claude-subconscious

Claude Subconscious is a Claude Code plugin, built with the Letta Code SDK in TypeScript, that addresses the session amnesia problem in Claude Code by running a persistent background agent alongside active coding sessions. After each Claude Code response, the plugin forwards the session transcript asynchronously to a Letta agent, which uses Read, Grep, and Glob tools to explore the codebase, optionally searches the web, and updates its own persistent memory. Before each subsequent prompt or tool use, that agent injects guidance directly into stdout, functioning as a whisper rather than blocking the workflow. A notable feature is support for Letta's Conversations API, which allows a single Letta agent to serve multiple Claude Code sessions in parallel while sharing memory across all of them. Configuration options include a "whisper" mode that surfaces only agent messages, a "full" mode that adds memory blocks, and a self-hosting option via a custom LETTA_BASE_URL. The project is labeled a demo application, with the production-ready equivalent being the separate Letta Code CLI. Developers who frequently work across long or interrupted Claude Code sessions stand to benefit most.

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