Simon Willison published a full snapshot of ChatGPT Work session tools and skills

ChatGPT Work Tool and Skill Reference

The snapshot lists 232 callable tool interfaces and 44 skill definitions, grouped into categories like GitHub, Gmail, Calendar, document generation, and browser control. The post doesn't explain parameters or invocation details—it reads more like a capability catalog. Treat it as a reference for what a ChatGPT Work session can currently reach, not as official API docs.