Three tools with significant definition gaps. Tool names lack action verbs (tapo_plug, tapo_camera, tapo_register_camera are noun-heavy; 'tapo_register_camera' is the only verb-starting name). Descriptions are present but generic and lack WHEN/WHY guidance. Input schemas visible but parameters lack individual descriptions, only operation enum and device_id have minimal docs. No output schema documented. Error handling absent. tapo_plug and tapo_camera accept free-form 'operation' strings (list, status, toggle, etc.) without enum constraints, inviting hallucinated values. Parameters like 'hours' and 'direction' lack type constraints (min/max, allowed values). Credentials (username/password in tapo_register_camera) exposed as parameters, critical security issue.

• Rename tools: tapo_plug → control_tapo_plug, tapo_camera → control_tapo_camera, tapo_register_camera → register_tapo_camera. Start with action verbs to match LLM expectations.
• Convert 'operation' parameter to enum in JSON Schema. Define allowed values (list, status, toggle, energy_history, snapshot, ptz, privacy_mode, led, stream) as enum constraint, not free-form string.
• Add per-parameter descriptions with constraints: 'hours: integer, range 1 - 720 (max 30 days of history)', 'direction: string, one of: up, down, left, right', 'enabled: boolean, true to enable, false to disable'.
• Move username and password from tool parameters to server-side configuration. Accept only device_id and host; resolve credentials from environment or secure vault inside the tool implementation.
• Document output schema for each tool. Define 'data' field structure: tapo_plug returns {power_on: bool, energy_mah: int, ...}; tapo_camera returns {status: string, resolution: string, ...}. Include field types and descriptions.