Facebook doesn't fact check or monitor the content of political ads. Instead, the company offers Facebook Ad Library, Ad Library Report, and the Ad Library API so researchers can study how users are targeted on Facebook, and monitor Facebook Ads' impact on elections. Are the tools working?
Science Rockstars aims to transcend simple recommendation engines and A/B testing techniques to create personal profiles of pitches that persuade individually. Their Persuasion API allows applications to compile profiles of each customer and what sways them. Then, based on the profile, communication can be altered in real time in ways that best suit the customer and increase the conversion rate. The documentation notes that it can be implemented either on the server or client side (the latter includes a Javasctipt library to facilitate the process).