Server has 3 tools with basic registration but significant quality gaps. All tools have descriptions (good), but 2 of 3 lack proper parameter type constraints and descriptions are thin. Parameter validation is weak, enum constraints exist for only 2 tools. Error handling is minimal (raw error codes, no recovery guidance). Output schemas are not documented. Tool names are reasonably clear (domain_base_info_lookup, lazycat_power, lazycat_device_query) but descriptions are bilingual clutter. No discussion of idempotency, destructive operations lack confirmation patterns, and no output schema documentation. This is below the 70-79 'good' threshold due to incomplete parameter descriptions and missing error recovery guidance.

• Rewrite descriptions in English only (remove Chinese translations). Each description must be 100-200 chars and answer: (1) What does the tool do? (2) When should the LLM call it instead of a similar tool? (3) What does it return? Example for domain_base_info_lookup: 'Queries DNS records (A, MX, NS), WHOIS data, and SSL certificates for a domain. Use this to discover infrastructure and ownership info. Returns nameservers, IP addresses, MX records, WHOIS text, and certificate details.'
• Document output schemas as JSON Schema. For domain_base_info_lookup, add: 'Returns object: {dns_nameservers: [string], ip_addresses: [string], mx_records: [{exchange: string, preference: number}], whois_info: string, certificates: [{subject: string, issuer: string, valid_from: ISO8601, valid_to: ISO8601}]}.' For lazycat_device_query, document EndDevice structure.
• Add format constraints to parameters. Domain parameter: 'A fully qualified domain name (FQDN) like example.com or subdomain.example.com. Do not include http/https scheme.'
• Implement confirmation pattern for lazycat_power destructive operations. Add a 'confirm' parameter (boolean, default false) or return a 'requires_confirmation: true' response requiring a follow-up call with 'confirmation_token'. Or split into separate tools: lazycat_query_power_status (read-only), lazycat_power_reboot (with confirmation), lazycat_power_shutdown (with confirmation).
• Enhance error messages with recovery guidance. Example: If domain lookup fails, return 'Domain lookup failed: NXDOMAIN. Verify domain spelling and try again, or use search_dns to find similar domains.' If device query fails, return 'No devices found for user. Ensure user account is active by calling lazycat_device_query with status_kind=all-device, or check permissions.'