How can I restrict OpenAI API key access to specific IP addresses or domains

Restricting API Key Access to Specific IP Addresses

1. Use IP Allowlisting:
- OpenAI API Key:
- The number of IP addresses that can be used by a single user account can be reduced. Please refer to this documentation for more details[2].

2. Implement IP Filtering:
- Web-Server Level:
- Implement IP filtering at the web-server level using tools like Apache's access control or Linux's iptables to only allow specific IP addresses to access the API[4].

Restricting API Key Access to Specific Domains

1. Use Domain Restriction:
- OpenAI API Key:
- Create a new API key with restricted permissions and specify the domains you want to restrict access to. This can be done by selecting specific API endpoints or restricting access to certain domains[3].

2. Implement Domain Filtering:
- Web-Server Level:
- Implement domain filtering at the web-server level using tools like Apache's access control or Linux's iptables to only allow requests from specific domains[4].

Additional Security Measures

1. Store API Keys Securely:
- Environment Variables:
- Store API keys securely using environment variables on your web server or cloud platform[3].

2. Use Middleware API:
- Server-Side Solution:
- Implement a server-side solution using a middleware API with authentication to handle API requests securely[3].

3. Change API Keys Regularly:
- Stop-Gap Solution:
- Change API keys regularly to minimize the impact of potential security breaches[3].

By following these steps, you can effectively restrict OpenAI API key access to specific IP addresses or domains, ensuring the security and integrity of your API usage.