Server has well-structured tool definitions with explicit schemas and descriptions. All 6 tools are properly registered with [McpServerTool] attributes and parameter descriptions via [Description]. Naming follows verb_noun convention (RunTests, GetCoverage, GetUncovered, GetFile, GetDiff, InsertTest). However, descriptions vary in quality, some are detailed (RunTestsWithCoverage: 180 chars), others are terse (GetCoverageSummary: 140 chars). Parameter schemas are complete with types and descriptions, but output schemas are not formally documented in the code. Error handling returns structured JSON errors with actionable messages (e.g., 'pathNotAllowed', 'buildError', 'timeout'). No tool annotations (readOnlyHint/destructiveHint) are visible, and no pagination support despite tools that could return large result sets.

• Add formal output schema documentation for each tool. E.g., GetCoverageSummary should document: 'Returns JSON object with classes array, each containing {name, lineCoverage, branchCoverage, methods: [{name, lineCoverage, branchCoverage}]}'.
• Add tool annotations: mark RunTestsWithCoverage and InsertTestCode with destructiveHint=true; mark read-only tools (GetCoverage*) with readOnlyHint=true.
• Remove example values from parameter descriptions. Replace 'e.g. OrderServiceTests' with a constraint: 'Class or method name (alphanumeric, no spaces)'.
• Add limit/offset pagination to GetCoverageSummary and GetUncoveredBranches. Document max result size (e.g., 'Returns at most 100 classes; use topN to limit further').
• Standardize error responses: always return structured JSON with {code, message, recoveryHint} instead of mixing JSON and plain text.