Single tool with adequate schema and parameter descriptions, but lacks critical production-grade patterns. Tool name is clear (get_type_definition_at_position), and input schema is properly defined with Zod validation. However, output schema is not documented, the response structure is inferred from code but not formally declared. Error handling is minimal (throws generic errors without recovery guidance). No tool annotations (readOnlyHint, idempotentHint). Description is 108 chars, within acceptable range but could be more actionable. Parameters have descriptions but lack format constraints (e.g., line/column must be positive integers). No pagination, batching, or composition patterns evident.

• Document the complete output schema in tool registration. Define fields: typeInfo (string), symbolDetails (object with name, escapedName, fullName, flags array), typeDetails (object), and content (array of text objects). Include field descriptions and types.
• Add constraint descriptions to numeric parameters: 'line: 1-based positive integer (1 to file line count)' and 'column: 0-based non-negative integer (0 to line length)'.
• Enhance error messages with recovery guidance. E.g., 'tsconfig.json not found in parent directories of {filePath}. Ensure a tsconfig.json exists in the project root.' and 'No symbol found at line {line}, column {column}. Verify the position points to a valid identifier.'
• Add readOnlyHint annotation to tool definition to signal that this tool does not modify files and is safe to call repeatedly.
• Expand tool description to 150-200 chars explaining use case: 'Retrieve the TypeScript type definition and symbol information for a code location. Returns the inferred type string, symbol metadata, and detailed type structure. Essential for code analysis, refactoring, and understanding type inference.'