AI agents call list_documents to retrieve information from Omniplan without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns a list of open documents. It performs no data modification, deletion, execution of commands, or financial operations. The blast radius of misuse is minimal — an agent could only view what documents are currently open, which poses no risk to data integrity or system state. Classified as Read with low severity.
From the tool's definition Tool description states it 'List[s] all currently open OmniPlan documents' — a read-only operation that retrieves information without modification or side effects.
Attacks that exploit this kind of access
List all currently open OmniPlan documents. It is categorised as a Read tool in the Omniplan MCP Server, which means it retrieves data without modifying state.
Register the Omniplan 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 Omniplan. 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 Omniplan MCP server (johntrandall/omniplan-mcp). 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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