keybridge: Secure WebAuthn Bridge for npm Publishing

Overview

keybridge provides a streamlined and secure way to publish npm packages directly from agents using only Touch ID for approval. The process ensures that privacy is maintained, as nothing else is displayed on the screen during publishing.

Features

• Touch ID Approval: Publishes require only a single Touch ID confirmation, enhancing user security without cluttering the interface.
• macOS Compatibility: Designed exclusively for macOS, it leverages the Secure Enclave for enhanced security while using WKWebView for the WebAuthn verification process.
• Agent-Friendly: Ideal for automated environments, where CI/CD systems or agents like Claude Code can initiate npm publish commands while user intervention is limited to the Touch ID approval.

Functionality

Using keybridge, users can easily login, enroll security keys, and publish packages:

npx keybridge login      # Log in to npmjs.com
npx keybridge enroll     # Add your keybridge security key
npx keybridge publish    # Publish packages securely

The system automatically handles session expiration and ensures tokens are managed securely across multiple accounts and profiles. Each npm account has its own browser profile, preventing session confusion when switching accounts.

Why Choose keybridge?

As npm transitions to 2FA requirements for package publishing, keybridge embodies a crucial tool for developers needing secure, efficient publishing without sacrificing usability. Its design prioritizes user interaction only when absolutely necessary, focusing on a seamless experience.

Use Cases

• Local Development: Directly publish packages while developing on macOS, enhancing workflow without compromising security.
• Automated Workflows: Integrate with CI/CD pipelines for secure, automated package publishing with a simple approval step.
• Team Project Management: Manage multiple npm accounts effortlessly, ensuring that the right credentials are used for each project.

Additional Highlights

• Invisible Ceremony: The validation process is completed in a hidden interface, with only the Touch ID dialog visible.
• Hardware Security: The signing key is stored in the Secure Enclave, providing a robust security model where every action requires explicit user presence through Touch ID.
• Granular Access Tokens: Users can configure per-account access tokens for extended functionality without compromising security.

Conclusion

Overall, keybridge serves as a powerful tool for developers needing to publish npm packages securely while reducing friction in their workflows. Its focus on security through User Verification, combined with the convenience of automated setups, represents a significant advancement in package publishing processes.