Ghost Server API Client

The `castle-api-client` package functions as the official JavaScript/TypeScript client for interacting with the `ghost-server` API. It implements a custom JSON RPC-like protocol, making HTTP POST requests to a single endpoint (`/api`) with a JSON body containing `method` and `args` fields. This design enables a unified and simplified communication interface. The client is highly versatile, supporting a broad spectrum of JavaScript environments, including Node.js, modern web browsers, Electron applications, and React Native projects. Its primary function is centered around user identity and authentication, relying on deep integration with Expo user accounts. This strategic reliance streamlines authentication workflows for Expo-centric applications. A key differentiator for `castle-api-client` is its architectural independence: it was specifically developed to decouple `ghost-server` from larger, more monolithic web stacks, allowing for faster development cycles and greater agility in evolving its features. This client is currently at stable version 7.0.0. While no specific release cadence is publicly detailed, its design emphasizes responsiveness to evolving needs, offering a lightweight and efficient solution for secure, cross-platform communication within the Expo ecosystem, particularly beneficial for projects needing robust login and identity management without entanglement in complex legacy systems.