One prompt, one task: when to split a saved prompt in two

Saved prompts tend to grow sideways. A prompt that drafts replies to support emails picks up a line asking it to rate the email's urgency. Then another asking it to suggest a help-centre article. Each addition made sense at the time. Now one prompt is doing three things, and none of them quite as well as it used to.

The fix is usually to split it. Here's how to tell when, and how.

Signs a prompt is doing two things

• The output has parts that go to different places. The reply goes to the customer; the urgency rating goes into your tracker.
• You regularly delete part of what comes back. If you only wanted the reply today, the rest is noise.
• It has "if" instructions. "If it's a refund request, also..." is often a second prompt hiding inside the first.
• The format rules pull against each other. "Warm and conversational" and "return a rating from 1 to 3" rarely sit well in one answer.

How to split it

1. List what the prompt produces, one output per line.
2. Give each output its own prompt, starting with only the instructions that shape that output.
3. Copy the shared context into both. Who the customer is, what the product does, the tone you write in. A little repetition is cheaper than a tangled prompt.
4. Chain them if one needs the other. Run the first, paste its result into the second.

What each half keeps

Each half keeps the context both need, its own format rules, and its own limits. It drops every instruction that only mattered to the other half. If a line makes sense in both, it probably belongs in both.

For context, we make PromptAlo, a Chrome extension that adds AI metadata tags to prompts you save. A rough heuristic: if the AI tags on a saved prompt miss the point, the wording probably does too.

Have you split a prompt like this, and where did you draw the line?

https://promptalo.conceptgame.co.uk/?utm_source=devto&utm_medium=brand_post&utm_campaign=w5-tue-devto-short

This post was written with AI assistance and edited by the PromptAlo team.