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For one purple pen

One purple pen, for everything you build on the web.

A purple pen marks the part of the page that matters. onedb is that pen — the reference desk for every common website part, with examples and prompts.

Open the directory

Picture an editor leaning over a draft with one purple pen. They don't rewrite everything — they mark the three lines that matter, suggest the cut, point at the example that already works. onedb is the same idea, for the web. One purple pen across every common website part: hero, navigation, pricing, dashboards, landing pages, portfolios, motion. Each part comes with its real name, the references worth studying, and a tuned AI prompt so Cursor or Claude builds it the right way the first time.

Start here

Mark the part that matters

A purple pen across the page. Every collection in onedb is a folder of parts: hero, pricing, dashboard, landing, portfolio, motion. Sorted by what they do, not by trend.

Reference the example that already works

Every part links to the sites that ship it well — Linear, Vercel, Stripe, Arc, Apple, Anthropic. Credit lines included.

Hand the AI a tuned prompt

One purple pen, one tight component. Paste the prompt into Cursor, Claude, or v0 and get production UI, not a demo.

Questions about one purple pen

  • Why 'one purple pen'?

    Because a great editor doesn't rewrite — they mark the lines that matter. onedb is that purple pen for the web: the part worth fixing, the example worth copying, the prompt worth pasting.

  • Is this the same as the homepage?

    It's the same directory, framed the way some people search for it. If 'one purple pen' is how you remember us, this is the page to bookmark.

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