Single tool (greet) with clear naming, good description, and complete schema. Tool name 'greet' is verb-based and action-oriented, though it is a minimal proof-of-concept rather than a production-grade integration. Input schema is properly defined with Zod validation. Description is concise (66 chars) and explains the tool's purpose. Tool annotations (readOnlyHint) are correctly declared. Output structure is well-defined with both content and structuredContent fields. Major limitation: only one tool limits ability to assess composition patterns, chaining, and multi-tool interaction design. The implementation is clean and follows modern MCP patterns, but the minimal scope prevents a higher score.

• Add input validation logic to handle edge cases (empty name, special characters, length limits) and return actionable error messages that guide LLM recovery (e.g., 'Name must be 1-100 characters, alphanumeric plus spaces').
• Expand the tool set to demonstrate patterns like list_*, search_*, and create_* tools to show composition and chaining.
• Add optional parameters like 'tone' (enum: formal, casual, humorous) and 'language' (enum: en, es, fr) to demonstrate parameter constraints and descriptions.
• Document output schema in the registerAppTool invocation with explicit field descriptions, not just in code comments.
• Add batch variants or related tools (e.g., greet_multiple) to demonstrate idempotency and pagination patterns.