The shipengine/js-api library instantiates a batteries-included, vanilla JavaScript client for interacting with the ShipEngine API. The client provides a set of fully-typed methods that map directly to ShipEngine API operations[^1], bound to a user specified via platform token.

• Converts all outbound JSON keys to snake_case for consumption by the ShipEngine API.
• Converts all inbound JSON keys to camelCase for use in JS.
• Attempts to refresh expired tokens on 401 Unauthorized responses, followed by retrying the original request.
• Logs all requests and responses to the console.

In addition to the client, the shipengine/js-api lib provides TypeScript types for all ShipEngine API entities.

import { ShipEngineAPI } from "@shipengine/js-api";

const client = new ShipEngineAPI("your-platform-token", {
  // Used when attempting to refresh the token on 401 responses
  getToken: async () => {
    return "your-platform-token";
  },
});

client.shipments.list().then((response) => {
  console.log(response.data);
  // > an object matching the response schema of https://shipengine.github.io/shipengine-openapi/#operation/list_shipments
});