Set Up 3 Custom Slash Commands That Turn Any Brainstorm Into a Critique, Summary, or Action Plan

3 ChatGPT Slash Commands
By the end of this guide, you'll have three custom slash commands set up in your AI chat — type /critique to stress-test an idea, /TLDR to compress dense text, or /ActionPlan to turn research into executable steps, all without retyping long prompts.
Who This Is For
• You retype the same instructions over and over: "make this shorter," "give me steps," and "what's wrong with this?"
• You brainstorm with AI but never pressure-test the ideas before acting on them.
• You paste in long research or articles and want them compressed fast.
• You end up with strategy but no clear next steps to execute.
• You want a faster, command-driven way to work instead of writing a full prompt every time.
What You'll Build
Three custom slash commands, defined once at the start of a chat session:
• /critique — Claude or ChatGPT acts as a brutal critic, naming exactly what's weak, confusing, risky, or missing.
• /TLDR — Compresses dense text, research, or long answers into scannable bullet points.
• /ActionPlan — Converts research or strategy into a simple, logical, step-by-step plan you can execute immediately.
Once defined, each command works with a single keystroke for the rest of the conversation.
What You'll Need
• ChatGPT or Claude (the technique works in both).
• A brainstorm, block of research, or rough idea to work on.
• No tools, accounts, or installation required.
Slash Command Setup Prompt
I want you to remember three custom slash commands for the rest of this conversation. Whenever I type one of these followed by content, apply the matching rule automatically without me re-explaining it: /critique [idea or text] - Stress-test it. List its weakest points first, flag any risks or unstated assumptions, and only offer praise after you've genuinely tried to find the flaws. /TLDR [text] - Compress it into the shortest version that keeps every material fact. No filler, no restating the obvious, just the core. /ActionPlan [research or notes] - Turn it into a numbered, sequenced list of concrete next steps I can actually execute, not a summary of what the research says. Confirm you've saved all three commands in one line, then wait for me to use one.