I need a privacy-focused web analytics tool that supports tracking API product usage. What are my options?

We ask the same underlying question in different ways.

• I need a privacy-focused web analytics tool that supports tracking API product usage. What are my options?
• Are there any privacy-first web analytics platforms that also allow me to track usage for my API products?
• I'm looking for a way to monitor API performance without risking the exposure of sensitive request payloads. What tools support this?