Your files

Every session works in one folder. Your notebook is saved there, and files you give Claude are copied there, so the notebook’s code can load them.

Choose the session’s folder

Pick the folder with the folder chip on the Start a session screen. It lists recent folders, and Browse… opens any other. A new session on your Mac starts in the last folder you used there, or in ~/Documents/Endeavor the first time (on Windows, Documents\Endeavor in your user folder). On a server, the folder is on the server. See Servers.

Use one folder per project. Put the project’s data in it, and start the project’s sessions there. The sidebar groups sessions by folder.

Where notebooks are saved

Claude creates the notebook in the session’s folder when there is code to run, and gives it a name. It’s a plain Julia file ending in .jl, which Pluto can also open outside Endeavor. Pluto saves it as it changes.

To rename or move it, use Rename… or Move to… in the notebook’s ⋮ menu. Endeavor keeps track of the new place. If you move or rename it outside Endeavor, the notebook pane says “Can’t find” with the file’s name. Click Locate file… to show Endeavor where it went.

Give Claude a file

There are three ways:

• Type @ in the message box and pick a file that’s already in the session’s folder. Claude reads it from there. Nothing is copied.
• Click + under the message box and choose Add files or photos (⌘U), then pick one or more files from anywhere.
• Drag files onto the message box, or paste them.

Each file shows as a chip above the message box. Write what you want done with it, and send.

What happens to the file depends on what it is:

• A file from outside the session’s folder is copied into a data folder inside it when you send the message. Claude is told where the copy is, and reads it from there. The original stays where it was. If a file with the same name and the same contents is already there, Endeavor uses that one. If the name is taken by a different file, the copy gets a number, such as decay (2).csv. Files can be up to 2 GB.
• A picture (PNG, JPEG, GIF or WebP, up to about 3.7 MB) goes into the message itself, so Claude can look at it. It isn’t copied into the folder. To analyze a picture’s data with code, put the file in the session’s folder and name it with @.

On a server, the copy goes into the data folder of the session’s folder on the server.

Try it

Start a session and pick the example “Load a CSV file I’ll attach and show me what’s in it”. Attach a CSV file of your own with +, and send. Claude writes cells that load the copy in data and show what’s in it.