list_refs
List all registered refs in the RefIndex, optionally filtered by entity name
This record as markdown: /tools/danielsimonjr-memory-mcp/list-refs.md
What list_refs does on Enhanced Knowledge Graph Memory Server
AI agents call list_refs to retrieve information from Enhanced Knowledge Graph Memory Server without modifying anything. It is typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Why list_refs is rated Low
This is a query operation that returns information about registered references in the RefIndex. It has no side effects, does not modify any data, and does not trigger external operations. The optional filtering parameter is a read-only constraint on the output. This is a standard Read category tool with low severity since it only exposes existing data without the ability to modify or destroy it.
From the tool's definition Tool name 'list_refs' and description 'List all registered refs in the RefIndex, optionally filtered by entity name' - purely retrieves/queries data with optional filtering. No modification, deletion, or execution occurs.
Attacks that exploit this kind of access
The rule that runs list_refs safely
PolicyLayer is an MCP gateway: it sits between your AI agents and Enhanced Knowledge Graph Memory Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For list_refs, this is the rule to start with:
list_refs is read-only, so it stays allowed. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect Enhanced Knowledge Graph Memory Server, apply this rule, and every list_refs call is checked against it from then on.
Questions about list_refs
List all registered refs in the RefIndex, optionally filtered by entity name. It is categorised as a Read tool in the Enhanced Knowledge Graph Memory Server MCP Server, which means it retrieves data without modifying state.
Register the Enhanced Knowledge Graph Memory Server MCP server in PolicyLayer and add a rule for list_refs: 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 Enhanced Knowledge Graph Memory Server. Nothing to install.
list_refs 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 list_refs 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 list_refs. 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.
list_refs is provided by the Enhanced Knowledge Graph Memory Server MCP server (danielsimonjr/memory-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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