I am looking for a C# tool or Visual Studio Extension to visualize the typed API of all the library I use (because there is not type in the MSDN doc, and some library have no apidoc).
What do you mean by typed api ? You can use the Object browser in Visual Studio if you want to look into the signatures of the dll you are referencing. Or if you want to generate documentation for a library you can use tools like GhostDoc