Skip to main content

Documentation Index

Fetch the complete documentation index at: https://doc.getrationale.app/llms.txt

Use this file to discover all available pages before exploring further.

Rationale is an AI workspace for product teams. It brings your PRD and Figma designs together in one place, audits the gap between what was specced and what was designed, and produces a dev-ready handoff doc when everything checks out. The goal is simple: catch missing logic, edge cases, and contradictions before they turn into engineering rework.

​
Who it’s for

Rationale is built for everyone who touches the space between a written spec and a shipped product.

Product managers

Get a single source of truth that spans PRD and design before engineering starts building. Every audit shows exactly where the story doesn’t add up.

Founders

Move fast without losing alignment. Rationale keeps your spec and your design in sync as requirements evolve, so you ship what you actually intended.

Product designers

Get your work reviewed in context, not in isolation. Rationale explains each gap in plain language so you know precisely what to fix before handoff.

Engineers

Start a sprint with fewer surprises. The audit catches missing logic, undefined error paths, and contradictory copy before they reach a ticket — or your codebase.

​
The problem Rationale solves

Product teams waste significant time on rework that was predictable. A PRD describes a behavior the screens never show. A design adds an empty state the spec never mentions. An edge case gets missed by everyone until an engineer hits it mid-sprint. These aren’t failures of effort — they’re failures of alignment. The spec lives in Notion, the designs live in Figma, and nobody has a reliable way to check whether the two tell the same story. Rationale is that check.

​
Key capabilities

Match specs with designs

Bring PRDs, design, and implementation context into one review so you can quickly spot where the story doesn’t fully line up.

Catch logic drift

Flag contradictions, missing logic, edge cases, and unclear requirements before they turn into delays, back-and-forth, or rework.

Ready-for-build plan

Turn messy product context into a clearer, aligned plan that helps teams decide whether something is actually ready for development.

Gap explanations

Each issue is explained in plain language so you understand why something is missing or inconsistent — not just that it is.

Unified context

Merge PRDs, Figma frames, and notes into one source of truth so the whole team reviews the same product picture.

Handoff export

Export a cleaner spec once the workflow passes review, so engineering starts with fewer surprises and less rework.

​
Three workflows, one source of truth

Rationale meets you where your project is. You don’t need a finished spec and polished designs to get value — you can start from either end, or watch for drift as both evolve.
The Match workflow connects your PRD and your Figma file. Every time Figma is saved, Rationale re-audits the designs against the spec and flags any new gaps. Use this when both a PRD and designs already exist and you want continuous alignment as both evolve.

​
Integrations

Rationale connects to the tools your team already uses.
  • Figma — pull designs directly from any Figma file or frame URL
  • Notion — import a PRD by picking any page from your workspace
  • Linear — push audit findings as a parent issue with per-gap sub-issues, including the relevant screen and PRD excerpt
  • Slack — receive audit summaries in a channel of your choice whenever Figma triggers a re-audit
  • File upload — bring in specs as PDF, Word, Markdown, or plain text
  • URL — paste any public Google Doc, Confluence page, or doc link

​
Where to go next

Get started

Create your first project and run your first audit in a few minutes.

Watch for drift

Link a Figma file and a PRD and let Rationale monitor alignment automatically.

Designs → PRD

Drop a Figma file and get a requirements doc written for you.

PRD → Design brief

Turn a written spec into a screen-by-screen brief your designer can build from.