Skip to content

Quality by design

The software factory with you in the loop

Plan, implement and verify software with your favorite coding agents. Work side by side in the App or browser, or in your own agent: terminal, IDE or agent app.

Runs on your computer · macOS, Windows and Linux

QualityLayer’s App walking through Plan, Implement and Verify for the usage-based billing example, from the first question to the pull request.QualityLayer’s App walking through Plan, Implement and Verify for the usage-based billing example, from the first question to the pull request.

Three steps, two approvals

You plan and you verify; agents do everything between. Each step is one page in the App and one Markdown file in your repository. Add your own checks, tools and skills to any step. Add step checks.

  • You decide
  • Agents work
  • Agents check
  1. Step 1 of 3

    Plan

    Your agent reads the code, asks what only you can answer and writes one Plan. You approve it once.

    • Questions, each with a recommended answer
    • Done means, with the steps that prove each point
    • Diagrams and clickable screens

    You approve

    Plan guide
  2. Step 2 of 3

    Implement

    Your agent cuts the Plan into slices and task cards and builds them without a stop.

    • A failing test before each change
    • Independent slices handed to other agents
    • A question only you can answer never stops the build

    Agents work

    Implement guide
  3. Step 3 of 3

    Verify

    Agents that did not write the code check every point and fix what fails. Then the page is your review.

    • Project checks, security scans and an independent review
    • Up to two fix rounds without you
    • The code, the screens and each point as it ran

    Agents check, then you approve

    Verify guide
  4. Then the pull request. Your agent handles failing checks and review comments. You control the merge.

    Pull request guide

Every decision, document and test run stays with the change.

Plan before you build

Agree on the plan, then review the tested change.

Prefer a conversation? Chat with your supported coding agent. Explore Chat

Your agent

The tools you already use

Claude Code, Codex, Cursor and more.

One plan

Approved by you before any code

Ask about diagrams and clickable mockups.

Proof

Independent review

A separate agent checks the result against your plan.

“With QualityLayer, developing software with agents finally feels like doing real engineering again.”

An engineer who uses QualityLayer

“I just wanted to say how much I LOVE QualityLayer. I feel like my productivity shot through the roof!”

Former Pilot Shell user, now using QualityLayer

Checks and independent review

QualityLayer runs your project's checks and security scans. A separate agent reviews the change against your request.

Project checks

Repeatable checks from your project.

  • Tests and typesYour own commands, recorded.
  • LintersYour project's rules.
  • Code healthComplexity and duplication.
  • Recorded proofEvery point needs evidence.

Independent agents

Reviewers that read your request and run it.

  • Security reviewInputs, access and secrets.
  • Independent reviewAn agent that did not write the code.
  • Design reviewChecks each finished design.
  • Second opinionAnother coding agent, optional.

Verify turns to you once every point passes, with the evidence.

Also in the App

See what needs you, try designs and keep project lessons.

See waiting and running tasks, their steps and next actions.

Read about Home

Works with the agents you already use

Work in the App, browser, terminal or IDE. The CLI connects other agents.

  • Claude Code
  • Codex
  • Cursor
  • Antigravity
  • Pi
  • OpenCode
  • Grok
  • GitHub Copilot

Use the models you already pay for

Sign in with the subscription you have or use an API key. Choose models for building and independent review.

  • Opus 5.5
  • Sonnet 5.5
  • Fable 5.2
  • Haiku 5.5
  • GPT-6.1 Sol
  • Grok 4.7
  • Gemini 3.8 Flash
  • Opus 5.5 builds it
  • Subagents when useful
  • Codex reads the plan
  • Claude Code reads the plan
  • Or one agent does every step

+ any model your coding agent offers

Your agents can talk to each other

Connected agents get skills to plan, design and check work. Claude Code can ask Codex for a review and receive its reply in the same session.

Example
Claude Codeexport-api
  1. Ask Codex to review what you just built.
  2. Sent the rate-limit change to Codex.
  3. from CodexREVISE: 2 itemsThe limit resets per process, not per account.
  4. Fixing both items.
Codexexport-api
  1. from Claude CodePlease review the rate-limit change on feat/export-limits.
  2. Read the change and ran its tests.
  3. to Claude CodeREVISE: 2 itemsThe limit resets per process, not per account.
  • Plan and buildUsing QualityLayer, add rate limits to the export API.
  • ChatUsing QualityLayer, chat about the billing refactor.
  • DesignsOpen the settings design in my browser.
  • SecurityScan this repository for leaked secrets.
  • Tasks and settingsShow my open tasks.

Ask in plain words, in any language. More about the skills

Runs on your computer

The App, your agent and your repository run on your computer.

Your computer
  1. Where you workYour task on the left, your agent on the right.QualityLayer AppBrowser
  2. Your agentEach runs as its own program in its own terminal.
  3. QualityLayerPlan, answer and review beside your agent. The CLI connects any other agent.Visual plansConversation
  4. Your repositoryEvery step is a Markdown file you can read, diff and commit.PlanDecisionsTest runs

Questions

Quality by design

Start with your next change

Download the App and connect your coding agent.

On a server, in WSL or in a container? Install the command line