Give Claude a folder and assign it tasks

What it is. Cowork is a tool that connects Claude to a folder on your computer. You point it at a directory, assign a task in plain language, and Claude works through it end-to-end: reading what is there, editing files, creating new ones, and planning the steps it needs to take.

Why it matters. Most AI workflows are conversational by necessity. You copy something in, Claude responds, you copy the result back out. Cowork breaks that loop by giving Claude actual file access, so a task like “reorganize these assets and rename them to this convention” or “write a first draft of the copy for each of these product images” can run through without you shuttling files around by hand.

How to use it. Set up a working folder for a project you are already on, something contained where you would not mind Claude having full read-write access. Write the task the way you would describe it to a junior who knows the tools but needs clear direction. Hand off something with a defined output, like generating alt text for a folder of images, drafting a style guide from a brief, or renaming and sorting a batch of exports. Watch the first run closely to calibrate how specific your instructions need to be, then loosen up as you get a feel for where it handles ambiguity well and where it does not.

Limits. File access cuts both ways. Claude can overwrite things, so keep this folder separate from anything you cannot afford to lose, and back up before you hand off a task you have never tried before. It also works within Claude’s context window, which means very large folders or very long files may not get the full treatment you expect. The tool is only as reliable as the instructions you write, and vague tasks will produce vague results.