Stabilize your AI-generated code
ContractSpec is the compiler that keeps AI-written software coherent, safe, and regenerable. You keep your app. You own the code. One module at a time.
The Problem
AI agents write code fast. Then the chaos begins.
In 2025, "vibe coding" and AI agents generate enormous amounts of code. But they have critical limitations that destroy long-term maintainability.
Can't enforce invariants
AI-generated code drifts from business rules over time. No source of truth means no safety.
Multi-surface chaos
API, DB, UI, and events get out of sync. One change breaks three surfaces.
Hallucinated refactors
AI "improvements" introduce subtle bugs and break contracts you didn't know existed.
Unmaintainable spaghetti
Teams ship fast initially, then spend months untangling AI-generated chaos.
The Solution
ContractSpec: The safety layer for AI-coded systems
Define contracts once. Generate consistent code across all surfaces. Regenerate safely anytime. No lock-in.
Canonical Source of Truth
Contracts define what the system should do, not just what it does. AI agents read specs, not implementations.
Multi-Surface Consistency
One spec generates API, DB, UI, events, and MCP tools. All surfaces stay in sync because they share the same source.
Safe Regeneration
Regenerate code anytime without fear. Specs enforce invariants. Breaking changes caught at compile time.
AI Governance
Constrain what AI agents can change. Enforce contracts they must respect. Flag violations automatically.
We Get It
Your fears, addressed
We know what you're thinking. Here's why those concerns don't apply to ContractSpec.
"I already have an app"
ContractSpec works with existing codebases. You don't start over — you stabilize incrementally, one module at a time. Start with one API endpoint, one data model, one contract.
"Vendor lock-in / losing ownership"
You own the generated code. It's standard TypeScript, standard SQL, standard GraphQL. ContractSpec is a compiler — like TypeScript itself. You can eject anytime.
"Adoption cost / learning curve"
Specs are just TypeScript. If you can write z.object({ name: z.string() }), you can write a ContractSpec. No new language, no magic DSL, no YAML.
"Forced migrations / magical runtime"
ContractSpec generates plain code you can read, debug, and modify. There's no proprietary runtime. Migrations are explicit, reversible, and in your control.
You keep your app.
We stabilize it, one module at a time.
You own the code. It's standard tech.
We're the compiler, not the prison.
Who It's For
Built for teams drowning in AI-generated code
AI-Native Startups & Technical Founders
Solo founders or small teams using Cursor, Copilot, Claude, or AI agents heavily. Messy AI-generated backends and frontends, inconsistent APIs, code that's hard to refactor.
Need: A way to stabilize AI-generated code without rewriting it.
Small Teams with AI-Generated Chaos
2-10 person teams that shipped fast with AI and now have tech debt. Multiple surfaces out of sync, no source of truth, afraid to touch AI-generated code.
Need: Incremental stabilization, safe regeneration, contracts as guardrails.
AI Dev Agencies
Agencies building many projects for clients using AI-assisted development. Repeating the same patterns, inconsistent quality across projects, handoff nightmares.
Need: Reusable templates, consistent contracts, professional handoff artifacts.
Scaleups with Compliance Needs
Growing companies that need audit trails, API governance, or regulatory compliance. AI-generated code doesn't meet compliance requirements.
Need: Governance layer, change tracking, contract enforcement.
What ContractSpec generates
One contract, multiple outputs. All in sync. All standard tech.
REST API
Type-safe endpoints with validation. Standard Express/Hono/Elysia handlers.
GraphQL Schema
Automatically generated resolvers. Standard Pothos/Apollo output.
Database Schema
Prisma migrations and types. Standard SQL underneath.
MCP Tools
AI agent tool definitions. Works with Claude, GPT, and any MCP client.
Client SDKs
Type-safe API clients. Standard fetch/axios underneath.
UI Components
React forms and views from specs. Standard JSX output.
How incremental adoption works
Pick one module
Start with one API endpoint, one entity, one surface. No big-bang migration.
Define the contract
Write a spec in TypeScript. Just types and Zod schemas you already know.
Generate & compare
See what ContractSpec generates. Compare to your existing code. Keep what works.
Expand gradually
Add more contracts as you see value. No pressure. No lock-in. Your pace.
Built for developers
Standard Tech Stack
- TypeScript & Zod — schemas you already know
- Prisma — standard database access
- GraphQL or REST — your choice
- React or any UI framework
- Bun, Node, Deno — all supported
No Magic, No Lock-in
- Generated code is readable & modifiable
- No proprietary runtime dependencies
- Eject anytime, keep everything
- Works with your existing CI/CD
- Open spec format
Ready to stabilize your codebase?
Start with one module. See the difference. Expand at your own pace.