RoslynLens Documentation

A token-efficient MCP server for .NET codebase navigation via Roslyn. 34 tools, 18 anti-pattern detectors, configurable and extensible.

Getting Started

• Quick Start — up and running in 2 minutes
• Installation — NuGet, source build, updates
• Configuration — MCP registration, solution discovery
• Configuration Reference — all environment variables, CLI args, tuning guide
• Troubleshooting — common issues and fixes

Tools Reference (34 tools)

Core tools (17)

• Navigation Tools — find_symbol (with glob patterns), find_references, find_implementations, find_callers, find_overrides
• Inspection Tools — get_public_api, get_symbol_detail, get_type_hierarchy, get_dependency_graph
• Project Tools — get_project_graph, get_diagnostics, get_test_coverage_map
• Analysis Tools — detect_antipatterns, detect_circular_dependencies, find_dead_code
• Modular Architecture Tools — get_module_depends_on, validate_conventions

v1.1.0 tools (11)

• Advanced Analysis Tools — get_complexity_metrics, analyze_data_flow, analyze_control_flow, detect_duplicates, resolve_external_source
• Compound Tools — analyze_method, get_type_overview, get_file_overview
• Batch Tools — find_symbols_batch, get_public_api_batch, get_symbol_detail_batch

v1.2.0 tools (2)

• Solution Management Tools — list_solutions, switch_solution

v1.3.0 tools (4)

• Graph Intelligence Tools — get_communities, find_god_nodes, find_surprising_dependencies, find_isolated_symbols

Anti-Pattern Detectors (18)

• General .NET Detectors — AP001-AP009 (async, error handling, resource management, observability)
• Domain-Specific Detectors — GR-GUID, GR-SECRET, GR-DTO, and 6 more

Architecture

• How It Works — startup sequence, workspace management, tool execution flow
• Adding a Tool — step-by-step guide with templates
• Adding a Detector — step-by-step guide with test templates

Other

• Comparison with Alternatives — feature matrix vs SharpLensMcp, RoslynMCP, SharpToolsMCP, CodeAnalysisMCP