Use API keys to access APIs

This page describes how to use API keys to access Trusted Cloud by S3NS APIs and services that accept API keys.

Not all Trusted Cloud by S3NS APIs accept API keys to authorize usage. Review the documentation for the service or API that you want to use to determine whether it accepts API keys.

For information about creating and managing API keys, including restricting API keys, see Manage API keys.

Before you begin

Select the tab for how you plan to use the samples on this page:

C#

To use the .NET samples on this page in a local development environment, install and initialize the gcloud CLI, and then set up Application Default Credentials with your user credentials.

Install the Google Cloud CLI.
Configure the gcloud CLI to use your federated identity.

For more information, see Sign in to the gcloud CLI with your federated identity.
To initialize the gcloud CLI, run the following command:
```
gcloud init
```
Create local authentication credentials for your user account:
```
gcloud auth application-default login
```
If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

For more information, see Set up ADC for a local development environment in the Trusted Cloud authentication documentation.

C++

To use the C++ samples on this page in a local development environment, install and initialize the gcloud CLI, and then set up Application Default Credentials with your user credentials.

Install the Google Cloud CLI.
Configure the gcloud CLI to use your federated identity.

For more information, see Sign in to the gcloud CLI with your federated identity.
To initialize the gcloud CLI, run the following command:
```
gcloud init
```
Create local authentication credentials for your user account:
```
gcloud auth application-default login
```
If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

For more information, see Set up ADC for a local development environment in the Trusted Cloud authentication documentation.

Go

To use the Go samples on this page in a local development environment, install and initialize the gcloud CLI, and then set up Application Default Credentials with your user credentials.

Install the Google Cloud CLI.
Configure the gcloud CLI to use your federated identity.

For more information, see Sign in to the gcloud CLI with your federated identity.
To initialize the gcloud CLI, run the following command:
```
gcloud init
```
Create local authentication credentials for your user account:
```
gcloud auth application-default login
```
If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

For more information, see Set up ADC for a local development environment in the Trusted Cloud authentication documentation.

Node.js

To use the Node.js samples on this page in a local development environment, install and initialize the gcloud CLI, and then set up Application Default Credentials with your user credentials.

Install the Google Cloud CLI.
Configure the gcloud CLI to use your federated identity.

For more information, see Sign in to the gcloud CLI with your federated identity.
To initialize the gcloud CLI, run the following command:
```
gcloud init
```
Create local authentication credentials for your user account:
```
gcloud auth application-default login
```
If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

For more information, see Set up ADC for a local development environment in the Trusted Cloud authentication documentation.

Python

To use the Python samples on this page in a local development environment, install and initialize the gcloud CLI, and then set up Application Default Credentials with your user credentials.

Install the Google Cloud CLI.
Configure the gcloud CLI to use your federated identity.

For more information, see Sign in to the gcloud CLI with your federated identity.
To initialize the gcloud CLI, run the following command:
```
gcloud init
```
Create local authentication credentials for your user account:
```
gcloud auth application-default login
```
If an authentication error is returned, and you are using an external identity provider (IdP), confirm that you have signed in to the gcloud CLI with your federated identity.

For more information, see Set up ADC for a local development environment in the Trusted Cloud authentication documentation.

REST

To use the REST API samples on this page in a local development environment, you use the credentials you provide to the gcloud CLI.

After installing the Google Cloud CLI, sign in to the gcloud CLI with your federated identity and then initialize it by running the following command:

gcloud init

For more information, see Authenticate for using REST in the Trusted Cloud authentication documentation.

Using an API key with REST

To include an API key with a REST API call, use the x-goog-api-key HTML header.

If you can't use the HTTP header, you can use the key query parameter. However, this method includes your API key in the URL, exposing your key to URL scans.

Using an API key with client libraries

When you use API keys in your applications, ensure that they are kept secure during both storage and transmission. Publicly exposing your API keys can lead to unexpected charges on your account. For more information, see Best practices for managing API keys.

What's next

See an overview of authentication methods.
Learn more about the API Keys API.