❝ Nico

Notes

The answer first, then the detail.

One question per note. Claims about anyone else's product are quoted from their own pages.

How do I make something run every month on a Mac?

A LaunchAgent with StartCalendarInterval, loaded with launchctl bootstrap. The plist, the test command, and the one behaviour that makes it better than cron on a laptop.

Claude Code project ideas for personal use, and which ones survive a month

Eight projects worth building, with the files each one reads and how often it runs. The third column is the one that decides whether you still have it in December.

Can you still read Slack messages older than 90 days?

On the free plan they are hidden rather than deleted for the first year, and permanently deleted after it. Slack's own wording, and what to do before the deadline.

How do I rename Mac screenshots with a local model?

A vision model running on your own Mac can name a screenshot from what is in it. The commands, the prompt that makes the names usable, and what to watch out for.

What happens to the files you upload to an AI?

Whether an upload trains a model, and how long it is kept, depends on your tier rather than the brand. One table, every row taken from the provider's own page.

How do I get a folder of receipt PDFs into one spreadsheet?

Decide the columns first, run one pass over the whole folder, then reconcile the total against your card statement. The steps, and the failure modes nobody lists.

How do I use Claude Code with a local model on an Apple silicon Mac?

Two environment variables and a model pull. The exact setup, the context length people get wrong, and what still reaches the network afterwards.

Does Claude Code send my files to Anthropic?

Only the files it reads — but a file it reads becomes part of the prompt, nothing is denied by default, and what happens next depends on your tier. The precise answer.

How do I make Claude Code run something every morning?

There are three schedulers and only two of them can read the files on your Mac. The cron and LaunchAgent route, written out, with the flags an unattended run needs.

How do I analyse a bank statement without uploading it?

Export CSV rather than PDF, keep it in a folder on your own machine, and point something local at it. The steps, and what each AI provider does with an upload.

How do I search a Slack JSON export?

The zip is one folder per conversation and one JSON file per day, and the messages name people by ID. How to read it, and what the export leaves out.

How to keep Claude Code running 24/7 on a Mac

Three separate things have to stay alive: the session, the Mac, and the work itself. What each one needs, and the one most guides never mention.