Use Claude Code to build your Claude.md routines

A non-programmer had Claude Code create their Claude.md instructions and used them to speed up repeat spreadsheet work.

Done with Claude Code· Beginner· Aug 2025

What they did
They asked Claude Code to draft their own Claude.md workflow files, since they do not write code themselves. After that, they relied on those instructions to make repeated jobs follow the same pattern each time. In comments, they described rules for organizing similar task files into well-labeled folders. For spreadsheet indexing, they said they attach Excel sheets, point Claude Code to the columns it should read and produce, and tell it to use its built-in reasoning instead of generating Python; they also run several IDE sessions side by side.
How it went
They said spreadsheet tasks that once consumed 3 full days can now be finished in about 30 minutes. They also said the results are more accurate than doing the work manually. The thread did not give a formal benchmark, and commenters raised concerns about letting company files be used this way.
Tips
Spell out exactly how you want spreadsheet work handled, especially if you want analysis rather than code. If the agent may edit existing workflow files, make it ask before replacing them.

Try it yourself with Claude Code

Ask me questions about how I work, then turn my answers into a Claude.md file for [role or project]. Cover [repeat tasks], [file organization], [tools], and [format preferences]. Draft clear instructions I can paste into Claude Code, then show me the full file and wait for my approval before changing, overwriting, deleting, sending, or submitting anything.

Fill in the [brackets]. Agents can make mistakes, so review anything before it is sent, paid or deleted.

Read the original on reddit.com ↗

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