Vestige is an agent skill from sundial-org/awesome-openclaw-skills. Cognitive memory system using FSRS-6 spaced repetition. Memories fade naturally like human memory. Use for persistent recall across sessions.
Its SKILL.md is about 1.1k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Education, covering Study guides and flashcards. The repository describes itself as: Top OpenClaw skills, with the most popular and useful ones.