Codalio Blueprint is a free add-on for AI building tools. Describe your idea in plain English — it asks a few friendly questions, then hands you a complete, well-organized product plan you can share with anyone.
Serious apps start with a spec, not vibes. Blueprint gives you the first step of Codalio's process — idea to PRD — free, in the open, where you already work.
It installs into the AI coding assistant you already use — no new account, no new tab, no payment. One install, and your assistant learns a new skill: prd-builder.
You don't fill out forms or learn templates. You describe your idea the way you'd tell a friend — messy and unfinished is exactly what it's built for.
Minutes later you have a Product Requirements Document — the same kind of blueprint product teams spend days writing — saved right into your project.
The whole journey, end to end. No jargon required.
Like installing an app on your phone. Two commands in Claude Code, or a few clicks in Cursor's plugin browser. Full instructions are just below.
Type /prd-builder and say what you want to build: "an app that helps small landscaping companies schedule crews and invoice customers." Vague is fine — that's the point.
Before writing anything, it asks what a good product manager would ask at kickoff: who is this for, what problem does it solve, what matters most in version one?
The Product lens maps your users, their stories, and a now/next/later scope. The Architecture lens outlines how it gets built and what data it needs. The Go-to-market lens sketches how it reaches first customers. Three specialists, one merged set of notes.
A single document lands in your project at docs/prd/ — ready to hand to a developer, a co-founder, or an investor. Or to Codalio, to build the real thing.
Nothing to configure and nothing to break — it’s copy-paste or a few clicks. Afterwards, type / and Blueprint is there, like any other plugin.
Run these two commands:
Then type /prd-builder and describe your idea.
Use it with / as with any other plugin. On Codex, Gemini, or Antigravity, install a local plugin pointed at the GitHub repo.
One plugin, five tools — including free, open-source ones. If you can type a sentence, you can use it.
Anthropic’s AI coding assistant. Install with two copy-paste commands — full steps above.
The popular AI editor. Install from the built-in plugin browser — no commands at all.
OpenAI’s coding agent — the tool itself is free and open source, just like Blueprint.
Google’s Gemini CLI — also free and open source. Blueprint ships as a ready-made extension for it.
Google’s agent-first editor. Blueprint includes a plugin built specifically for it.
Because Blueprint is open source, anyone can adapt it for other open tools — like Cline, Roo Code, Continue, or OpenHands. Contributions welcome.
Everything a product team would put together in days of meetings — in one document.
prd-builder is step one. The roadmap adds more free skills over time — all in the open.
Blueprint grows through community pull requests — and every PR is reviewed and approved by the Codalio team before it ships.
Describe the skill or improvement you have in mind and why it earns a place. Design gets discussed before anyone writes code.
Fork or branch, make your change from first principles, and validate locally with bash scripts/validate-manifests.sh. Keep each pull request focused on one skill.
Use conventional commit titles (feat:, fix:, docs:). A maintainer reviews and approves every PR before merge — nothing lands unreviewed.
Short answers, no jargon.
A free, open-source plugin for AI building tools. Describe your product idea in plain English; it asks a few clarifying questions and writes a complete PRD — who it's for, what to build first, how it works, and how it reaches customers.
Yes — open source, no account, no trial, no paid tier. Run it on OpenAI's Codex CLI or Google's Gemini CLI (both free and open source) and the whole journey costs nothing.
No. If you can describe your idea in a sentence, you can use it. Installation is copy-paste — or a few clicks in Cursor — and everything after that is a conversation.
Five, out of the box: Claude Code, Cursor, Codex, Gemini, and Antigravity. And because it's open source, anyone can adapt it for other open tools like Cline, Roo Code, Continue, or OpenHands.
A product requirements document — the plan a product team writes before building. It's the document you hand to a developer, a co-founder, or an investor so everyone builds the same thing.
Open a GitHub issue describing your idea, then follow CONTRIBUTING.md: one skill per PR, validate locally, conventional commit titles. Every PR is reviewed and approved by the Codalio team before merge.
