A self-hosted persistent memory system for AI coding assistants, Friday is a FastAPI-based "cognitive memory" layer that plugs into editors and agent CLIs via the Model Context Protocol (MCP). It solves AI "amnesia" by persisting cross-session semantic memories, vector indexes, and a Neo4j knowledge graph so agents like Cursor, Claude, Antigravity, or custom Codex setups can share one unified brain. Core MCP tools include add_memory, add_fact, memory_search, and get_context; an auto-graph engine extracts entities from memories into Neo4j nodes and edges automatically. A live Neural Studio provides an Obsidian-style knowledge graph browser with filtering, CRUD, and an inspector, while layers combine Mem0, ChromaDB-style vector search, and Neo4j for contextual retrieval and structured facts.
Friday emphasizes practical self-hosting and low friction: Docker Compose boots the full stack, .env configuration wires in Mem0 and DeepSeek APIs, and a simple curl POST can store a persistent memory for immediate recall. Claimed benefits include dramatic token cost reduction (~8,000 → ~800 tokens per task) and much higher context-recall accuracy (~30% → ~94%), plus a versioned facts ledger and audit trail. The repo targets developers who want private, centralized memory for multi-agent workflows and supplies step-by-step MCP client configs and example integrations to make a shared brain across local and remote toolchains.
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