PMB (Persistent Memory Bank)

What it does

PMB provides a robust, local-first memory layer for AI coding agents like Claude Code, Cursor, and Codex. It allows agents to store decisions, lessons, personal facts, and project structures in a single SQLite file on disk, ensuring continuity across restarts and model upgrades without relying on cloud services or API keys.

Tools

• prepare(message): Returns project context, lessons, and recent activity based on the current query.
• recall(query): Performs hybrid semantic and lexical search (BM25 + Vector) across all memories.
• record_keyed_fact: Stores specific facts associated with a key (e.g., user preferences).
• index_project: Scans and indexes the current codebase for structural awareness.
• index_pdf: Extracts and embeds content from PDF documents into the memory bank.
• mark_lesson_followed: Tracks whether a surfaced procedural rule was successfully applied.

Installation

{
  "mcpServers": {
    "pmb": {
      "command": "pmb",
      "args": []
    }
  }
}

Note: Requires pip install pmb-ai and running pmb setup first.

Supported hosts

Claude Desktop, Cursor, Codex, Windsurf, Gemini, VS Code, Zed, Continue