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decompile_method

Decompilation

Extracts a single method from a type within a .NET assembly. Decompiles the containing type, then isolates the named method from the output. Particularly useful when a type is too large to return in full, or when you only need one method’s implementation.

Parameters

Parameter	Type	Required	Default	Description
`assembly_path`	`string`	Yes	—	Path to the `.dll` or `.exe` file
`type_name`	`string`	Yes	—	Fully qualified type name (e.g., `MyApp.Services.AuthService`)
`method_name`	`string`	Yes	—	Method name to extract (e.g., `Validate`)
`show_il_code`	`bool`	No	`true`	Output IL bytecode instead of C# (more reliable for extraction)
`language_version`	`string`	No	`"Latest"`	C# syntax version: `CSharp1`—`CSharp12_0`, `Preview`, `Latest`
`use_pdb_variable_names`	`bool`	No	`false`	Use original variable names from an existing PDB

Example

MCP JSON
Python

{
  "tool": "decompile_method",
  "arguments": {
    "assembly_path": "/path/to/MyApp.dll",
    "type_name": "MyApp.Services.AuthService",
    "method_name": "ValidateToken",
    "show_il_code": false
  }
}

result = await client.call_tool("decompile_method", {
    "assembly_path": "/path/to/MyApp.dll",
    "type_name": "MyApp.Services.AuthService",
    "method_name": "ValidateToken",
    "show_il_code": False,
})

Response

Returns the extracted method body as formatted code. If multiple overloads share the same name, all matching overloads are returned with separate headings. IL mode (default) uses ECMA-335 method delimiters for reliable extraction. C# mode uses signature matching with brace-depth counting.

decompile_assembly — decompile an entire type or assembly
search_methods — find method names by pattern before extracting
list_types — discover fully qualified type names