/peek is a new slash command to use subagents to check out your other sessions (github.com)

A new slash command for Claude Code, called /peek, allows users to access and extract relevant information from previous sessions without losing their current workflow or overwhelming their context window. This feature addresses a common struggle in AI interactions, where users often face challenges remembering solutions or discussions from past sessions. Instead of resuming an old session or sifting through complete transcripts, /peek helps users efficiently identify pertinent parts of prior chats, significantly enhancing productivity. The technical design of /peek incorporates several architectural choices that optimize token efficiency and deliver high-value information. By focusing on user prompts, the command presents a concise list of recent sessions, showcasing the last user prompt as a navigation tool. A dedicated subagent retrieves the relevant excerpts, ensuring that users receive a digest that prioritizes significant content while minimizing cognitive load. This innovation not only streamlines interaction but also reinforces the idea of maintaining context in AI/ML work, marking a noteworthy advancement in user experience within AI tools.