Claude Fable 5 Master Prompt Template

[PURPOSE]
I am building [describe your project/goal].
The goal is to [explain the bigger objective].
The output should give me [what you need to walk away with].

[TASK]
Build/Create/Write [specific deliverable].
Make each [section/step/item] simple and easy to act on.
End with [final deliverable or checklist].

[CONTEXT]
Product: [what you are building or selling]
Team: [who is involved and their roles]
Resources: [budget, tools, existing assets]
Risks: [what could go wrong or block progress]
Goals: [specific metrics or outcomes you are targeting]

[EFFORT]
Use [low / medium / high / xhigh] effort for this task.
Focus on [deep thinking / speed / precision / creativity].
Do not spend time on [things that do not matter for this task].

[BOUNDARIES]
Act when you have enough information.
Do not add [extra features, frameworks, or work I did not ask for].
Keep the output [simple / focused / within X constraints].
Do not [specific things to avoid].

[VERIFICATION]
Before giving the final answer, check that every [action/recommendation/claim] links to [a specific goal, risk, or metric].
If something is not proven, call it an assumption.
Do not invent [numbers, feedback, results, or data].

[STOP CONDITIONS]
Only stop when you have [specific completed deliverable].
Each [section/week/item] must have [X number of actions or elements].
Each [action/item] must have [owner, timeline, metric, or output].
End with [final summary, checklist, or decision framework].

[OUTPUT FORMAT]
Present it as a [weekly plan / table / checklist / brief / report].
For each [item/action], show: [Field 1], [Field 2], [Field 3], [Field 4].
Make it clear, easy to read, and ready to [paste into a tool / share with my team / execute immediately].