claudeindex
Plugin

historian

Episodic memory layer. At SessionEnd, chunks and sanitizes the session transcript and stores chunks under $ONLOOKER_DIR/historian/<project-key>/sessions/ (default $HOME/.onlooker). On UserPromptSubmit, embeds the prompt and performs similarity retrieval over stored chunks to surface relevant past context. Requires the ecosystem plugin.

Installation

1

Add the marketplace

/plugin marketplace add onlooker-community/ecosystem
2

Install plugins

/plugin

Run these commands in Claude Code to add this plugin to your environment. The marketplace must be added before you can install its plugins.