Two tools with basic schemas and Japanese descriptions. Both tools have input schemas with properties and required fields, but descriptions are minimal (under 100 chars) and lack context on when/why to use them. Parameters lack detailed constraints or format guidance. No output schema documentation. Error handling is minimal, tools return success messages but don't guide recovery on failure. notify_discord lacks webhook URL validation guidance. No tool annotations (destructiveHint, idempotentHint). Naming is acceptable (verb_noun pattern) but descriptions don't explain prerequisites, side effects, or dependencies.

• Expand tool descriptions to 100-200 chars. Example for notify_os: 'Send a desktop notification to the OS. Use this for local alerts; use notify_discord for team notifications. Requires OS notification support. Returns success/failure status.'
• Add output schema documentation. Specify that both tools return {success: boolean, message: string, timestamp: ISO8601} so LLMs know what to expect.
• Add parameter constraints in descriptions. Example: 'title (string, max 100 chars, optional): notification title. Defaults to configured default_title if omitted.'
• Implement actionable error messages. When webhook URL is missing, return: 'Discord webhook not configured. Set discord.webhook_url in config file (see README for setup instructions).'
• Add tool annotations. Mark both tools with destructiveHint=true since they have side effects (send notifications). Mark as idempotentHint=false if repeated calls with same args produce duplicate notifications.