AI Product Development Toolkit

Free prompts and agent rules for building software with AI: clarify what to build, keep the work focused, and carry project decisions into the next session.

Copy a prompt into your AI chat, answer its questions, and review the resulting specification or handoff. The templates are Markdown files; you can use them without cloning this repository or installing a package.

Start here

What you need	Open this	What to bring	What you get
Turn an app idea into clear requirements	PRD prompt · Guide	Rough notes, intended users, and constraints	A draft Product Requirements Document built through questions and confirmation
Give your coding assistant clear working rules	Claude Opus 5 rules · Setup guide	Your existing project instructions and the matching model	Instructions for concise responses, task scope, and tool use
Continue a project in a fresh AI chat	Session-continuation prompt · Guide	The current conversation, while its history is still available	A reviewable handoff with decisions, progress, and remaining tasks

Try the PRD prompt

1. Open the PRD prompt file and copy its contents.
2. Replace the text between BRAINDUMP START and BRAINDUMP END with your idea; fill or remove the other bracketed placeholders.
3. Paste the prompt into your AI chat, answer the questions, and confirm the decisions before asking for the final draft.

Already have a PRD and a concise MVP concept? Use the ultra-lean build prompt to define the first build's purpose, features, and technical approach.

Choose your next step

You can enter at the step you need; each folder explains its required inputs.

Step	Resource	Output
Plan user research	Research questionnaire	Questionnaire draft, then an evidence-linked PRD input from collected responses
Define the product	PRD generation	Goals, users, requirements, and constraints
Map the experience	UX and user flow	User journeys and interface requirements
Choose the first release	MVP concept	Core problem, hypothesis, and limited feature scope
Plan the build	MVP development plan or ultra-lean build specification	Detailed development plan or a smaller build specification
Plan verification	Test plan	Test scope, cases, and acceptance criteria
Prepare a visual brief	v0 design prompts	A design prompt using your UX specification and MVP scope
Prepare the next session	Session continuation	Current state, corrections, and next tasks

For the full instructions, see the prompt template guide.

Configure your coding assistant

The agent configuration guide separates behavioral instructions from tool permissions:

• Claude Opus 5 instructions: review the model scope and merge relevant rules with your existing project instructions.
• Claude Code permission guardrails: an optional strict policy with broad restrictions; read its effects before using it.

The prompts use guided questions, confirmation points, and inputs from earlier steps to help you make explicit decisions. Outputs remain drafts: review requirements, code, and handoffs before relying on them, and remove private information you do not need to share with your AI tool.

Star this repository to save it for your next project. If you find an unclear step, open an issue with the template name and a small, non-sensitive example.

About and license

I develop these resources using official documentation, AI tools, and my own software development work. My separate Prompt Rulebook covers broader prompting techniques.

This toolkit is free to use, adapt, and share under the MIT license.