RefactorMCP

RefactorMCP is a Model Context Protocol server that exposes Roslyn-based refactoring tools for C#.

Run the console application directly or host it as an MCP server:

dotnet run --project RefactorMCP.ConsoleApp

- Extract Method– create a new method from selected code and replace the original with a call (expression-bodied methods are not supported).
- Introduce Field/Parameter/Variable– turn expressions into new members; fails if a field already exists.
- Convert to Static– make instance methods static using parameters or an instance argument.
- Move Static Method– relocate a static method and keep a wrapper in the original class.
- Move Instance Method– move one or more instance methods to another class and delegate from the source. If a moved method no longer accesses instance members, it is made static automatically. Provide amethodNameslist along with optionalconstructor-injectionsandparameter-injectionsto control dependencies.
- Move Multiple Methods (instance)– move several methods and keep them as instance members of the target class. The source instance is injected via the constructor when required.
- Move Multiple Methods (static)– move multiple methods and convert them to static, adding athisparameter.
- Make Static Then Move– convert an instance method to static and relocate it to another class in one step.
- Move Type to Separate File– move a top-level type into its own file named after the type.
- Make Field Readonly– move initialization into constructors and mark the field readonly.
- Transform Setter to Init– convert property setters to init-only and initialize in constructors.
- Constructor Injection– convert method parameters to constructor-injected fields or properties.
- Safe Delete– remove fields or variables only after dependency checks.
- Extract Class– create a new class from selected members and compose it with the original.
- Inline Method– replace calls with the method body and delete the original.
- Extract Decorator– create a decorator class that delegates to an existing method.
- Create Adapter– generate an adapter class wrapping an existing method.
- Add Observer– introduce an event and raise it from a method.
- Use Interface– change a method parameter type to one of its implemented interfaces.
- List Tools– display all available refactoring tools as kebab-case names.

Metrics and summaries are also available via themetrics://andsummary://resource schemes.

- Rundotnet testto ensure all tests pass.
- Format the code withdotnet formatbefore opening a pull request.

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