How to Write AI Prompts That Actually Work: The R-C-F-C Framework

The difference between AI answers you can ship and answers you have to rewrite isn't the model — it's the prompt. Use this 4-part framework and you'll fix 80% of bad output.

R — Role

Tell the model who it is. "You are a senior B2B copywriter" outperforms a blank slate every time.

C — Context

Give it the world: who the audience is, what already exists, what failed before. Paste the source material — don't summarize it.

F — Format

Specify the output shape: bullets, a table, JSON, 90 words, three options. Models follow format instructions almost perfectly.

C — Constraints

What to avoid: jargon, hedging, exclamation marks, em-dashes, the words "leverage" and "synergy". Negative instructions matter as much as positive ones. See 50 pre-built R-C-F-C prompts for ready-to-ship examples.

A complete example

You are a senior B2B copywriter (R). I sell project-management software to ops leaders at 50-200 person companies; pain = chaotic Slack updates (C). Write 3 LinkedIn hooks, each ≤15 words, plain-text, no emojis (F). Avoid the words "revolutionize" and "game-changer" (C).

This framework powers the prompts inside The AI Productivity Playbook — each one is R-C-F-C, just pre-filled for a specific job.