List available documents in the document directory.
AI agents call list_documents to retrieve information from MCP Document Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries information (document metadata) without creating, modifying, deleting, or executing any operations. It has no side effects and represents a standard enumeration operation. The low severity reflects minimal blast radius—an AI agent listing documents poses negligible risk even if misused, as no data is altered or actions triggered.
From the tool's definition Tool is named 'list_documents' and explicitly described as listing available documents in the document directory. The server description emphasizes 'read-only access' and the tool performs no side effects beyond retrieving metadata about documents.
Attacks that exploit this kind of access
List available documents in the document directory. It is categorised as a Read tool in the MCP Document Server MCP Server, which means it retrieves data without modifying state.
Register the MCP Document Server MCP server in PolicyLayer and add a rule for list_documents: 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 Document Server. Nothing to install.
list_documents 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_documents 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_documents. 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_documents is provided by the MCP Document Server MCP server (watsona4/mcp-document-server). 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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