Nice! Feature #2 here is basically an implementation of the “write code to call tools instead of calling them directly” that was a big topic of conversation recently.

It uses their Python sandbox, is available via API, and exposes the tool calls themselves as normal tool calls to the API client - should be really simple to use!

Batch tool calling has been a game-changer for the AI assistant we've built into our product recently, and this sounds like a further evolution of this, really (primarily, it's about speed; if you can accomplish 2x more tools calls in one turn, it will usually mean your agent is now 2x faster).