AI agents call list_saiketsu to retrieve information from Tax Law 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 structured information about tax law categories without side effects. It is purely informational, allowing users to browse and understand the organization of tax rulings data. No write, execute, destructive, or financial operations are possible with this tool.
From the tool's definition Tool name 'list_saiketsu' and description indicate it 'displays' (表示する) a list of tax categories and hierarchies from official Japanese tax court rulings (国税不服審判所).
Attacks that exploit this kind of access
国税不服審判所の公表裁決事例の税目・カテゴリ一覧を表示する。税目名を省略すると13税目の一覧を表示。税目を指定するとカテゴリ階層を表示。. It is categorised as a Read tool in the Tax Law MCP Server, which means it retrieves data without modifying state.
Register the Tax Law MCP server in PolicyLayer and add a rule for list_saiketsu: 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 Tax Law. Nothing to install.
list_saiketsu 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_saiketsu 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_saiketsu. 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_saiketsu is provided by the Tax Law MCP server (xqzimgz/tax-law-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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