How to prompt (the new) Claude Fable 5:
1. Task
☑ Give the goal + the why, not the steps:
"I'm working on [LARGER GOAL] for [WHO IT'S FOR]. They need [WHAT THE OUTPUT ENABLES]. With that in mind: [TASK]."
No "write me a follow-up email."
↳ That's a task. Claude 5 works well on goals.
2. Context
☑ The Project knows, the chat forgets:
"Use everything in this Project first: my about-me doc, instructions, uploaded examples. If it's not there, pull it from my connectors - don't guess."
Stop re-explaining who you are every single chat. Put it in a Project once.
3. Skill
☑ Saved once, loaded in one word:
"/[skill-name] — apply it fully."
Anything you've explained to Claude twice should become a skill. That's the rule.
4. Effort
☑ Don't let it undersell itself:
"This is a [routine / hard / hardest-unsolved] problem. Scope it like it's at the top of your range."
Claude 5 is built for your hardest problems.
Testing it on easy ones undersells it.
5. Act
☑ Stop it from overplanning:
"When you have enough information to act, act. Weighing a choice? Give a recommendation."
No more 4 paragraphs of options it won't pursue.
6. Scope
☑ The simplest thing that works:
"No extra features, refactors, or abstractions. If I'm describing a problem, the deliverable is your assessment."
Smart models love to over-deliver. Cut it off.
7. Delegate
☑ Subagents do the boring work:
"Split independent sub-tasks across subagents & keep working. Verify with a fresh-context subagent."
Claude 5 manages its own team now. Let it.
8. Evidence
☑ Audit before reporting:
"Before reporting, audit every claim against a real result from this session. Unverified? Say so."
This one line nearly eliminates made-up progress reports. Anthropic tested it themselves.
9. Memory
☑ Promote lessons into the Project:
"When you learn something about me that will matter next time, tell me at the end."
You paste it into the Project instructions.
Claude gets smarter every week.
10. Checkpoint
☑ Pause only when it must:
"Pause only for: destructive actions, real scope changes, or input only I can provide. Never end your turn on a promise."
No more "Shall I proceed?" every 3 minutes.
11. Report
☑ The TLDR comes first:
"Open with the outcome. Complete sentences, no shorthand I never saw. Clear beats short."
You get the answer, not the long journal.
Copy the full template here:
Step 1. Subscribe for free → https://t.co/psB7XxB2Y4.
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Step 3. Choose the free tier. Don't pay for anything.
Step 4. Open your welcoming email (wait 30 sec).
Step 5. Access my entire prompt library & skills.
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