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Web Development
Vercel Blog·Feb 23·5 min read
Safely inject credentials in HTTP headers with Vercel Sandbox
TL;DR
Web applications often face security risks when handling sensitive credentials in HTTP headers. Vercel Sandbox was developed to safely inject these credentials without exposing them to potential threats.
✦ Why It Matters
Engineers can use Vercel Sandbox to securely manage and test credentials in their applications.
Key Takeaways
- Use environment variables to store sensitive API keys securely.
- Define network policies to control access to external services.
- Inject credentials into HTTP headers without exposing them in code.
- Lock down network access after executing untrusted code.
How It Works
Vercel Sandbox allows developers to create a controlled environment where they can define network policies. These policies specify which domains can receive requests and how headers are transformed.
By injecting API keys into the headers dynamically, the application can interact with services like AI Gateway and GitHub without hardcoding sensitive information. After the necessary operations, the sandbox can restrict all further network access, enhancing security.