AI agents call search_laws to retrieve information from Egov Law without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a search query against a legal database and returns matching results. It has no side effects—it does not create, modify, execute, delete, or move data. It is a standard read operation that retrieves information for the user to review. The low severity reflects minimal risk; misuse would only surface irrelevant search results without affecting system state or external operations.
From the tool's definition The tool description states it 'Search[es] current Japanese laws from e-Gov Law Search by keyword', which is a retrieval operation.
Attacks that exploit this kind of access
Search current Japanese laws from e-Gov Law Search by keyword. It is categorised as a Read tool in the Egov Law MCP Server, which means it retrieves data without modifying state.
Register the Egov Law MCP server in PolicyLayer and add a rule for search_laws: 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 Egov Law. Nothing to install.
search_laws 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 search_laws 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 search_laws. 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.
search_laws is provided by the Egov Law MCP server (shayouworld/egov-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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