Server has 9 tools with clear verb-noun naming and present descriptions. All tools have input schemas with type definitions. However, parameter descriptions are sparse or missing entirely (e.g., 'arguments' in run_tenable_mcp_tool_for_child lacks guidance on expected structure). Output schemas are not documented. Error handling is absent from visible code, no recovery guidance, categorization, or actionable error messages. Tool descriptions are adequate (50-150 chars) but lack dependency hints and prerequisites. No tool annotations (readOnlyHint/destructiveHint) despite clear risk levels. Composition is sound, tools chain logically (list → discover → run → query). Security: no visible credential exposure, but no audit logging or permission gates in source.

• Add detailed parameter descriptions for 'arguments' (expected object structure, required vs optional fields) and 'recipe' (array of step objects with tool_name, arguments, etc.). Include examples of valid recipe format.
• Document output schemas for all tools. For list_* tools, specify returned fields (e.g., child_account_uuid, license_type, licensed_apps). For run_* tools, specify success/failure structure and per-step results.
• Implement error handling with recovery guidance. Return structured errors: {error_code, message, recovery_hint, available_alternatives}. E.g., 'Invalid child_container_uuid. Available UUIDs: [...]'.
• Add tool annotations via FastMCP: @mcp.tool(..., readOnlyHint=True) for list_* and get_* tools; destructiveHint=True for run_* and bulk_vm_cve_query. This signals agent risk assessment.
• Add pagination to list_mssp_child_accounts and list_available_tenable_mcp_tools. Accept limit (default 20, max 100) and offset/cursor parameters. Return total_count and next_cursor in response.

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

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