@xmtp/browser-sdk

XMTP client SDK for browsers

This package provides the XMTP client SDK for browsers.

To keep up with the latest SDK developments, see the Issues tab in this repo.

To learn more about XMTP and get answers to frequently asked questions, see the XMTP documentation.

[!CAUTION] This SDK is currently in alpha. The API is subject to change and it is not yet recommended for production use.

Requirements

Response headers

Server response headers must be set to the following values:

• Cross-Origin-Embedder-Policy: require-corp
• Cross-Origin-Opener-Policy: same-origin

Vite

Add the following to vite.config.ts:

import { defineConfig } from "vite";

export default defineConfig({
  server: {
    headers: {
      "Cross-Origin-Embedder-Policy": "require-corp",
      "Cross-Origin-Opener-Policy": "same-origin",
    },
  },
});

Next.js

Add the following to next.config.ts:

import type { NextConfig } from "next";

const nextConfig: NextConfig = {
  async headers() {
    return [
      {
        // adjust ":path*" as needed
        source: "/:path*",
        headers: [
          {
            key: "Cross-Origin-Embedder-Policy",
            value: "require-corp",
          },
          {
            key: "Cross-Origin-Opener-Policy",
            value: "same-origin",
          },
        ],
      },
    ];
  },
};

export default nextConfig;

Bundlers

This SDK and some of its dependencies use import.meta.url. Some bundlers must be configured to account for this during development.

Vite

Add the following to vite.config.ts:

import { defineConfig } from "vite";

export default defineConfig({
  optimizeDeps: {
    exclude: ["@xmtp/browser-sdk"],
    include: ["@xmtp/proto"],
  },
});

Install

NPM

npm install @xmtp/browser-sdk

PNPM

pnpm install @xmtp/browser-sdk

Yarn

yarn add @xmtp/browser-sdk

Reference docs

Access the XMTP client browser SDK reference documentation.

Usage

Check out our official documentation to get started developing with XMTP.

XMTP network environments

XMTP provides production, dev, and local network environments to support the development phases of your project. To learn more about these environments, see our official documentation.

Important
When you create a client, it connects to the XMTP dev environment by default. To learn how to use the env parameter to set your client's network environment, see Configure the client.

Breaking revisions

Because this SDK is in active development, you should expect breaking revisions that might require you to adopt the latest SDK release to enable your app to continue working as expected.

XMTP communicates about breaking revisions in the XMTP Discord community, providing as much advance notice as possible. Additionally, breaking revisions in a release are described on the Releases page.

Deprecation

Older versions of the SDK will eventually be deprecated, which means:

1. The network will not support and eventually actively reject connections from clients using deprecated versions.
2. Bugs will not be fixed in deprecated versions.

The following table provides the deprecation schedule.

Announced	Effective	Minimum Version	Rationale
There are no deprecations scheduled for this SDK at this time.

Bug reports, feature requests, and PRs are welcome in accordance with these contribution guidelines.

Developing

Run yarn dev to build the SDK and watch for changes, which will trigger a rebuild.

Useful commands

• yarn build: Builds the SDK
• yarn clean: Removes node_modules, dist, and .turbo folders
• yarn dev: Builds the SDK and watches for changes, which will trigger a rebuild
• yarn test: Runs all tests
• yarn typecheck: Runs tsc