LaunchFast
AI writes your code. Who checks the architecture?
LaunchFast ships with machine-readable guardrails that prevent AI tools from breaking your codebase.
AI tools are fast. That is the problem.
Cursor, Claude, Copilot — they write any code you ask for. Entire features in minutes. It feels like a superpower.
But they also silently introduce a second auth system, swap your database engine, or add a plugin architecture you never asked for. They optimize for the immediate request, not the long-term coherence of your codebase.
By the time you notice, you are 10,000 lines deep. The auth system has two competing patterns. The database layer assumes two different ORMs. The deployment config references infrastructure that was never set up.
The cost of fixing it exceeds the cost of starting over. And you only discover this after months of building on a broken foundation.
The faster you ship, the faster you lock in mistakes.
What a guardrail looks like
- 01You ask your AI to "add GitHub OAuth." Without a guardrail, it installs a new auth library, adds a separate session table, and rewrites your login route. The code works. The architecture now has two auth systems.
- 02With a LaunchFast guardrail, the AI reads a constraint file first. It knows there is one auth system, one session mechanism, one way to add a provider. It extends the existing pattern instead of inventing a new one.
- 03The difference is not what the AI can do. It is what the AI knows not to do.
LaunchFast ships with guardrail files (.cursorrules, CLAUDE.md, project constraints) that AI tools read before writing code. They prevent architectural drift, enforce boundaries, and keep your codebase correct even when AI is writing most of it. Not just a template. A founding state that stays correct as you build.
Inspect before buying
The documentation is public. The source code is open-source. Inspect both before spending a cent. If you disagree with the approach, you have saved yourself €199.
What you receive
AI guardrails (what €199 buys)
- Machine-readable constraint files (.cursorrules, CLAUDE.md) that AI tools read before writing code
- Enforcement of one auth system, one database pattern, one deployment target — no silent drift
- Updated guardrails as the template evolves — your constraints stay current
The foundation they protect (free and open-source)
- A TypeScript Remix codebase with authentication, payments, and email — integrated and tested
- SQLite deployment — starts single-region, scales globally with Primary-Replica when you need it
- Documentation that explains every decision, including what was deliberately left out
The code is free and open-source. The AI guardrails that keep it correct are what you are paying for.
The alternative is reviewing every line your AI writes. The cost when you miss something: an architecture that quietly breaks until a rewrite is the only fix.
€199
One-time payment. No subscription.
After purchase, you can authenticate with the LaunchFast CLI — it sets up the open-source template correctly and installs the AI guardrails that keep your codebase correct as you build.