HTTP Toolkit fits in here because it's open-source, it's European (I'm British, so Brexit has made that more awkward, but I live in Barcelona), it already provides tools to support transparency & privacy (HTTP Toolkit has been used for privacy research by organizations from the FTopens in a new tab to Privacy Internationalopens in a new tab, plus a huge part of the user base is security researchers, especially for Android), and so it's perfectly placed to provide tooling for this kind of decentralization.