The refinement loop
- Define the readerwho, what they know, what they decide
- Draftwith audience, purpose and format stated
- Compare to criteriafit for this reader, still accurate?
- Specific feedbackwhat to change, and why
- Final human edityour judgment, your name
Repeat compare → feedback until the draft meets the criteria
Start with the reader, not the draft
Most “this isn’t quite right” reactions come from a draft written for no one in particular. Anthropic’s prompting guidance compares Claude to a brilliant new employee who lacks context on your norms: it cannot guess that the reader is a sceptical CFO with two minutes, unless you say so. Before asking for a draft — or a rewrite — pin down a few things about the reader.
| Question | CFO | Frontline team | Customer |
|---|---|---|---|
| What do they already know? | The numbers, not the operational detail | The process, not the finances | Neither; only their own experience |
| What do they need to do? | Approve or reject a budget | Change how they work on Monday | Understand what happened to them |
| What must come first? | The ask and the cost | What changes and when | An apology and what it means for them |
| Format and length | Half a page, figures in a table | Short checklist | Short email, no jargon |
Refining: say what to change and why
“Make it better” and “make it more professional” give Claude almost nothing to work with. Anthropic’s guidance points to three habits that make revision requests work. Explain the reason behind an instruction, because Claude generalises from the explanation. Say what to do rather than what not to do — “write in flowing prose paragraphs” works better than “don’t use bullet points”. And show examples: the guidance calls examples one of the most reliable ways to steer format, tone and structure.
Vague versus specific feedback
Vaguetext
This is too long and too technical.
Make it better for leadership.Specifictext
Rewrite this for our COO, who will
decide on Thursday whether to fund
phase two. She knows the business well
but not the system details.
- Open with the recommendation and cost
- Keep all figures exactly as they are
- Replace technical terms with what they
mean for operations
- Cut the implementation detail to one
sentence; offer it as an appendix
- Maximum 250 words, plain proseRefinement also has a limit. After two or three rounds of feedback on the same draft, it is often faster to fix the rest yourself, or to start a fresh request with everything you have learned about the reader folded into it. And the last edit is always yours: you know the relationship, the politics and the history that Claude does not.
For recurring audiences, you can set this once instead of in every prompt. Claude.ai’s personalisation features work at different scopes, and knowing which is which saves repetition.
| Feature | Scope | Good for |
|---|---|---|
| Styles | Chosen per conversation | Switching tone and format: presets Normal, Concise, Formal and Explanatory, or a custom style |
| Custom style from samples | Reusable across chats | Matching a house voice by uploading or pasting approved writing examples |
| Profile preferences | All your chats | General preferences such as terminology or how you like answers pitched |
| Project instructions | Chats in one Project | A standing audience and format for a workstream, such as board papers |
Adapting without drifting
Every rewrite is a chance for the facts to move. Simplifying is where it happens most: “up to 30%” becomes “30%”, “in the pilot region” disappears, a hedge is dropped because it sounded weak, or a friendly closing adds a commitment. So an adapted version needs its own check against the original — the same accuracy and completeness habits from 2.1, aimed at what the rewrite might have changed.
After any rewrite for a new audience
- Passes: Figures, dates and names unchanged
- Fails: Scope and qualifiers kept“some customers” became “customers”
- Passes: Caveats and risks still present
- Fails: No new commitments or promises“all delayed claims will be prioritised”
- Passes: Reading level and jargon suit the reader
- Check: Length and format suit the channel210 words; target was 150
Comparing drafts
Asking for two or three versions with deliberately different approaches — one leading with the numbers, one with the customer story — is a quick way to see options you would not have written yourself. The skill is in choosing between them. Anthropic’s evaluation guidance for builders stresses specific, measurable criteria over vague impressions, and tone and style is one of the dimensions it lists. The same discipline works for a single email: decide what “good for this reader” means before you read the drafts, then score each one against it.
Choosing between two drafts
Draft A — impressive
- Elegant opening paragraph on market context
- Recommendation appears in paragraph four
- 480 words; the reader has two minutes
- All figures correct
Draft B — fit for the reader
- Recommendation and cost in the first two lines
- Risks in one short list
- 220 words, figures in a small table
- All figures correct
Traps the wrong answers are built from
| Tempting but wrong | Do this instead |
|---|---|
| Asking Claude to “make it better” | Name the reader, the purpose, what to keep and cut, and the length. |
| Choosing the longest or most polished draft | Score drafts against criteria written for this reader before you read them. |
| Trusting a friendlier rewrite without re-checking it | Check figures, scope, caveats and commitments against the original. |
| Repeating the same audience instructions in every chat | Use a style, profile preferences or Project instructions at the right scope. |
| Endless rounds of feedback on one draft | After a few rounds, edit it yourself or restart with a better brief. |
You should now be able to
- Describe an audience in terms Claude can act on: knowledge, decision, priority, format.
- Write specific revision requests with reasons, positive instructions and examples.
- Check an adapted output for drifted figures, lost qualifiers, dropped caveats and added promises.
- Compare alternative drafts against criteria set in advance, and combine their strengths.
- Choose between styles, profile preferences and Project instructions for recurring audiences.