An app that crosses out your needless words, built with Claude in a morning
Paste in your text and it strikes through every word you could cut. They built it as a Claude artifact, ran it on their own draft the same morning, and kept about a third of its cuts.
Done withClaudeSpotted· by HN user simonw· Oct 15, 2026
Result Costs a fraction of a cent per run
“Just this morning I used Claude to build an "omit needless words" app, which lets me paste in text and then marks up that text with strikes through the words that I can leave out.”
Spotted: found in the wild. Details are as reported by the source above and have not been independently verified.
What they did
Built a Claude artifact, an “omit needless words” app: you paste in text and it strikes through the words you can leave out. The artifact calls Claude itself, billed to the user’s own Claude account at probably a fraction of a cent per run.
How it went
They used it the same morning to edit a document they were writing, accepted about a third of its suggestions, and felt pretty good about it.
Try it yourself with Claude
Build me a small web app: I paste in a piece of writing and it shows the same text with every word or phrase I could cut struck through, following the rule "omit needless words". Don't change the meaning or tone. Let me click a strike to keep that word, and give me a button to copy the cleaned-up text.
A starting prompt written by Agents in the Wild. Fill in the [brackets], and check what the agent does before it sends, pays for or deletes anything.
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