List all entities extracted from a document, grouped by type (hardware, memory_address, instruction, person, company, product, concept). Great for getting an overview of what a document covers.
AI agents call list_entities to retrieve information from TDZ C64 Knowledge without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and displays metadata already extracted from indexed documents. It performs no write, deletion, execution of code, or financial operations. The blast radius of misuse is negligible—an agent listing entities cannot harm the knowledge base, execute code, or cause irreversible changes. Classification as Read is appropriate.
From the tool's definition Tool description states it 'List[s] all entities extracted from a document' — a retrieval operation with no modification or side effects.
Attacks that exploit this kind of access
List all entities extracted from a document, grouped by type (hardware, memory_address, instruction, person, company, product, concept). Great for getting an overview of what a document covers. It is categorised as a Read tool in the TDZ C64 Knowledge MCP Server, which means it retrieves data without modifying state.
Register the TDZ C64 Knowledge MCP server in PolicyLayer and add a rule for list_entities: 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 TDZ C64 Knowledge. Nothing to install.
list_entities 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_entities 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_entities. 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_entities is provided by the TDZ C64 Knowledge MCP server (michaeltroelsen/tdz-c64-knowledge). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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