14 tools with mixed quality. Naming is verb-forward and clear (read_, write_, browse_, call_, subscribe_, etc.), following pattern:tool conventions. Descriptions are present but brief (avg ~60 chars, well below the 194-char baseline). Input schemas are visible and typed, but parameter descriptions are sparse or missing entirely. Output schemas are not documented. Error handling and recovery guidance are absent. No tool annotations (readOnlyHint/destructiveHint). Composition is reasonable, tools are single-purpose and chainable, but parameter interdependencies are underdocumented.

• Document output schemas for all 14 tools. Specify field names, types, and structure. E.g., read_opcua_nodes should return {nodes: [{node_id: string, value: any, timestamp: string, status: string}], total: number}.
• Add enum constraints to parameters with fixed options. E.g., aggregate_function should list valid values: Average, Total, Maximum, Minimum, Count, etc. Replace examples with formal enums in the schema.
• Add tool annotations: mark write_opcua_nodes, call_opcua_method, acknowledge_alarm, act_on_alarm with destructiveHint=true. Mark all read tools with readOnlyHint=true. Mark idempotent operations (e.g., read_opcua_nodes) with idempotentHint=true.
• Expand parameter descriptions to 50 - 100 chars each. Include format hints, constraints, and dependencies. E.g., 'node_id: OPC UA node identifier (format: ns=2;i=5 or nsu=http://example.com;i=Temperature). Required.'
• Add error handling guidance to tool descriptions. E.g., 'If a node is not found, returns error code 404 with available node names. Retry with browse_opcua_nodes to discover valid nodes.'