知识图谱管理系统

# Check Node.js version
node --version  # Must be v22.0.0 or higher

npx @qty/memfs

# 1. Clone or download the project
cd MemFS

# 2. Install dependencies
npm install

# 3. Run server
node index.js

# Or with CLI args (recommended)
node index.js --memory-dir ~/my-knowledge --git-autocommit --duplicates --autogc

# Or via environment variables (legacy)
MEMORY_DIR=~/my-knowledge GITAUTOCOMMIT=true node index.js

{
  "mcpServers": {
    "memory": {
      "type": "local",
      "command": ["npx", "-y", "@qty/memfs"],
      "enabled": true
    }
  }
}

{
  "mcpServers": {
    "memory": {
      "command": "npx",
      "args": ["-y", "@qty/memfs"],
      "enabled": true
    }
  }
}

node index.js --memory-dir ~/my-knowledge --git-autocommit --duplicates --autogc

flowchart TD
    LLM["LLM"]
    ATT["Attention Mechanism"]
    MCP["MCP Protocol"]
    MEM["MemFS\nOn-demand structured data"]

    LLM --> ATT --> MCP --> MEM
    MEM -.-> |Returns results| LLM

{"type":"entity","name":"Weber","entityType":"person","definition":"German sociologist","observationIds":[1,2]}
{"type":"observation","id":1,"content":"Author of 'The Protestant Ethic'","createdAt":{"utc":"2026-02-08T13:53:07Z","timezone":"Asia/Shanghai"}}
{"type":"relation","from":"Weber","to":"Durkheim","relationType":"contemporary"}

// Default hybrid search
await searchNode("functionalism");  // BM25 + Fuzzy

// Traditional keyword search
await searchNode("functionalism", { basicFetch: true });

// Custom parameters
await searchNode("sociology", {
    limit: 15,          // Return count
    bm25Weight: 0.7,    // BM25 weight
    fuzzyWeight: 0.3,   // Fuzzy search weight
    minScore: 0.01      // Minimum relevance threshold
});

// Create two entities sharing the same observation
await createEntity([
  { name: "Zhang San", observations: ["Programmer"] },
  { name: "Li Si", observations: ["Programmer"] }
]);

// Under the hood: same observation ID is reused
{
  entities: [
    { name: "Zhang San", observationIds: [1] },
    { name: "Li Si", observationIds: [1] }
  ],
  observations: [
    { id: 1, content: "Programmer" }
  ]
}

// Update a shared observation
await updateNode({
  entityName: "Zhang San",
  observationUpdates: [
    { oldContent: "Programmer", newContent: "Senior Programmer" }
  ]
});

// Result: Zhang San gets new observation, Li Si keeps original
{
  observations: [
    { id: 1, content: "Programmer" },      // Li Si uses
    { id: 2, content: "Senior Programmer" } // Zhang San's new observation
  ]
}

{"type":"entity","name":"Weber","entityType":"person","definition":"German sociologist","definitionSource":"Wikipedia","observationIds":[1,2]}
{"type":"entity","name":"Durkheim","entityType":"person","definition":"French sociologist","definitionSource":"Wikipedia","observationIds":[3]}
{"type":"observation","id":1,"content":"Author of 'The Protestant Ethic'","createdAt":{"utc":"2026-02-08T13:53:07Z","timezone":"Asia/Shanghai"}}
{"type":"observation","id":2,"content":"Contemporary with Durkheim and Marx","createdAt":{"utc":"2026-02-08T14:00:00Z","timezone":"Asia/Shanghai"},"updatedAt":{"utc":"2026-02-09T10:30:00Z","timezone":"Asia/Shanghai"}}
{"type":"observation","id":3,"content":"Author of 'The Division of Labor in Society'","createdAt":{"utc":"2026-02-08T15:00:00Z","timezone":"Asia/Shanghai"}}
{"type":"relation","from":"Weber","to":"Durkheim","relationType":"contemporary"}

# Via CLI arg (recommended)
node index.js --memory-dir /path/to/data --git-autocommit

# Via environment variable
GITAUTOCOMMIT=true node index.js

auto-commit:[operationContext] at [utc:YYYY-MM-DDTHH:mm:ss.SSSZ] [tz:Asia/Shanghai]

auto-commit:[createEntity "Weber"] at [utc:2026-03-22T09:15:30.123Z] [tz:Asia/Shanghai]
auto-commit:[updateNode "Durkheim"] at [utc:2026-03-22T09:16:45.456Z] [tz:Asia/Shanghai]
auto-commit:[deleteRelation "Weber"→"Durkheim"] at [utc:2026-03-22T09:17:00.789Z] [tz:Asia/Shanghai]

await getConsole()
// Returns text content with buffered logs and Git commits prefixed by "[Git]"

git clone https://github.com/Qtgcy08/MemFS.git
cd MemFS
git checkout legacy

# Full test suite (29 tests, SSE skipped by default)
MEMORY_DIR=test_cache node test_mcp_full.mjs

# analyzeDuplicates dedup (standalone)
node test_mcp_dedup.mjs

# Hybrid search
MEMORY_DIR=test_cache node test_mcp_hybrid_search.mjs

# Git Sync tests
node test_gitsync.mjs

# SSE tests (opt-in)
TEST_SSE=true MEMORY_DIR=test_cache node test_mcp_full.mjs