Features

AI speed with developer control

Generate complete apps from conversation, see them running instantly, and take ownership of exactly the parts you want.

See your app running as you describe it

Control what you own, piece by piece

Your custom code is never overwritten

Standard technologies, no proprietary runtime

Say it once, get the infrastructure

No lock-in, ever

Progressive ownership in detail

Every part of your app can be in one of three modes. Change the mode anytime.

Weldr has full control. Perfect for database schemas, auth configuration, CRUD operations, and anything that's standard across apps.

# weldr.ownership.yaml

surfaces:

db: managed

auth: managed

Mix generated code with your custom logic. Your @custom blocks are preserved across every regeneration.

// Weldr generates this

export async function createTask(input) {...

// @custom — YOUR code, never touched

export async function createTaskWithAlert(input) {

const task = await createTask(input);

await sendSlackAlert(task); // Your logic

return task;

}

You own it completely. Weldr never touches this code, but validates that your implementation matches the expected interface.

# weldr.ownership.yaml

surfaces:

domain_logic: ejected

# Your pricing algorithm, billing rules, AI prompts

# Weldr validates contracts but never overwrites

Describe an app, watch it come to life, and experience progressive ownership firsthand.