Every communication primitive. One API key.

One API key and one SDK for email, and soon SMS, video, scheduling and more.

import { Coss } from "coss";

const coss = new Coss({ apiKey: process.env.COSS_API_KEY });

await coss.email.send({
  from: "Acme <hello@acme.com>",
  to: "user@example.com",
  subject: "Welcome",
  html: "<p>Hi there</p>",
});

Transactional email from your own domains.

SMSSoon

Text messages worldwide.

VideoSoon

Rooms and recordings.

SchedulingSoon

Bookings and availability.

ShipyardNew

Shipyard runs Claude Code, Codex and other coding agents on your own dev boxes. Work with them from your laptop; close it, and they keep going. Open source, from the team behind coss.com.

About Shipyard