What is Sketch?
Sketch is a coding agent.
It runs as a standalone process or as part of a cloud service integrated with GitHub. Sketch uses a custom web-based user interface, because agent workflows are too complex for the terminal and far different from the traditional IDE.
What should I ask it to do?
One of the hardest parts about using a coding agent is knowing where to start. You open it up and there is a blank text box. What do you type? Here are some ideas:
What does this program do?
Find a function that does not have a unit test and should. Write the test.
Fix https://github.com/yourname/yourproject/issues/N