Four tools with clear security audit focus, but significant gaps in schema completeness and parameter documentation. All tools have descriptions (10-100 chars, baseline 194), but most parameters lack type definitions in visible schemas. Tool names follow verb_noun pattern (audit_*) appropriately. No input validation guidance or error recovery hints. Schemas are minimal, most show empty {} or single optional string params without full JSON Schema structure. Output types are defined in TypeScript interfaces (AdminRoleAuditResult, etc.) but not exposed in tool registration. STDIO transport caps overall potential.

• Expand input schemas to full JSON Schema with type, description, and constraints for all parameters. E.g., user_filter: {type: 'string', description: 'Email substring (e.g., [email protected] or john). Case-insensitive.', minLength: 1, maxLength: 255}.
• Document output schemas in tool definitions. Add a 'result' field to each tool registration showing the structure of AdminRoleAuditResult, OAuthGrantAuditResult, etc., with field descriptions.
• Add error handling guidance to tool descriptions. E.g., 'Requires GOOGLE_CLIENT_ID, GOOGLE_CLIENT_SECRET, GOOGLE_REFRESH_TOKEN environment variables. Returns error if credentials are missing or API calls fail.'
• Expose pagination and result limits. Add limit and offset parameters to audit_oauth_grants; document the 25-user default in the description and explain how to retrieve additional results.
• Add parameter format hints. E.g., ou_filter in audit_user_hygiene: 'Org unit path (e.g., /Engineering or /Sales). Partial matches supported.' This helps LLMs construct valid queries.