Ship the right architecture before you write a line of code.
The technical cofounder for non-technical founders — a production-grade architecture, stack, and build plan, the way a senior CTO would do it. For 0% equity.
Read-only, one pass — your real components, workflows & risks, animated in 3D. No repo yet? Describe your idea instead →
Instant & free · no signup · or play with a live 3D system first ↓
Play with a real architecture, right here.
Three real systems Jaguar designs and reviews — 6 layers, 20+ components, replicas and all. Pick a use case, click a business workflow, and watch the data move through the system.
Drag to orbit · scroll to zoom · ×N = replicas that scale · red dashes = what's missing. Design your own in Studio → — or paste your GitHub repo there and see your actual system in 3D, your real workflows animated.
Vibe-coding tools ship features. Nobody's designing the system.
Design it. Check it. Build it.
The loop a technical cofounder runs — before, during, and after your build.
1 · Design
From an idea, PRD, Figma — or just a URL — Jaguar architects the full system: services, data, stack, and compliance (HIPAA, PCI, SOC 2), every choice justified in plain English.
2 · Review
Upload your design or what your dev, agency, or AI tool built. Jaguar overlays ranked risks on the exact components affected — and shows the corrected design.
3 · Build plan
A phase-by-phase plan with paste-ready prompts for Lovable, Bolt, or Cursor — guardrails baked in. Clear enough for an intern. No CTO required.
FounderI spent 10 years becoming a CTO. Now I'm building one.
“Senior infrastructure engineer at Bloomberg. An a16z-backed exit. And one expensive lesson, learned over and over: great ideas don't die from bad products — they die from the systems underneath them. A technical cofounder catches that on day one, but they cost 33–50% of your company — if you can find one at all. So I'm building that cofounder, for every founder who can't.”
Where Jaguar AI fits.
The category isn't code generation — it's technical judgment.
| Capability | Vibe-coding (Lovable, Bolt, v0) | AI IDEs (Cursor, Copilot) | Human fractional CTO | Jaguar AI |
|---|---|---|---|---|
| Generates full architecture | Partial | ✕ | ✓ | ✓ Instant |
| Reviews existing code & design | ✕ | Line-level | ✓ | ✓ System-level |
| Justifies stack decisions | ✕ | ✕ | ✓ | ✓ |
| Industry compliance built in | ✕ | ✕ | Sometimes | ✓ |
| Available in minutes | ✓ | ✓ | ✕ | ✓ |
| Monthly cost | $20–100 | $20–40 | $4k–15k | free to try · from $199/mo |
A technical cofounder isn't a one-off review.
It's judgment you need every day.
Think about what a real CTO cofounder actually does between launches: decides what to build, reviews what got built, unblocks the team, and watches for drift. Jaguar does those four jobs — without the salary or the 10–50% equity a human cofounder costs.
Decide
Every new feature starts as a spec: Jaguar architects it, picks the stack, and writes the build plan — before a line of code exists.
Review
Paste a Lovable/Bolt/v0 link, a screenshot, or a repo export — Jaguar reviews what your dev, agency, or AI actually shipped against the plan. GitHub auto-review on every PR is rolling out.
Unblock
"Can we use Firebase for this?" "Is this quote fair?" "Why is it slow?" — plain-English answers grounded in your architecture, plus paste-ready prompts for your builder.
Watch
Project memory keeps every decision; a monthly health report tells you what's built, what's risky, and what to do next — so nothing drifts silently.
This is Co-pilot — your AI technical cofounder on retainer for $199/mo, zero equity. Most founders start with a one-time review, then keep Jaguar on from MVP to launch.
Request a demo →A fraction of a fractional CTO.
Start free. Get one deep audit with a CTO in the room — then keep a co-pilot watching every repo as you build.
✦ Free: run your first design review in Studio — no card, no call.
Review
- ✓ Every finding, ranked — plus a prioritized roadmap
- ✓ Private-repo scan + corrected architecture
- ✓ Build-spec hand-off (PDF)
- ✓ A live 30–45 min session with Eason on your actual code
Co-pilot
- ✓ Everything in Review — but continuous
- ✓ Unlimited re-scans across all your repos
- ✓ Weekly check: what changed, what'll bite you
- ✓ Design version history — catch drift early
Fractional CTO
- ✓ Everything in Co-pilot
- ✓ Human-in-the-loop reviews & calls
- ✓ Compliance support (HIPAA/PCI/SOC 2)
Enterprise
- ✓ Continuous GitHub monitoring
- ✓ SSO, audit logs & self-hosted
- ✓ Custom templates & security review
Checkout is instant. Sign in with the same email you pay with and your plan unlocks automatically — cancel anytime.
Questions, answered.
Are you replacing my AI coding tool? +
No — we're the layer above it. Lovable, Bolt, v0, and Cursor are great at writing code. Jaguar AI decides what should be built and how the system fits together, then reviews what those tools produce. Think architect and inspector, not bricklayer.
I'm non-technical. Will I understand the output? +
Yes. Every architecture comes with a plain-English explanation of each decision and why it matters. You'll be able to brief a developer, agency, or AI tool with confidence — and know when something looks wrong.
Why not just find a technical cofounder? +
If you can — great, and Jaguar still helps you vet what they build. But the market reality: a technical cofounder takes 33–50% equity, takes months to find, and cofounder conflict is the #1 startup killer — research on high-potential startups attributes ~65% of failures to it. Jaguar gives you the judgment layer for $199/mo, zero equity, from day one — and if the right human cofounder shows up later, you'll hand them a well-architected system instead of a rewrite.
How is this different from hiring a fractional CTO? +
A human fractional CTO costs $4k–15k/month and has limited hours. Jaguar gives you the same technical judgment instantly, for a flat fee — and if you want a real human in the loop, our Fractional CTO tier pairs the AI with a senior engineer.
What can I feed it? +
A one-line idea, a full PRD, a spec doc, Figma or screenshot designs — or your GitHub repo, including a codebase your AI tool already generated. The more you give, the sharper the architecture and review.
Do you handle regulated industries? +
Yes. Our fintech and healthcare templates bake in PCI-DSS, HIPAA, SOC 2, and GDPR considerations so high-stakes products are designed correctly from day one.
Do you need access to my code or repo? +
No. You share what you have — a link, screenshots, a PDF, or an export — and Jaguar reviews it. Nothing connects to your systems, and your uploads are used only to produce your review. Continuous GitHub monitoring exists for technical teams on Enterprise, and it's read-only and opt-in.
Who owns the output? +
You do — completely. Architectures, diagrams, and recommendations are yours to use, share, and build on however you like.
Meet the technical cofounder you've been looking for.
Describe your idea and watch Jaguar architect it in minutes. No engineer, no equity, no wait.