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The Brand Voice Builder: Make Claude Write in Your Voice

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    • The 5-question interview prompt (paste-ready, runs the whole flow for you)
    • 18 AI-isms to ban: vocabulary, sentence shapes, structural tells, rhetorical filler, tone
    • The 3 file locations explained: user global, project, skill file
    • How to test your voice file is actually loading (the /memory trick)
    Free guide
    The Brand Voice Builder
    5 pages · Installable AI artefact
    Perch.
    What's inside

    Five pages, one prompt, no fluff

    Built so you can paste, answer 5 questions, save the file, and have Claude writing in your voice in 15 minutes.

    01

    The Interview

    The paste-ready 5-question prompt. Claude asks one question at a time, pushes for specifics, then generates your complete brand voice file as a code block you can copy.

    02

    AI-isms to ban

    18 patterns that scream "this was written by AI", grouped into 5 categories: vocabulary, sentence shapes, structural tells, rhetorical filler, and tone. Drop the worst ones into your voice file as a starter ban list.

    03

    Where to save it

    The 3 paths explained: user global (everywhere), project-level (per repo), skill file (per workflow). Plus the /memory command to confirm it's actually loading.

    Who's writing this
    Tom Veysey
    Tom Veysey
    AI implementer for ecom · Founder, Perch

    I'm Tom. I run Perch, where we build custom profitability dashboards for Shopify brands. I write about how operators can use AI to do what used to need a developer or a creative agency. This guide is the one I wish I'd had when I first set up CLAUDE.md files for my own content stack.

    FAQ

    Does this only work with Claude Code, or also with Claude.ai / ChatGPT?

    The interview prompt and the AI-isms list work in any LLM. The setup section (chapter 3) is Claude Code specific, because CLAUDE.md is a Claude Code feature. For Claude.ai, you'd save the brand voice file as a Project instructions block. For ChatGPT, paste it into Custom Instructions.

    How many writing samples do I really need?

    10 is the floor. More is better. Mix formats: short captions, long-form posts, casual emails, formal copy. The model pattern-matches against the corpus you give it, so a wider corpus produces more flexible output.

    Will Claude actually follow the rules?

    Mostly yes, sometimes no. CLAUDE.md content is delivered as a strong nudge, not a hard rule. Specificity helps a lot: "never use the word 'delve'" holds tighter than "write naturally". When Claude slips, add the slip to your file as a new ban. Your file should grow over time.

    Do I need to restart Claude Code after editing the file?

    Yes. CLAUDE.md is loaded at the start of each session. Mid-chat edits aren't picked up. After you tweak the file, start a fresh session for the changes to take effect.

    What if I have voice rules that should only apply to certain projects?

    Use a project-level CLAUDE.md at the root of that project. It stacks on top of your user-global file, so both load together. Useful if you write in a different tone for client work vs your personal brand.

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