Read the entire knowledge graph
AI agents call mcp_memory_read_graph to retrieve information from MCP Memory Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves/queries data from the knowledge graph without side effects. It performs a read-only operation that does not create, modify, delete, or execute external operations. The verb 'read' and the lack of any mutating semantics place it squarely in the Read category. Severity is low because reading stored memory carries minimal risk compared to modification or deletion of data.
From the tool's definition Tool name 'read_graph' and description 'Read the entire knowledge graph' explicitly indicate a retrieval operation with no modification or deletion.
Risk signalsBulk/mass operation — affects multiple targets
Attacks that exploit this kind of access
Read the entire knowledge graph. It is categorised as a Read tool in the MCP Memory Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Memory Server MCP server in PolicyLayer and add a rule for mcp_memory_read_graph: allow, deny, rate-limit, or require approval. Point your MCP client at the PolicyLayer proxy URL and the rule is enforced on every call, before it reaches MCP Memory Server. Nothing to install.
mcp_memory_read_graph is a Read tool with low risk. Read-only tools are generally safe to allow by default.
Yes. Add a rate_limit block to the mcp_memory_read_graph rule in your PolicyLayer policy. For example, setting max: 10 and window: 60 limits the tool to 10 calls per minute. Rate limits are tracked per agent session and reset automatically.
Set action: deny in the PolicyLayer policy for mcp_memory_read_graph. The AI agent will receive a policy violation error and cannot call the tool. You can also include a reason field to explain why the tool is blocked.
mcp_memory_read_graph is provided by the MCP Memory Server MCP server (jessefreitas/mcp_memory). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
mcp_memory_read_graph is one line of MCP Memory Server's registry record.
The record carries the whole server: verified identity, auth posture, risk grade, every tool classified, recommended policy — re-checked continuously.
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