How to hook api in windows phone 7?

Is there something allow me to develop a soft开发者_如何学运维ware in wp7 just like API MONITOR in windows?

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Windows Phone has some native API hooks (although undocumeted): http://blog.walshie.me/2010/11/12/windows-phone-7-native-apps-the-missing-link

However, due to the restrictive nature of the OS you might have problems in tracking down API calls from other applications, since you will need to have your own app running in the background, and that is currently the privilege given to system apps only.