Single placeholder tool with basic structure. Tool has a description (good), but it is generic and template-oriented rather than production-ready. Input schema is present with type and description for the 'name' parameter. Output is documented in code but not in formal schema. The tool is intentionally a scaffold, not a real implementation, which limits assessment. Naming is clear (hello_world), but the description reads as boilerplate ('A placeholder tool. Replace this with your domain logic.') rather than actionable guidance. No error handling, no pagination, no complex composition patterns to evaluate. Tool annotations are present (readOnlyHint, destructiveHint, idempotentHint), which is a positive signal for current spec alignment.

• Replace generic description with production-ready text: 'Sends a personalized greeting. Use this to test the MCP server integration. Returns a greeting message and metadata. Idempotent and read-only.'
• Document the output schema formally: {type: 'object', properties: {type: {type: 'string'}, text: {type: 'string'}, structuredContent: {type: 'object', properties: {greeting: {type: 'string'}, scaffold_version: {type: 'string'}}}}}
• Add error handling: document that Actor.charge() may fail if PPE event is not defined, and provide recovery guidance ('Ensure pay_per_event.json includes the event name').
• If this remains a scaffold, add a note in the description: 'This is a template tool. Replace with your domain logic in src/server.py. See get_server() for the contract.'
• Consider adding a second tool (e.g., 'get_server_status') to demonstrate multi-tool composition and pagination patterns for real implementations.

Inferred effective spec: 2025-06-18+.

• Relies on Roots (deprecated) - pass files/dirs via tool parameters, resource URIs, or configuration