Let's get started

This is the open beta of the Fermyon Cloud. For more info about the limitations and support, please see read the FAQ.

This guide will get you up and running in the Fermyon Cloud in less than two minutes. To do so, we’ve already made a Spin application ready for you to deploy to the cloud.

Install Spin

First, you need to have Spin installed on your computer. Use the command below to install the latest version of Spin.

curl -fsSL https://developer.fermyon.com/downloads/install.sh | bash

This command downloads and unpacks the latest Spin binary in the current directory. You can now run spin using the command ./spin.

Learn more

Spin is an open-source project used for creating, developing, building, running, and deploying Spin applications. It is both a CLI tool and a runtime, and provides SDKs for a variety of programming languages, including, but not limited to, Rust, TinyGo, and C#.

The Spin project provides installers that are supported on Linux (amd64), macOS (amd64 and arm64), and Windows(amd64).

The Spin documentation is a good starting place to learn more about using the framework to develop applications.

Log in to the Fermyon cloud

Now, let’s log in to the Fermyon Cloud. You will be using your GitHub user account to sign in.

$ ./spin login

Copy your one-time code:


...and open the authorization page in your browser:


Waiting for device authorization...
Device authorized!

This command will generate an authentication code for your current device to be authorized against the Fermyon Cloud. Follow the instructions in the prompt to complete the authorization process.

Learn more

The default behavior of spin login is to authenticate with the Fermyon Cloud. The command can authenticate against any instance of the Fermyon Platform.

Clone the quickstart repo

To make this easy, we’ve already compiled a Webassembly module and created a Spin application for you to deploy.

Let’s go ahead and clone the https://github.com/fermyon/cloud-start repository to your computer to retrieve that application.

git clone https://github.com/fermyon/cloud-start && cd cloud-start

This command clones the repository into a local directory named cloud-start, and then enters that directory.

Learn more

To write your Spin application, you would start by using the command spin new [template name] [project name]. This gives you the option to select a template based on your preference of programming language and trigger for your module - e.g., spin new rust-http my_rust_http_trigger.

The Spin quickstart guides you through creating a Spin application from scratch.

Deploy the application

Let’s deploy the application

../spin deploy

The ../spin command will run using the Spin binary in the parent directory of the current path and read the Spin application definition file spin.toml in the current directory to know what application to deploy.

Learn more

Deploying a Spin application to the Fermyon Cloud includes packaging the application and all the required files, uploading it to a Bindle registry, as well as instantiating the application on the cloud.

You can learn more about the deployment process here.


This is what a successful Spin application deployment on Fermyon Cloud looks like:

Uploading cloud_start version 0.1.0+XXXXXXXX...
Waiting for application to become ready... ready
Available Routes:
  cloud-start: https://cloud-start-XXXXXXXX.fermyon.app (wildcard)

You can CTRL+Click on the link in the terminal to visit the web application you just deployed.

Congratulations, you’ve now deployed your first Spin application to the Fermyon Cloud!

Next Steps

Did we miss something?

Let us know how we can improve this project, or contribute an edit to this page. We really appreciate your feedback, to help us build better tools.