@book.dev/sdk

The shared contract for OpenBook — imported by the server, the desktop app, and the web shell so types and the HTTP API can never drift between them.

Exports:

• Types — Page/StoredPage, PageMeta, PageInput, PageSnapshot, ServerInfo, plus emptyPageSnapshot().
• API — the route paths (/api/pages, /api/pages/:id, /health). The server's router and the client both build URLs from these.
• DataClient — the storage-agnostic interface the document UI depends on.
• HttpDataClient — an isomorphic fetch-based implementation. The desktop points it at its bundled local server; the web shell at a remote one.

No React or Node dependencies — safe to import from any layer.

import {HttpDataClient, type PageInput} from '@book.dev/sdk';

const client = new HttpDataClient('http://127.0.0.1:4319');
const page = await client.savePage({data: {editorjs: {blocks: []}, values: [], names: []}});