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After Tech Discovery, Transmuter generates detailed specifications for your product. These specifications describe exactly what will be built, and you get to review and approve them before any code is written.

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What are specifications?

Think of specifications as a detailed blueprint for your product. Transmuter generates two sets:
  1. Product Requirements — a comprehensive breakdown of every feature, user type, and business rule in your product
  2. Detailed Product Plan — the specific screens, interactions, data structures, and technical approach
Together, these documents typically run 200-400 pages and cover everything from “what happens when a user clicks this button” to “how data is organized behind the scenes.”
You do not need to read every page. Transmuter highlights the most important sections and organizes them into easy-to-scan cards.

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How to review

1

Open the review checkpoint

When specifications are ready, Transmuter pauses the building process and notifies you (both in the app and via email). Click Review Specifications to open the review screen.
2

Browse the specification cards

Specifications are organized into cards — each covering one aspect of your product (for example, “User Authentication,” “Payment Processing,” or “Dashboard Layout”).Each card shows:
  • A summary of what this section covers
  • Key decisions and assumptions
  • How it traces back to your original business plan
3

Approve, request changes, or add notes

For each section, you can:
  • Approve — this section looks good, proceed as described
  • Request changes — write what you would like different in plain language (for example, “I want users to be able to log in with their phone number too”)
  • Add a note — flag something for review without blocking progress
You can approve sections individually or use Approve All if everything looks good. Requested changes are processed by the AI before building continues.
4

Submit your review

Once you have reviewed all sections, click Submit Review. If you requested changes, Transmuter updates the specifications and may ask you to review the changes before continuing.

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What if I miss something?

The building process includes a second review checkpoint later, after a quality report is generated. You also have the option to submit feedback and request changes after your product is launched (see Submitting Feedback).

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Traceability

Every specification traces back to your original business plan. If you want to understand why something was designed a certain way, look for the “Source” indicator on each card — it shows which part of your business plan informed that decision.
The building process will not continue until you submit your review. If you need more time, that is fine — Transmuter waits indefinitely for your approval, and you will not be charged while the process is paused.