Memory MCP Server

Provides persistent memory capabilities through a knowledge graph stored in a local JSON file. Enables AI agents to create, read, update, and delete entities and their relationships. Useful for maintaining context across conversations, storing user preferences, and building structured knowledge bases that persist between sessions.

{
  "mcpServers": {
    "memory": {
      "command": "npx",
      "args": [
        "-y",
        "@modelcontextprotocol/server-memory"
      ]
    }
  }
}

{
  "type": "object",
  "required": [
    "entities"
  ],
  "properties": {
    "entities": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "name": {
            "type": "string"
          },
          "entityType": {
            "type": "string"
          },
          "observations": {
            "type": "array",
            "items": {
              "type": "string"
            }
          }
        }
      },
      "description": "Array of entities to create"
    }
  }
}

{
  "type": "object",
  "required": [
    "relations"
  ],
  "properties": {
    "relations": {
      "type": "array",
      "items": {
        "type": "object",
        "properties": {
          "to": {
            "type": "string"
          },
          "from": {
            "type": "string"
          },
          "relationType": {
            "type": "string"
          }
        }
      },
      "description": "Array of relations to create"
    }
  }
}

{
  "type": "object",
  "required": [
    "query"
  ],
  "properties": {
    "query": {
      "type": "string",
      "description": "Search query to match against entity names and observations"
    }
  }
}

{
  "type": "object",
  "required": [
    "names"
  ],
  "properties": {
    "names": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Array of entity names to retrieve"
    }
  }
}

{
  "type": "object",
  "required": [
    "entityNames"
  ],
  "properties": {
    "entityNames": {
      "type": "array",
      "items": {
        "type": "string"
      },
      "description": "Names of entities to delete"
    }
  }
}