Claude Code Memory: Persistent Memory Across Sessions (2026)

Supermemory is a Claude Code plugin designed to provide persistent, evolving memory across coding sessions, addressing the need to repeatedly supply project details, technical constraints, and personal preferences. Installed through Claude Code’s plugin marketplace, it automatically captures relevant conversations and tool activity, selectively recalls information before prompts, separates shared project knowledge from personal memory, and offers commands for indexing codebases, configuring projects, and managing sessions. Its approach complements rather than replaces CLAUDE.md files, which remain useful for fixed rules while persistent memory records changing decisions, work context, coding style, and past solutions. The system uses “hybrid memory” to extract and update facts over time rather than relying only on similarity-based retrieval, and it claims a 95% score with aggregation on the LongMemEval benchmark. Unlike the Supermemory MCP integration, the plugin can automatically inject a user profile at session start and capture interactions without depending on Claude to invoke tools, while also supporting self-hosted local operation for users who want data to remain on their own machines.

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