Knowledge card L2 · Context engineering informational

Cut It to Length Without Losing the Point

What it is

An editing pattern for cutting a piece to a target length where you tell Claude the exact target and, crucially, what must survive the cut — the core point, the call to action, the key example — so it trims aggressively without gutting the message.

"Make it shorter"no target· Cuts a bit, everywhere· May drop the key point· You ask again, and againTarget + must-keeps"200 words, keep the ask"→ Hits the length→ Protects the core message→ One clean pass
Name the target and what must survive — then cut hard.

Why it works

'Make it shorter' has no target and no priorities, so Claude shaves a little everywhere and often trims the thing that mattered most. A named length forces real cuts, and a must-keep list tells Claude what's load-bearing versus what's padding. That combination lets it remove the right 40% — the throat-clearing and redundancy — rather than a timid, even shave that keeps the flab and loses the point.

When to use it

Hard length constraints: an abstract, a character-limited bio, a one-pager, an email that's become a wall. Any time something must get materially shorter and still land.

When not to use it

When the piece is already tight and cutting would remove substance, or when the goal is clarity rather than length — that's a different edit. Don't compress a text that needs to breathe.

Prompt

Cut this to <target length / word count>. It currently runs long. What must survive the cut: <the core point, the ask, any specific must-keeps>. Everything else is negotiable — remove redundancy, hedging, and throat-clearing first. Show the cut version, then a one-line note on what you removed and why.

Example

A rambling 600-word update must fit 200 words, keeping the deadline change and the decision needed. Claude cuts the recap and the throat-clearing, protects those two points, and lands at 190 words that a busy reader actually absorbs — instead of an even shave that kept the padding and blurred the ask.

Advanced version

Ask for two cut versions at the same length — one that preserves detail and one that preserves tone — so you can choose what to sacrifice. Seeing the trade-off made explicit is faster than editing back and forth toward it.

Common mistakes

  • Giving no must-keep list, so the cut removes the one line the whole piece existed to deliver.
  • Accepting a version that hit the word count by deleting substance rather than padding — check what left.
  • Iterating 'shorter, shorter' without a target, which converges slowly and unpredictably.

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