#OAuth

Heirmos

Heirmos is an MCP-based cloud memory service designed to enable multiple AI assistants to share a single, unified memory. With just one OAuth connection, you can access the same memory across different AIs such as Claude, ChatGPT, Grok, Gemini, and Codex. This ensures that context built in one AI seamlessly carries over to others and subsequent sessions. We created Heirmos to eliminate the frustration of repeatedly providing the same background information every time you switch AI tools or a session ends. It offers 'persistent memory' for power users who frequently navigate between various AI platforms. Implemented with MCP protocol, OAuth, and Streamable HTTP, Heirmos is a solo-developed project currently available for free.