Memory (Reference)

Memory (Reference) MCP Server

Knowledge graph-based persistent memory system.

MCP Info

Attribute	Details
Docker Image	mcp/memory
Author	modelcontextprotocol
Repository	https://github.com/modelcontextprotocol/servers

Image Building Info

Attribute	Details
Dockerfile	https://github.com/modelcontextprotocol/servers/blob/b4ee623039a6c60053ce67269701ad9e95073306/src/memory/Dockerfile
Commit	`b4ee623039a6c60053ce67269701ad9e95073306`
Docker Image built by	Docker Inc.
Docker Scout Health Score	Docker Scout Health Score
Verify Signature	`COSIGN_REPOSITORY=mcp/signatures cosign verify mcp/memory --key https://raw.githubusercontent.com/docker/keyring/refs/heads/main/public/mcp/latest.pub`
Licence	MIT License

Available Tools (9)

Tools provided by this Server	Short Description
`add_observations`	Add new observations to existing entities in the knowledge graph
`create_entities`	Create multiple new entities in the knowledge graph
`create_relations`	Create multiple new relations between entities in the knowledge graph.
`delete_entities`	Delete multiple entities and their associated relations from the knowledge graph
`delete_observations`	Delete specific observations from entities in the knowledge graph
`delete_relations`	Delete multiple relations from the knowledge graph
`open_nodes`	Open specific nodes in the knowledge graph by their names
`read_graph`	Read the entire knowledge graph
`search_nodes`	Search for nodes in the knowledge graph based on a query

Tools Details

Tool: `add_observations`

Add new observations to existing entities in the knowledge graph

Parameters	Type	Description
`observations`	`array`

Tool: `create_entities`

Create multiple new entities in the knowledge graph

Parameters	Type	Description
`entities`	`array`

Tool: `create_relations`

Create multiple new relations between entities in the knowledge graph. Relations should be in active voice

Parameters	Type	Description
`relations`	`array`

Tool: `delete_entities`

Delete multiple entities and their associated relations from the knowledge graph

Parameters	Type	Description
`entityNames`	`array`	An array of entity names to delete

Tool: `delete_observations`

Delete specific observations from entities in the knowledge graph

Parameters	Type	Description
`deletions`	`array`

Tool: `delete_relations`

Delete multiple relations from the knowledge graph

Parameters	Type	Description
`relations`	`array`	An array of relations to delete

Tool: `open_nodes`

Open specific nodes in the knowledge graph by their names

Parameters	Type	Description
`names`	`array`	An array of entity names to retrieve

Tool: `read_graph`

Read the entire knowledge graph

Tool: `search_nodes`

Search for nodes in the knowledge graph based on a query

Parameters	Type	Description
`query`	`string`	The search query to match against entity names, types, and observation content

Use this MCP Server

{
  "mcpServers": {
    "memory": {
      "command": "docker",
      "args": [
        "run",
        "-i",
        "--rm",
        "-v",
        "/local-directory:/local-directory",
        "mcp/memory"
      ]
    }
  }
}

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