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Mnemon — Persistent Layered Memory for AI Agents MCP Server

@nikitacometa

代码仓库

基本信息

分类

记忆与知识

传输方式

stdio

作者

nikitacometa

提交者

Nikita

关于 Mnemon — Persistent Layered Memory for AI Agents MCP Server

Persistent 4-layer memory (episodic, semantic, procedural, resource) backed by SQLite FTS5. Fact versioning, Snowball stemming (EN+RU), BM25 ranking. Zero-cloud, single-file database. 7 MCP tools.

#memory#sqlite#persistent-memory#ai-agent#fts5#multilingual#knowledge-base

Mnemon — Persistent Layered Memory for AI Agents MCP Server 配置

使用下面的配置,将此服务器添加到你的 MCP 客户端。

{
  "mcpServers": {
    "mnemon-mcp": {
      "command": "mnemon-mcp"
    }
  }
}

Mnemon — Persistent Layered Memory for AI Agents MCP Server 工具

工具列表暂未提供

当前收录暂时没有可展示的工具列表，不代表服务没有工具。请查阅项目文档了解支持的能力。

工具是从 README 中自动提取的。维护者可以在 ## Tools 标题下列出工具,即可填充这部分内容。

概览

What is Mnemon — Persistent Layered Memory for AI Agents?

Mnemon — Persistent Layered Memory for AI Agents gives any MCP-compatible client (Claude Code, Cursor, Windsurf, or your own) a structured long-term memory backed by a single SQLite database on your machine. It uses a layered memory model (episodic, semantic, procedural, resource) with different lifetimes and access patterns, all without API keys, cloud services, or telemetry.

How to use Mnemon — Persistent Layered Memory for AI Agents?

Install globally via npm: npm install -g mnemon-mcp. Then configure the server in your MCP client’s configuration file. The server exposes seven MCP tools for storing, searching, updating, deleting, inspecting, exporting, and maintaining memory entries.

Key features of Mnemon — Persistent Layered Memory for AI Agents

  • Four memory layers with configurable lifetimes (decay, stable, rarely changes)
  • Seven MCP tools: add, search, update, delete, inspect, export, health
  • Full-text search (FTS5) with BM25 ranking and Snowball stemming
  • Optional vector search via OpenAI or Ollama embeddings with hybrid ranking
  • Fact versioning: version chains with superseding, full history via memory_inspect
  • Fully local: single SQLite database, no external services or API keys

Use cases of Mnemon — Persistent Layered Memory for AI Agents

  • Give AI agents persistent long-term memory across sessions
  • Store and retrieve user preferences, facts, and relationships
  • Maintain workflow rules, conventions, and procedural knowledge
  • Keep reference material and book notes with automatic decay
  • Log events and sessions for episodic recall

常见问题

1

What memory layers does Mnemon provide?

Episodic (events, sessions; decays with 30-day half-life), Semantic (facts, preferences; stable), Procedural (rules, workflows; rarely changes), and Resource (reference material; decays slowly over 90 days).

2

Does Mnemon require any cloud services or API keys?

No. It runs entirely locally with a single SQLite database. No external services, no API keys, no telemetry.

3

How does search work in Mnemon?

Search uses FTS5 with BM25 ranking, multi-word AND with progressive OR fallback, and Snowball stemmer for English and Russian. Optional vector search via OpenAI or Ollama embeddings uses hybrid ranking with Reciprocal Rank Fusion.

4

What are the system requirements for Mnemon?

Node.js ≥22. No other external dependencies.

5

How does Mnemon handle fact updates?

Updates can be performed in-place or as versioned replacements (superseding chain). Search always returns the latest version, while memory_inspect reveals the full version history. Deleting a memory reactivates its predecessor if any.

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