Gibber is a lightweight Model Context Protocol (MCP) server built with Express.js, designed to facilitate secure, end-to-end encrypted communication between AI models and agents. It integrates the Stanford Javascript Crypto Library (SJCL) to offer essential cryptographic functionalities such as key pair generation, shared secret derivation, and robust message encryption/decryption using AES-CCM. This enables LLM agents to exchange sensitive information securely, preventing man-in-the-middle attacks and ensuring privacy in their interactions.