claude-memory-mcp

# Memory MCP [](https://www.npmjs.com/package/@whenmoon-afk/memory-mcp) [](https://opensource.org/licenses/MIT) Local, persistent memory for Claude Desktop and MCP-compatible AI assistants. > _Part of the [Substratia](https://substratia.io) memory infrastructure ecosystem._ A lightweight MCP server that gives your AI durable, searchable memory — entirely on your machine. Built with TypeScript, SQLite + FTS5, and minimal dependencies. ## Quick Start ### Claude Desktop Download `memory-mcp.mcpb` from [GitHub Releases](https://github.com/whenmoon-afk/claude-memory-mcp/releases) and double-click to install. ### Claude Code ```bash claude plugin install github:whenmoon-afk/claude-memory-mcp ``` <details> <summary><strong>Alternative: Manual JSON Config</strong></summary> Add to your Claude Desktop config file: **macOS**: `~/Library/Application Support/Claude/claude_desktop_config.json` **Linux**: `~/.config/Claude/claude_desktop_config.json` **Windows**: `%APPDATA%/Claude/claude_desktop_config.json` ```json { "mcpServers": { "memory": { "command": "npx", "args": ["-y", "github:whenmoon-afk/claude-memory-mcp"] } } } ``` Windows may need `"command": "cmd", "args": ["/c", "npx", "-y", "github:whenmoon-afk/claude-memory-mcp"]` </details> After installation, **restart Claude Desktop** (quit and reopen). ## Tools | Tool | Description | | --------------- | ------------------------------------------------------------ | | `memory_store` | Store a memory with auto-summarization and entity extraction | | `memory_recall` | Search memories with token-aware loading | | `memory_forget` | Soft-delete a memory (preserves audit trail) | ## Features - FTS5 full-text search (fast, no embeddings needed) - Token budgeting for context-aware responses - Automatic entity extraction and summarization - Soft deletes with provenance tracking - Hybrid relevance scoring (recency + importance + frequency) ## Environment Variables | Variable | Default | Description | | ------------------ | ----------------- | ------------------------- | | `MEMORY_DB_PATH` | Platform-specific | Database file location | | `DEFAULT_TTL_DAYS` | `90` | Default memory expiration | ## Troubleshooting ### Tools not appearing in Claude Desktop? 1. Restart Claude Desktop completely (quit and reopen) 2. Verify config file syntax is valid JSON 3. Check that Node.js 18+ is installed: `node --version` ### "Connection closed" on Windows? Windows requires either: - The `cmd /c` wrapper method (see Windows config above), OR - The full path to `npx.cmd` (e.g., `C:\Program Files\nodejs\npx.cmd`) ### Getting stale cached versions? The `npx github:` method bypasses npm cache. Alternatively: - Clear npm cache: `npm cache clean --force` - Use global install for version control ### Slow startup with github: method? First run requires downloading and installing dependencies (can take 30+ seconds). Subsequent runs are faster but still fetch from GitHub. For faster startup, use the global install method. ## Dependencies - `@modelcontextprotocol/sdk` - MCP protocol implementation - `better-sqlite3` - Fast native SQLite with FTS5 ## Links - **npm**: https://www.npmjs.com/package/@whenmoon-afk/memory-mcp - **GitHub**: https://github.com/WhenMoon-afk/claude-memory-mcp - **Issues**: https://github.com/WhenMoon-afk/claude-memory-mcp/issues ## Related Projects Part of the **Substratia** memory infrastructure ecosystem: - **[momentum](https://github.com/WhenMoon-afk/momentum)** - Instant context recovery (<5ms) for Claude Code - **[AgentForge](https://substratia.io/builder)** - Visual drag-and-drop agent config builder - **[Substratia](https://substratia.io)** - Memory infrastructure for AI ## Support - [GitHub Issues](https://github.com/WhenMoon-afk/claude-memory-mcp/issues) - Bug reports & feature requests ## Privacy **Local-only**: All memories are stored locally on your machine. No data is sent anywhere. Zero telemetry. ## Disclaimer This project is provided as-is. It is actively maintained but may have breaking changes between minor versions. ## License MIT