San Francisco-based security company Traceable, co-founded by Jyoti Bansal and Sanjay Nagaraj, has raised $30 million in strategic funding. The investment, led by Citi Ventures, will be used to accelerate product development, scale up the company’s platform and customer engineering teams, and build out its partnership program. Traceable’s platform uses AI to analyze API usage data and learn normal API behavior to spot activity that deviates from the baseline. The company’s software can discover and catalog existing and new APIs in real-time, including undocumented and “orphaned” APIs. Traceable claims to be analyzing around 500 billion API calls a month for ~50 customers and projecting revenue to double this year.