microCMSについての質問に答える場合に利用します。ドキュメントディレクトリのファイル名一覧を返します。カテゴリーを指定することで特定のサブディレクトリのみを対象にできます。\n\nまだ
AI agents call list_documents to retrieve information from microCMS Document MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This is a straightforward file listing operation that retrieves metadata about documents. It has no side effects and fits the Read category definition: retrieves or queries data without modification. Low severity due to limited blast radius—an AI listing documents cannot cause harm beyond information disclosure. High confidence because the description explicitly describes returning a file name list from a directory.
From the tool's definition Tool returns a list of file names from a document directory ("ドキュメントディレクトリのファイル名一覧を返します"). It retrieves/queries data with optional filtering by category. No modification, deletion, execution, or financial impact is described.
Documented attack patterns abuse exactly the kind of access list_documents gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and microCMS Document MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for list_documents:
{
"version": "1",
"default": "deny",
"tools": {
"list_documents": {}
}
}list_documents is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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microCMSについての質問に答える場合に利用します。ドキュメントディレクトリのファイル名一覧を返します。カテゴリーを指定することで特定のサブディレクトリのみを対象にできます。\n\nまだ. It is categorised as a Read tool in the microCMS Document MCP Server MCP Server, which means it retrieves data without modifying state.
Register the microCMS Document MCP 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 microCMS Document MCP 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 microCMS Document MCP Server MCP server (microcmsio/microcms-document-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from microCMS Document MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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3 microCMS Document MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.