Guide

How to add features to an existing app

Follow these steps in Evonx to new functionality merged into a live codebase with reviewable diffs.

Build it with Evonx More guides

Step-by-step

Write a narrow spec

User story, acceptance criteria, and non-goals for the change.

Point Evonx at the repo

Confirm branch strategy and coding conventions in the prompt.

Request incremental PRs

Prefer smaller changesets that pass CI over massive rewrites.

Review security touchpoints

Auth, payments, and PII paths need explicit human review.

Update docs and tests

Ask for tests where the project already uses them; update README if behavior changes.

Deploy with your pipeline

Use existing staging/production processes—Evonx does not replace DevOps.

Outcome

New functionality merged into a live codebase with reviewable diffs.

Related resources

How to connect an existing GitHub repositoryFollow these steps in Evonx to your repository imported into Evonx with evolution threads and PR-based delivery.How to build an admin dashboardFollow these steps in Evonx to an admin console with user management, settings, and audit visibility.How to build an inventory systemFollow these steps in Evonx to inventory software tracking SKUs, locations, adjustments, and low-stock signals.How to build an internal toolFollow these steps in Evonx to a focused internal app replacing spreadsheet workflows with approvals and history.How to add Stripe subscriptionsFollow these steps in Evonx to subscription billing wired with webhooks updating entitlements in your app.How to modernize a legacy appFollow these steps in Evonx to incremental modernization PRs that reduce risk compared to big-bang rewrites.

FAQ

How big should the first feature thread be?

Small enough to preview and review in one PR—one user-visible outcome with clear acceptance checks.

What if requirements are unclear?

Describe observed behavior and constraints first; use preview as the shared artifact for stakeholders.

Can non-engineers participate?

They can specify outcomes and review previews; engineers still own merge and production safeguards.

Build production software with Evonx

Start from a template or connect an existing repository. Evonx helps you ship real applications with preview, evolution threads, and pull-request delivery—not disposable demos.

Get started free