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Overview

Contract-as-a-Service (CaaS) is a runtime engine that reads an OpenAPI contract and turns it into a fully functional CRUD API. Instead of generating code from the contract ("contract-first") or documenting code after the fact ("code-first"), the contract itself becomes the product: a single source of truth that the platform executes.

You provide a well designed openapi contract. The CaaS runtime reads that contract and provides a functional API. Your development team spends less time implementing endpoints and more time designing clear, consistent contracts and focusing on business logic.

If you want the backstory, read: Problem & Motivation
If you want the core idea first, read: Core Concepts
If you want to see how it works under the hood, read: Architecture & Runtime

Why now?

Most organizations are dealing with:

  • API sprawl – dozens or hundreds of services, each slightly different.
  • High maintenance cost – every service re-implements the same security, logging, database interactions and error handling.
  • Slow time-to-market – it can still take weeks or months to stand up a “simple” CRUD API.

CaaS solves these problems by moving the majority of the behavior into the contract and centralizing the runtime. When all the repetitive boilerplate is handled once in the platform, teams can ship new APIs dramatically faster with far fewer moving parts to maintain.

Key benefits

  • Time-to-market – go from idea to a working API in minutes instead of weeks or months.
  • Lower maintenance – you evolve contracts, not scattered service code.
  • Consistency by design – security, logging, monitoring, pagination, and error handling are implemented once in the runtime and applied consistently to every contract.

Who is this for?

  • API platform teams who want a scalable, opinionated way to roll out high-quality APIs across an organization.
  • Backend developers and solution architects who are tired of rewriting the same CRUD and plumbing for each project.
  • Engineering leaders who need faster delivery, stronger governance, and predictable API quality without heavy process overhead.