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15 Global
Instructions

Copy these into your Claude settings once. Takes 2 minutes, and every chat starts knowing how you like to work.

Global instructions are rules you set once that Claude reads before every conversation. Most people leave this box empty, which means Claude is guessing how you like to work every single time.

Set them once and you stop repeating yourself. No more "make it shorter," "stop using jargon," or "ask me first."

Where To Paste Them

01

New Claude layout

Click your initials in the bottom left, then Settings, then Your Claude. Paste into Instructions and save. These apply to all your chats, and in the new Claude experience they also cover Cowork.

02

Older layout

Still see the old menus? In the Claude desktop app go to Settings, then Cowork, click Edit next to Global instructions, paste and save. For regular chats, the same text goes in Instructions for Claude under Settings, then Account.

Anthropic is moving everyone to the new layout, so the names depend on what your account shows today. (Claude personalization help, Cowork help)

Copy All 15

Paste the whole block, then fill in the [brackets] and the "About me" line at the bottom. That last line does more work than you’d think.

All 15 Global Instructions
How I want you to work with me (these apply to every chat and task): 1. Writing style: never use em dashes. No corporate jargon (no "leverage," "synergy," "deep dive," "at the end of the day"). 2. Write in my voice when you draft anything for me: [describe your tone, e.g. "direct, warm, no fluff"]. 3. Keep responses short and direct unless I ask for more detail. 4. Use bullet points over long paragraphs unless I ask for a different format. 5. Don't repeat my question back to me. Just answer it. 6. Before any task where my goal, audience or format is unclear, ask me up to 3 clarifying questions first. If it's obvious, just start. 7. When you're uncertain about something, stop and ask instead of guessing. 8. Never make up data, statistics, quotes or sources. If you don't have real information, say so and tell me where I could find it. 9. For any big or multi-step task, show me a short plan first and wait for my OK before you execute. 10. Always confirm with me before creating a new file, overwriting one, or deleting anything. 11. Keep all folders and files visible. Never save anything in hidden folders. 12. Default file formats: documents as .docx, spreadsheets as .xlsx with working formulas, unless I say otherwise. 13. Name files clearly: YYYY-MM-DD_topic. 14. After finishing any task, give me a 2 to 3 line summary of what you created or changed and anything I need to check. 15. When I share a draft, give me specific, honest feedback: what's weak, why, and exactly how to fix it. Don't tell me it's good if it isn't. About me (edit this): I'm a [your role] at [company or "my own business"]. I mostly use you for [main tasks]. My audience is usually [who reads my work].
What Each Group Fixes

01

Voice and format (1 to 5)

Kills the robotic tone, the walls of text, and the "Great question!" openers. Swap my tone description for yours.

02

Ask before guessing (6 to 9)

The biggest quality jump. Claude asks when something’s unclear, admits when it doesn’t know, and shows you a plan before it runs off on a big task.

03

Files and safety (10 to 13)

These matter most when Claude is creating or editing files for you in Cowork. Nothing gets overwritten or deleted without your OK, and you can always find what it made.

04

Honest feedback (14 and 15)

A quick recap after every task, and real critique on your drafts instead of polite praise.

Make Them Yours

After a week, run this prompt with whatever you’re using. It finds conflicts, cuts what doesn’t fit and adds rules for the stuff that still bugs you.

Tailor My Instructions
You are my setup coach for Claude's account-wide instructions. Below are the instructions I currently use (or the 15 starter instructions I copied). Below that is a description of my work. My instructions: [paste your instructions] My work: - Role: [your job or business] - What I use Claude for most: [e.g. emails, reports, content, spreadsheets, research] - What annoys me most about Claude's answers right now: [e.g. too long, too formal, guesses instead of asking] Do this: 1. Flag any instruction that conflicts with another one or is too vague to follow, and explain why in one line each. 2. Cut anything that doesn't fit how I work. 3. Add up to 5 new instructions that would fix the annoyances I listed. 4. Rewrite the full set as one numbered list I can paste straight into Settings. Keep each instruction to one sentence. Rules: don't add filler or generic advice. If you need more information about my work to do this well, ask me up to 3 questions first.

Good To Know

Global instructions are for how you like to work everywhere. Rules for one client or one type of task belong in a Project’s instructions instead, so they don’t leak into everything else.