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A frosted-glass architecture graph of an app, glowing amber as its phases are built

Architecture planner for AI-built products

Plan itbefore theagentsbuild it

One living atlas for your product: the architecture, the delivery phases, real costs and the prep list of keys and accounts. When the plan holds, agents build it phase by phase.

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Phase 1 · Hostedin sync ✓

Move to lean the plan · click to wake the cat for a drift check

Claude Code✦Cursor✦Codex✦Windsurf✦Any MCP client✦GitHub✦Self-host✦

The problem

Agents write code in minutes.
Nobody remembers why it is shaped that way.

01

No plan, so every agent invents its own architecture.

02

Costs and keys show up late, after the code is written.

03

The plan drifts from the code the day after it is written.

How it works

Four steps from idea
to pull requests.

  1. 01

    Plan

    Describe the idea. The architect lays out parts, journeys and delivery phases in one atlas.

    actorFounder
    systemweb-appp1
    containerviewerp1
    containermcp-serverp2
    storecloud-dbp1
  2. 02

    Cost

    Every part carries real prices and AI build cost, so the budget is known before a line of code.

    Lighthouse VPSRp330rb / mo
    DomainRp180rb / yr
    LLM creditsRp450rb / mo
    AI build (size m)Rp1,2jt once
    First monthRp2,16jt
  3. 03

    Prep

    Keys, accounts, domains: the prep list says what a person must get ready, by env name, never the secret.

    DOMAINready
    SESSION_SECRETready
    GITHUB_APP_IDwaiting
    XENDIT_SECRET_KEYwaiting
  4. 04

    Bypass run

    When prep is ready, agents build phase by phase and open PRs. Drift checks keep code and plan in sync.

    feat: owner-only login#41
    feat: cost lines in IDR#42
    feat: billing webhooks#43
    drift check0 problems

Features

One atlas.
Everything the build needs.

Drift check

Every commit is matched to the atlas. Parts that changed, paths that point at nothing and folders nobody claims show up before they rot.

Journeys

Walk a user through the system step by step, so gaps show before code.

Real costs

Monthly, yearly and one-off lines in rupiah, plus the AI cost to build each part.

MCP for any agent

Claude Code, Cursor or Codex read and write the same atlas through MCP tools.

Delivery phases

Each part has a phase, a gate and a size. Agents build one phase at a time.

Prep, never secrets

The prep list names what a person must get: keys, accounts, domains. It stores env names; values live in an encrypted vault and never come back to the browser.

“The cat naps.
The plan keeps watch.”

Every night the atlas checks itself against your code and tells you what drifted, before anyone builds on top of it.

Pricing

Free to host yourself.
Simple when we host it.

Self-host

Rp0 forever
  • Open-source core on your own server
  • Viewer, MCP tools, drift checks
  • No project limit
Most picked

Solo

Rp99rb /month
  • Hosted, no setup
  • GitHub sync and nightly drift
  • AI credits for architect and chat

Team

Rp249rb /seat/month
  • Everything in Solo
  • Editors, checkers, viewers
  • Share links and comments

Agency

Custom talk to us
  • White-label on your domain
  • Many clients, one place
  • Priority support

Cloud accounts open soon

The cloud runs privately for now. Leave your email and we will tell you when it opens.

FAQ

Questions,
answered.

Where does the plan live?

In your repo, as atlas.yaml. The cloud reads and writes the same file, so the plan travels with the code.

Which agents work with it?

Any agent that speaks MCP: Claude Code, Cursor, Codex and others. They read the plan, claim work and report back.

What is a bypass run?

When every prep item for a phase is ready, agents build that phase on their own and open pull requests. Drift checks keep the code and the plan in step.

Can I host it myself?

Yes. The core is open source and runs on your own server for free. The cloud adds hosting, GitHub sync, credits and team features.

Is the cloud open for signups?

Not yet. It runs privately while we finish billing and teams. Leave your email and we will tell you when accounts open.