oRPC combines Remote Procedure Calls (RPC) with OpenAPI to create a type-safe API development framework. It ensures that inputs, outputs, and error handling remain consistent and type-safe from client to server. The framework supports a contract-first approach, allowing developers to define their API specifications prior to implementation. Built-in OpenTelemetry support enhances observability, making it easier to monitor and debug applications. The framework integrates smoothly with various frontend frameworks like React, Vue, and Angular, as well as state management libraries like TanStack Query and SWR. It also includes support for native data types such as Date and BigInt. Notably, oRPC performs well in multi-runtime environments, including Cloudflare and Node.js, and features a lazy routing capability that improves cold start times. Developers can create servers and clients using oRPC's straightforward APIs. The example code illustrates how to define routers, handle requests, and generate OpenAPI specifications. The framework draws inspiration from tRPC and ts-rest, focusing on type safety and a robust developer experience. For those looking to create APIs with strong type guarantees and adherence to OpenAPI standards, oRPC presents a compelling option.