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Api Key Chain

Tests API keys directly from the browser to provider endpoints, with no intermediary server processing, logging, or storage.

Launch screenshots from Product Hunt, Jul 2026

A browser-based tool for testing API keys directly against provider endpoints, ensuring keys never leave the user's browser unencrypted. It serves developers and IT teams who need to validate keys for services like OpenAI, Stripe, and GitHub without exposing them to intermediary servers. The tool is open source, offers zero-knowledge encryption, and provides a free tier with premium features like saved keys and health checks.

Key features

  • Test API keys instantly
  • Bulk testing of API keys
  • Support for multiple providers
  • Zero-knowledge encryption
  • AES-256-GCM encryption
  • PBKDF2-SHA256 key derivation
  • Web Crypto API integration
  • Saved keys encrypted vault
  • Auto-validate keys on schedule
  • Real-time provider health monitoring
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  • API
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ICP
  • Software developers
  • Engineering teams
  • IT teams