API Locker

API Locker is an encrypted credential vault designed for developers to securely store and manage LLM API keys, service API keys, and OAuth credentials. It enables injecting credentials as environment variables at runtime—removing the need for .env files—and provides a secure, audit-trailed, and convenient way to manage secrets on multiple devices. Designed with both manual and programmatic access in mind, it also supports the Model Context Protocol (MCP), letting AI agents securely access and use vault credentials.