Spec to App
Bring legacy code or specification documents — XAIO analyzes them, asks the right questions, and builds the full application from an agreed plan.
You rarely start from zero. Most projects begin with something that already exists: a legacy application, a specification document, screenshots of the tool you want to replace. XAIO takes exactly that as input. The agent analyzes the material, combines it with your prompt, asks clarifying questions where the source is ambiguous — and turns the result into a concrete plan. You approve the plan, XAIO builds the application.
From legacy code or a spec document to an app
Most software has a predecessor: an old application, a requirements spec, a process description, a screenshot of the tool being replaced. XAIO takes those as direct input — the agent analyzes them and builds the application from what you already have, on a modern stack: React, FastAPI, PostgreSQL.
How XAIO gets from source material to plan
Start from what exists
Hand over legacy source code, specification documents, PDFs, screenshots or plain text. The agent reads the material and identifies data models, workflows and business rules.
Analysis + prompt
Your prompt sets the goal, the analysis supplies the detail. The agent merges both into one picture of the application to build — instead of forcing your project into a single chat message.
Clarifying questions
Where the source material is ambiguous or incomplete, the agent asks targeted questions before anything is built — not after. Your answers become part of the plan.
A plan you approve
The result is a concrete build plan: pages, data model, API, integrations. You review and adjust it — then XAIO builds the application from it: frontend, backend, database and tests.
Plan first, then build
The plan is the contract for the build: which pages exist, how the data is modeled, which integrations are wired. Generation runs against that plan, and every release still passes tests and the security & quality gate. On the Platform Builder plan the same idea scales up to a full specification workflow — from an evidence pack (PDFs, documents, screenshots) through requirements and domain model to architecture with recorded decisions. Together with the auto-generated documentation, the plan stays a living part of the project.
Frequently asked questions
Can XAIO build an app from a specification document?
Yes — hand over the spec (PDF, text, screenshots) plus a short prompt. The agent analyzes it, asks clarifying questions and proposes a plan; after your approval it builds the full application.
Can XAIO rebuild a legacy application?
Yes — provide the legacy source code or its documentation. The agent analyzes data models, workflows and business rules and rebuilds the application on a modern stack: React, FastAPI, PostgreSQL.
What does the plan contain?
Analysis + prompt + your answers result in a concrete build plan: pages, data model, API and integrations. You review it before anything is generated.