Single tool with adequate naming and schema, but critical gaps in parameter descriptions and output documentation. The tool 'list_grafana_instances' follows verb_noun convention and has a clear purpose. Input schema is present with proper types. However, parameter descriptions are minimal (check_health has 113 chars, acceptable but sparse), and critically, there is NO documented output schema visible in the source. The tool description (127 chars) is adequate but lacks guidance on when to call it or what structure it returns. No error handling guidance. The server exposes only one tool, limiting composition patterns. Tool annotations (readOnlyHint) are present, which is positive for protocol readiness but does not compensate for missing output documentation.

• Document the output schema for list_grafana_instances. Specify fields (name, url, description, is_live, etc.), types, and whether results are paginated. Example: {"instances": [{"name": "string", "url": "string", "description": "string", "is_live": "boolean"}]}
• Expand tool description to explain the routing pattern: 'Returns a list of Grafana instances. Use the instance name (e.g., "prod-grafana") as the required instance parameter in any downstream tool call to route that operation to the correct Grafana server.'
• Add guidance to check_health parameter: 'If true, contact each instance to verify connectivity (adds ~500ms per instance). Use false for fast discovery when you only need names and URLs.'
• Include error handling in description: 'If an instance is unreachable or misconfigured, is_live will be false. Check the description field for configuration hints. If all instances are down, ask the user to verify network and credentials.'
• Document pagination if applicable: 'If many instances are configured, specify whether results are paginated and what limit/offset parameters apply.'

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

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