list_types

Decompilation

Lists classes, interfaces, structs, delegates, and enums defined in a .NET assembly. Results are grouped by namespace with each type’s name, fully qualified name, and kind. This is typically the first tool to reach for when analyzing an unfamiliar assembly.

Parameters

Parameter	Type	Required	Default	Description
assembly_path	string	Yes	—	Path to the .dll or .exe file
entity_types	string[]	No	["class"]	Types to include. Accepts full names or single-letter shortcuts

Entity type values: class / c, interface / i, struct / s, delegate / d, enum / e

Example

MCP JSON

{
  "tool": "list_types",
  "arguments": {
    "assembly_path": "/path/to/MyApp.dll",
    "entity_types": ["class", "interface"]
  }
}

Python

result = await client.call_tool("list_types", {
    "assembly_path": "/path/to/MyApp.dll",
    "entity_types": ["class", "interface"],
})

Response

Returns types organized by namespace. Each entry includes the type’s short name, fully qualified name (e.g., MyApp.Services.AuthService), and kind (class, interface, struct, etc.). Results support pagination with max_results and offset parameters.

Usage tips

• Start here when analyzing an unknown assembly — the namespace structure reveals the application’s architecture.
• Use single-letter shortcuts for brevity: ["c", "i"] instead of ["class", "interface"].
• Pipe the fully qualified names from this tool into decompile_assembly with type_name for targeted decompilation.

Related tools

• search_types — find types by name pattern instead of listing all
• decompile_assembly — decompile types discovered here
• get_assembly_info — quick metadata before listing types