Zouroboros Memory

Production-grade persistent memory for AI agents. Hybrid SQLite + vector search, decay classes, episodic memory, cognitive profiles, and MCP server.

Usage

Install: npm install zouroboros-memory

CLI

npx zouroboros-memory --help
npx zouroboros-memory init
npx zouroboros-memory store --entity user --key name --value "Alice" --decay permanent
npx zouroboros-memory search "project preferences" --limit 5
npx zouroboros-memory stats

MCP Server

Add to your .mcp.json:

{
  "servers": {
    "memory": {
      "command": "npx",
      "args": ["zouroboros-memory-mcp", "--db-path", "~/.zouroboros/memory.db"]
    }
  }
}

Programmatic API

import { init, storeFact, searchFacts, searchFactsHybrid, getStats } from 'zouroboros-memory';
import type { MemoryConfig } from 'zouroboros-memory';

const config: MemoryConfig = {
  enabled: true,
  dbPath: '~/.zouroboros/memory.db',
  vectorEnabled: false,
  ollamaUrl: 'http://localhost:11434',
  ollamaModel: 'nomic-embed-text',
  autoCapture: false,
  captureIntervalMinutes: 30,
  graphBoost: true,
  hydeExpansion: false,
  decayConfig: { permanent: Infinity, long: 365, medium: 90, short: 30 },
};

init(config);

// Store a fact
await storeFact({ entity: 'user', key: 'preference', value: 'dark mode' }, config);

// Keyword search
const results = searchFacts('dark mode', { limit: 5 });

// Hybrid search (RRF fusion of keyword + vector)
const hybridResults = await searchFactsHybrid('user preferences', config, { limit: 10 });

MCP Tools

Tool	Description
memory_store	Store a fact with optional decay class
memory_search	Keyword or hybrid search
memory_episodes	Create/search episodic memories
cognitive_profile	Get/update entity cognitive profiles
memory_graph	Query entity relationship graph
memory_procedures	Query stored workflow procedures
memory_stats	Database statistics
memory_delete	Delete a fact by ID
memory_prune	Remove expired facts

Decay Classes

Class	TTL
permanent	Never expires
long	365 days
medium	90 days (default)
short	30 days