Keep a household knowledge base of appliances, insurance and chores in Markdown

Math educator Scott Farrar built a household brain in Claude Code: Markdown files on appliances, warranties and insurance that he uses to shop for car insurance, plan repairs and run a shared to-do list.

Done withClaude Code· Nov 11, 2026

What they did

Scott Farrar, a math educator and parent, moved his home admin out of AI chats that forgot context and into Claude Code working on a folder of Markdown files, which he views in Obsidian. The files hold his appliances, warranties, insurance documents and the family to-do list. Claude suggested what to photograph first to fill it in. He uses it to compare car insurance quotes, plan repairs and track household tasks, shares the same system with his wife, and puts priority tasks and recent wins on a DAKboard wall display. He walked through it in a video episode with Claire Vo.

How it went

Farrar says it made him a sharper insurance shopper and that the shared to-do file is the part he keeps returning to. The episode notes give no numbers on time or money saved, and they mention a section on what happens when the AI gets out of sync with the files.

Worth knowing

The knowledge base is plain text files, so it outlives any one chat and two people can share it. Expect to spend time feeding it photos and documents before it is useful. Obsidian and DAKboard are only viewers here; Claude Code does the reading and writing. Farrar's own write-up is linked.

Try it

With Claude Code· 2 parts to fill in

Help me set up a household knowledge base in [folder path] as plain Markdown files. Start by asking me what to photograph or upload first (appliance labels, warranties, insurance policies). From each item I give you, create or update one file with the facts, dates and renewal deadlines, and keep a single to-do file with priorities. When I ask for help with a decision like [shopping for car insurance], read the relevant files first and show me a comparison. Never delete a file or overwrite a fact without asking me first.

Square brackets are the parts to fill in. The prompt is ours; the story is theirs.

Where they said it

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