1MSG SDK

Official client SDKs for the 1MSG WhatsApp Business API.

API docs	docs.1msg.io
Platform	platform.1msg.io
Quick start	help.1msg.io
Changelog	CHANGELOG.md
Versioning	docs/VERSIONING.md
Support	support@1msg.io

Public OpenAPI contract: 1.0.0. 1MSG API service (git tags): v3.3.0. SDK packages track the public contract (1.0.x). Where a registry already required a republish after the package rename, the published line is 2.0.x and further bumps are patch-only.

Auth on every request:

https://{baseUrl}/{instanceId}/{path}?token={token}

Use MSG_API_TOKEN and MSG_INSTANCE_ID. Never commit tokens.

---

TypeScript / JavaScript

Package: @1msg/sdk

npm install @1msg/sdk@1.0.3

import { createClient } from '@1msg/sdk';

const client = createClient({
  baseUrl: 'https://api.1msg.io',
  instanceId: process.env.MSG_INSTANCE_ID!,
  token: process.env.MSG_API_TOKEN!,
});

await client.sendMessage({ body: 'Hello', chatId: '12020721369@c.us' });

Source: typescript/ · README · AGENTS.md

Python

Package: one-msg-sdk

pip install one-msg-sdk==1.0.2

Source: python/ · README

Java

Package: io.1msg:sdk

implementation("io.1msg:sdk:1.0.2")

Source: java/ · README

Kotlin

Package: io.1msg:sdk-kotlin

implementation("io.1msg:sdk-kotlin:1.0.3")

Source: kotlin/ · README

Scala

Package: io.1msg:sdk-scala

libraryDependencies += "io.1msg" %% "sdk-scala" % "1.0.3"

Source: scala/ · README

C#

Package: OneMsg.Sdk

dotnet add package OneMsg.Sdk --version 2.0.1

Source: csharp/ · README

Rust

Package: one-msg-sdk

cargo add one-msg-sdk@2.0.2

Source: rust/ · README

Ruby

Package: one_msg_sdk

gem install one_msg_sdk -v 2.0.2

Source: ruby/ · README

Go

Module: github.com/1msg/1msg-sdk-go

go get github.com/1msg/1msg-sdk-go@v1.1.1

Source: github.com/1msg/1msg-sdk-go

Swift

Package: OneMsgSdk

.package(url: "https://github.com/1msg/1msg-sdk-swift.git", from: "1.1.1")

Source: github.com/1msg/1msg-sdk-swift

PHP

Package: 1msg/sdk (GitHub; Packagist not published yet)

composer config repositories.1msg vcs https://github.com/1msg/1msg-sdk-php
composer require 1msg/sdk:^1.1.1

Source: github.com/1msg/1msg-sdk-php

C++

Package: one-msg-sdk (Git / CMake; Conan/vcpkg not chosen yet)

git clone https://github.com/1msg/1msg-sdk-cpp.git

Source: github.com/1msg/1msg-sdk-cpp

---

Published versions

Language	Registry name	Version
TypeScript	@1msg/sdk	1.0.3
Python	one-msg-sdk	1.0.2
Java	io.1msg:sdk	1.0.2
Kotlin	io.1msg:sdk-kotlin	1.0.3
Scala	io.1msg:sdk-scala	1.0.3
C#	OneMsg.Sdk	2.0.1
Rust	one-msg-sdk	2.0.2
Ruby	one_msg_sdk	2.0.2
Go	github.com/1msg/1msg-sdk-go	v1.1.1
Swift	1msg/1msg-sdk-swift	1.1.1
PHP	1msg/sdk	1.1.1 (repo)
C++	one-msg-sdk	1.0.1 (repo)