swiftlens

Overview

SwiftLens is a specialized MCP server designed specifically for iOS/Swift development. It bridges AI agents and Swift codebases by providing semantic-level analysis with Xcode-grade accuracy through direct integration with Apple's SourceKit-LSP. The server offers 15 different tools for single-file and cross-file analysis, symbol navigation, and code modification capabilities. It features token-optimized output for efficient AI interactions and works out-of-the-box with standard Swift projects, though requires an index store for cross-file analysis.

Try asking AI

After installing, here are 3 things you can ask your AI assistant:

• swift_analyze_file

  Analyze structure and symbols in a Swift file

  Try:Analyze the structure of ViewController.swiftTry:Examine the symbols in Main.swift
• swift_analyze_multiple_files

  Batch analyze multiple Swift files

  Try:Analyze all Swift files in the Models directoryTry:Check the structure of these files: AppDelegate.swift, SceneDelegate.swift
• swift_summarize_file

  Get symbol counts and file summary

  Try:Summarize the User.swift fileTry:Give me a summary of FileManager.swift with symbol counts
• swift_get_symbols_overview

  Extract top-level type declarations

  Try:List all top-level types in Networking.swiftTry:Show me all class declarations in DataModels.swift
• swift_get_declaration_context

  Get fully-qualified symbol paths

  Try:Get the declaration context for the login methodTry:Show the full path for the User class
• swift_get_file_imports

  Extract import statements

  Try:List all imports in Authentication.swiftTry:Show what APIs are being imported in Networking.swift
• swift_validate_file

  Validate syntax and types with swiftc

  Try:Check if PaymentValidator.swift has syntax errorsTry:Validate types in ComplexAlgorithm.swift
• swift_check_environment

  Verify Swift development setup

  Try:Check if my environment is ready for SwiftLensTry:Verify Xcode and SourceKit-LSP are properly installed
• swift_build_index

  Build index store for current project

  Try:Build the index for my Swift projectTry:Prepare cross-file analysis with index store
• swift_find_symbol_references

  Find all references to a symbol

  Try:Find all references to the User classTry:Show every usage of the authenticate method
• swift_get_symbol_definition

  Jump to symbol definition

  Try:Show where the database is definedTry:Find the definition of the cacheManager
• swift_get_hover_info

  Get type info and documentation

  Try:Get type information for the User structTry:Show hover info for the API_KEY constant

Comparable tools

Installation

{
  "mcpServers": {
    "swiftlens": {
      "command": "uvx",
      "args": ["swiftlens"]
    }
  }
}

# Navigate to your Swift project
cd /path/to/your/swift/project

# Build with index store
swift build -Xswiftc -index-store-path -Xswiftc .build/index/store

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