A while ago I was frustrated that b2 provides no automated means of getting api transactions through their otherwise good b2-cli. As restic repositories grow, the number of api queries can grow non-trivially and also your costs. I wanted to track this without having to manually expose the api calls within restic which i feel strongly is a bad idea.
Anyway, i built a tool. Although not specifically just for restic, it was restic + b2 that influenced me to create it. I hope it’s helpful to others.