// MCP TOOL REFERENCE

MEMORY TOOLS

9 tools from the Memory MCP Server, categorised by risk level.

View the Memory policy → Token cost: 904 tokens →

// ALL 9 MEMORY TOOLS

READ 2 tools

Read read_graph Read the entire knowledge graph Read search_nodes Search for nodes in the knowledge graph based on a query

WRITE 4 tools

Write add_observations Add new observations to existing entities in the knowledge graph Write create_entities Create multiple new entities in the knowledge graph Write create_relations Create multiple new relations between entities in the knowledge graph. Relations should be in active voice Write open_nodes Open specific nodes in the knowledge graph by their names

DESTRUCTIVE 3 tools

Destructive delete_entities Delete multiple entities and their associated relations from the knowledge graph Destructive delete_observations Delete specific observations from entities in the knowledge graph Destructive delete_relations Delete multiple relations from the knowledge graph

// RUNNING THIS SERVER

The managed route: connect Memory through the PolicyLayer gateway — every tool call above is checked against your policy before it runs, with a full audit log.

DIRECT INSTALL (UNMANAGED) npx -y @modelcontextprotocol/server-memory

// FAQ

How many tools does the Memory MCP server have? +

The Memory MCP server exposes 9 tools across 3 categories: Read, Write, Destructive.

How do I enforce policies on Memory tools? +

Route the Memory server through the PolicyLayer gateway. Define allow, deny, or approval rules per tool in the dashboard — they are enforced on every call before it reaches the server.

What risk categories do Memory tools fall into? +

Memory tools are categorised as Read (2), Write (4), Destructive (3). Each category has a recommended default policy.

Let agents act without letting them run wild.

Route your MCP servers through PolicyLayer and every tool call is checked against your policy before it runs — allow, deny, or require approval. Per-identity grants. Full audit log. Live in minutes.

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4,600+ MCP servers and 31,000+ tools scanned and risk-classified.