Show HN: Recall: Give Claude perfect memory with Redis-backed persistent context (www.npmjs.com)

Recall is an open-source "brain extension" for Anthropic Claude that gives the assistant persistent, Redis-backed memory so context survives window limits and session restarts. It stores directives, decisions, code patterns, preferences and session snapshots, automatically retrieves relevant context during new conversations, and organizes memories by workspace (with optional global/hybrid scope). For teams and power users this solves the recurring problem of lost state and repetitive prompts, enabling long-term project context, reproducible design decisions, and reusable templates across Claude Code and Claude Desktop. Technically, Recall runs as an MCP (Model Context Protocol) server (Node.js 18+) and uses Redis (local or cloud) as the backing store; install via npx, global npm, or from source and configure REDIS_URL and ANTHROPIC_API_KEY. It exposes fine-grained memory tools (store/update/delete, semantic/fuzzy/regex search, recall_relevant_context, analyze_and_remember, versioning, relationships, templates, export/import, rollback) and workspace/global controls. Important security and compliance implications: memories can contain secrets, PII, or proprietary IP, so operators must secure Redis (auth, TLS, network rules), control access, and follow data-retention and regulatory policies—the author disclaims liability for breaches. In short, Recall is a practical, feature-rich persistence layer for Claude that boosts continuity and reproducibility, but requires careful operational security.