What authentication method does RoboHash use?

RoboHash primarily uses API keys for authentication. These keys are unique identifiers that you include with your API requests.

How do I get my RoboHash API key?

You can obtain your API key by signing up for a RoboHash account and navigating to the 'API Keys' or 'Developer Settings' section within your user dashboard.

Is RoboHash API key authentication secure?

API key authentication is moderately secure. Its security largely depends on how securely you store and manage your API key. Always use HTTPS and avoid exposing the key in client-side code.

Can I use OAuth 2.0 with RoboHash?

No, RoboHash does not currently support OAuth 2.0. The primary authentication mechanism is API keys.

Where should I store my RoboHash API key?

For server-side applications, store your API key in environment variables or a secrets management service. Never hardcode it into your source code, especially for public-facing or client-side applications.

How do I include the API key in a RoboHash request?

You include the API key as a query parameter named 'api_key' in your HTTP GET request, appended to the base URL and any other parameters.

What happens if my API key is compromised?

If your API key is compromised, unauthorized parties could use your RoboHash account, potentially exceeding your usage limits. You should immediately revoke the compromised key and generate a new one from your RoboHash account portal.

RoboHash Authentication: API Key Access (2026)

Authentication overview

The RoboHash API provides a service for generating unique, deterministic images based on any input string. To manage access, track usage, and differentiate between free and paid service tiers, RoboHash implements an API key-based authentication system. This method requires developers to include a unique key with their API requests, which the RoboHash server then validates to permit access and apply any associated usage quotas or features RoboHash API documentation. API keys are a common authentication mechanism for web services, offering a balance of simplicity and access control for many applications Google Cloud API key authentication.

While API keys offer a straightforward approach to identifying clients, it is important to handle them securely to prevent unauthorized access to your account and potential misuse of your allocated resources. RoboHash's system is designed to provide a lightweight integration experience, focusing on easy access for developers who need to quickly implement placeholder or avatar generation features.

Supported authentication methods

RoboHash primarily supports API key authentication. This method involves generating a unique string from your RoboHash account and then including it in your API requests. The platform does not currently offer more complex authentication flows such as OAuth 2.0 or mutual TLS (mTLS).

Method	When to Use	Security Level
API Key	Accessing the core RoboHash image generation API; tracking usage.	Moderate (requires secure key handling by the client).

API keys are suitable for server-to-server communication or applications where the risk of key exposure is mitigated through secure environment variables or backend storage. They are less suitable for client-side applications where keys could be easily extracted by end-users.

Getting your credentials

To obtain your RoboHash API key, follow these steps:

Create a RoboHash Account: Navigate to the RoboHash homepage and sign up for a new account if you do not already have one. This typically involves providing an email address and creating a password.
Access Your Dashboard: After successful registration and login, you will be directed to your user dashboard or account management portal.
Locate API Key Section: Within the dashboard, look for a section typically labeled "API Keys," "Developer Settings," or similar. The exact nomenclature may vary but the purpose is to manage your API credentials.
Generate or Retrieve Key: If you are a new user, you may need to generate your first API key. Existing users will find their active API key(s) listed. Copy this key securely.
Store Securely: Once you have your API key, it is crucial to store it securely. Avoid hardcoding it directly into client-side code or public repositories. For server-side applications, use environment variables or a secrets management service.

The RoboHash documentation provides specific instructions on navigating the user interface to find and manage your API keys, ensuring you have the most up-to-date guidance.

Authenticated request example

RoboHash API requests are made via HTTP GET, with the API key typically included as a query parameter. The core functionality involves appending a string to the base URL, which RoboHash then hashes to generate a unique image. The API key is appended to this request.

Here's an example using curl to generate a RoboHash image with an API key:

curl "https://robohash.org/set_set1/ANY_STRING.png?size=300x300&bgset=bg1&api_key=YOUR_API_KEY_HERE"

In this example:

https://robohash.org/set_set1/ANY_STRING.png is the base URL for generating an image from the 'set1' category, using 'ANY_STRING' as the input.
?size=300x300&bgset=bg1 are standard parameters for image dimensions and background set.
&api_key=YOUR_API_KEY_HERE is where you replace YOUR_API_KEY_HERE with your actual RoboHash API key.

Ensure that your API key is correctly appended as the api_key query parameter for all authenticated requests. Failure to include a valid key may result in rejected requests or usage being counted against an unauthenticated free tier, if applicable.

Security best practices

Securing your RoboHash API key is essential to prevent unauthorized access to your account and to protect your service limits. Follow these best practices:

Never Hardcode API Keys: Avoid embedding API keys directly into your application's source code, especially for client-side applications. Hardcoded keys can be easily discovered through reverse engineering or by inspecting web pages. Instead, use environment variables for server-side applications.
Use Environment Variables: For applications deployed on servers, store your API key as an environment variable. This keeps the key separate from your source code and makes it easier to manage credentials across different deployment environments (development, staging, production). Many cloud providers offer secure methods for managing environment variables AWS Access Key best practices.
Server-Side Access Only: If possible, restrict API key usage to your backend server. This means your client-side application requests images through your server, which then makes the authenticated call to RoboHash. This adds a layer of abstraction and prevents your API key from being exposed to end-users.
Regularly Rotate Keys: Periodically generate new API keys and revoke old ones. This practice reduces the window of opportunity for a compromised key to be used maliciously. Check your RoboHash account portal for key rotation options.
Monitor Usage: Keep an eye on your API usage statistics within your RoboHash dashboard. Unusual spikes in usage might indicate a compromised key or unauthorized activity.
Restrict by IP (If Available): If RoboHash offers IP whitelisting for API keys, configure it to allow requests only from your known server IP addresses. This provides an additional layer of security by rejecting requests originating from unknown locations.
Use HTTPS: All communication with the RoboHash API should occur over HTTPS (TLS). This encrypts the data in transit, protecting your API key and other request parameters from interception by malicious actors. RoboHash endpoints are served over HTTPS by default.
Implement Least Privilege: If RoboHash were to introduce different types of API keys with varying permissions, always use the key with the minimum necessary permissions for the task at hand. While RoboHash currently uses a single key type, this is a general best practice for API security.

Adhering to these principles helps maintain the security of your RoboHash integration and protects your account from potential abuse.