Receiving unknown signals is hard. It was already possible with GNU Radio, but much manual work and offline tweaking was necessary. Real-time signal analysis was hardly possible. During Google Summer of Code 2016, gr-inspector was developed to make these tasks more easy. The main purpose of the toolbox is to automate as much of a receiving process as possible during runtime. The components of the toolbox include a energy detection block, automated down-mixing/filtering/decimation, resampling, automated modulation classification (AMC) and OFDM parameter estimation/synchronization. Also, a GUI is able to display the analysis results. In this talk, I will give information about the background of the toolbox, what it's capable of and how to use it.