, docs, and weather tools almost certainly need API keys. (6) The vector query tool (vectorQuery) lacks detail on the backend indexing strategy. Overall, this is a workable but incomplete toolkit.

• Document output schemas for all 10 tools. Example for createCalendarEvent: {eventId: string, title: string, startDateTime: string, endDateTime: string, reminderMinutes: number, createdAt: string}.
• Add readOnlyHint and destructiveHint annotations to tool definitions. Mark createCalendarEvent, writeGoogleDoc, createGoogleDoc, generateMindMap, podcastTool as destructive (writeHint=true). Mark list/search/get tools as readOnlyHint=true.
• Specify numeric bounds in schema for all numeric parameters: reminderMinutes (0-1440), topK (1-100), maxResults (1-50), days (1-7). Use JSON Schema minimum/maximum fields.
• Enhance error handling by returning structured error responses with recovery guidance. Example: {error: 'Invalid calendar date', reason: 'startDateTime must be ISO 8601 and in the future', suggestion: 'Verify the date format and ensure the event is not in the past'}.
• Rename podcastTool to generatePodcast to follow verb_noun naming convention.
• Add parameter descriptions for all numeric parameters explaining their purpose and impact. Example for topK: 'Number of most relevant documents to return (1-100, default 5). Higher values cost more tokens but find more context.'.
• Verify credentials are injected server-side via environment variables or vault, NOT exposed as tool parameters. Document the authentication flow in server setup docs.
• For vectorQuery, document the indexing backend (e.g., Pinecone, Weaviate, in-memory) and how documents are uploaded/synchronized.
• Add pagination support to listCalendarEvents and searchStackOverflow. Include cursor or offset, limit, and totalCount in responses to handle large result sets.

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

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