list_decks · Mochi MCP Server MCP: Risk & Policy

WHAT IT DOES

What list_decks does on Mochi MCP Server

AI agents call list_decks to retrieve information from Mochi MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.

WHY IT NEEDS A POLICY

Why list_decks needs a policy

This tool queries and returns existing deck data without creating, modifying, deleting, or executing any operations. It is purely informational and presents minimal risk if misused by an AI agent, as the worst case is exposure of existing deck names/metadata.

From the tool's definition Tool name 'list_decks' and description 'List all decks' indicates a retrieval operation with no modification or side effects.

Attacks that exploit this kind of access

Questions about list_decks

What does the list_decks tool do? +

List all decks. It is categorised as a Read tool in the Mochi MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on list_decks? +

Register the Mochi MCP Server MCP server in PolicyLayer and add a rule for list_decks: 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 Mochi MCP Server. Nothing to install.

What risk level is list_decks? +

list_decks is a Read tool with low risk. Read-only tools are generally safe to allow by default.

Can I rate-limit list_decks? +

Yes. Add a rate_limit block to the list_decks 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.

How do I block list_decks completely? +

Set action: deny in the PolicyLayer policy for list_decks. 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.

What MCP server provides list_decks? +

list_decks is provided by the Mochi MCP Server MCP server (shunkus/mochi-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.