LangChain.js supports calling Writer LLMs.

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Setup

First, you’ll need to sign up for an account at https://writer.com/. Create a service account and note your API key. Next, you’ll need to install the official package as a peer dependency:
npm
yarn add @writerai/writer-sdk
See this section for general instructions on installing integration packages.
npm
npm install @langchain/community @langchain/core

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Usage

import { Writer } from "@langchain/community/llms/writer";

const model = new Writer({
  maxTokens: 20,
  apiKey: "YOUR-API-KEY", // In Node.js defaults to process.env.WRITER_API_KEY
  orgId: "YOUR-ORGANIZATION-ID", // In Node.js defaults to process.env.WRITER_ORG_ID
});
const res = await model.invoke(
  "What would be a good company name a company that makes colorful socks?"
);
console.log({ res });