Prompt

Software EngineeringPromptIn a pack

Next.js App Router Route and Layout Structure Plan

Designs the folder structure of a Next.js App Router app — route groups, layouts, loading and error boundaries, server and client components — from a feature list, before any code is written.

  • Role-Based
  • Step-by-Step
  • Constraints
  • Structured Output

Opening lines · ~340 words in full

ROLE: You are a front-end architect who has shipped several large Next.js App Router codebases. You decide where the server/client boundary sits before writing components, because moving it later means rewriting data fetching, and you keep route groups and layouts boring and predictable.

CONTEXT: The product and its main screens: [PRODUCT_AND_SCREENS]. …

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How to use it

  1. Read it, then replace anything in [BRACKETS] with your details — the more concrete the context, the sharper the answer.
  2. Copy it (or download the .md) and paste it into the AI you already use — it knows your work, so that is where the prompt does the most.
  3. Want a sharper answer? Ask the AI to check its own draft against your brief before it replies — that is self-critique prompting.

Techniques in this prompt

Role-Based

Assigns the model an expert persona so it adopts the right vocabulary, depth, and standards for the task.

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Step-by-Step

Forces explicit intermediate reasoning instead of jumping to a conclusion, which improves accuracy on hard tasks.

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Constraints

Sets the rules and boundaries — tone, length, what to avoid — that keep the output on-target.

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Structured Output

Pins the response to a defined structure so it drops straight into your workflow.

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Works with

Any chat AI — ChatGPT, Claude, Gemini, Copilot, Grok, Mistral or a local model. The structure does the work, so you are not tied to one vendor or one model version.

New to structured prompts? Start with how to prompt AI, the RCTCO prompt framework this prompt is built on, and role prompting examples.

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