Server has 7 tools with basic schemas and descriptions, but significant quality gaps. Descriptions are present but often generic or overly technical (Chinese-language docs). Parameter schemas lack proper type constraints and enums. No output schemas documented. Error handling is minimal. Tool naming follows verb_noun pattern but lacks clarity on mutual exclusivity and dependencies. No evidence of idempotency, pagination, or recovery guidance. Composition is reasonable (separate CRUD operations on cron jobs) but missing critical patterns like confirmation for destructive ops.

• Document output schemas for all tools. E.g., add_cron should return {job_id: string, created_at: ISO8601, next_run: ISO8601}. This enables agents to chain calls and extract IDs for follow-up operations.
• Convert free-form string parameters to enums. Define tag as enum ["task", "reminder"], channel_type as enum ["discord", "weixin"]. Add regex pattern for cron_expr validation in description: 'Format: min hour day month dow (e.g., "0 9 * * *" = 9 AM daily)'.
• Add confirmation step for delete_cron. Implement a dry-run or require explicit confirmation parameter. Return clear error if job_id not found, with available job IDs as alternatives.
• Expand descriptions to 100-200 chars with WHEN/WHY guidance. E.g., 'Creates a scheduled task that sends a message to a Discord user or channel at specified times. Use this to set up recurring reminders or automated reports. Returns job_id for later updates.'
• Document parameter relationships explicitly. E.g., 'Either user_id (for DMs) or channel_id (for channels) is required, not both. If both provided, channel_id takes precedence.' Add similar guidance for username vs user_id.

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

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