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Concepts

Apistry is an implementation of the Contract as a Service (CaaS) architecture pattern. It's an OpenAPI-driven REST API service that automatically generates fully operational API endpoints directly from OpenAPI 3.0 specifications. Code is NOT generated from the contract; instead, Apistry interprets the contract at runtime to handle requests, perform data operations, and enforce validation.

What is Apistry?

Apistry is a runtime engine that reads OpenAPI contracts and turns them into working APIs without writing any service-specific code. Built on Node.js and the Fastify framework, it provides:

  • Contract-driven execution - Deploy APIs by publishing contracts, not writing code
  • MongoDB integration - Built-in CRUD operations with advanced query capabilities
  • Auto-validation - Automatic request/response validation using the contract schemas
  • High performance - Built on the Fastify framework
  • Production ready - Includes monitoring, error handling and logging

Openapi Design Requirements

In order for Apistry to function properly, there are some design requirements that must be followed. See: OpenAPI Design Requirements

Use Cases

Apistry is ideal for:

  • Rapid API Development - Go from concept to working API in minutes
  • CRUD-Heavy Applications - Data management applications with standard create/read/update/delete patterns
  • Prototyping - Quickly validate API designs before investing in custom implementation
  • Internal APIs - Backend services for internal tools and dashboards
  • Event-Driven Architectures - Simple CRUD surface with business logic in event consumers