search_laws_by_keyword

THE RISK

Low Risk

Why search_laws_by_keyword needs a policy

This tool retrieves and queries legal data without modifying, deleting, or executing code. It performs a passive search operation that returns matching results. No data creation, modification, destruction, or financial operations occur. This is a classic Read category tool with minimal blast radius if misused by an AI agent—worst case would be excessive queries or information disclosure of public legal documents.

From the tool's definition Tool description states 'Full-text keyword search in Japanese laws' and server is described as enabling 'intelligent search and retrieval' with 'no side effects' implied by the read-only nature of search operations.

Documented attack patterns abuse exactly the kind of access search_laws_by_keyword gives an agent:

POLICY

How to control search_laws_by_keyword

PolicyLayer is an MCP gateway — it sits between your AI agents and e-Gov Law MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_laws_by_keyword:

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "search_laws_by_keyword": {}
  }
}

search_laws_by_keyword is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.

Create a free account and register e-Gov Law MCP Server — nothing to install.
Add this policy — paste it, or build it visually.
Point your MCP client (Claude, Cursor, anything) at your gateway URL.

CAP THIS TOOL →

Free to start. No card required.

EXPLORE

Related tools and policies

More e-Gov Law MCP Server tools

Destructive clear_cache Clear specified cache or all caches Read batch_find_articles batch_find_articles Read find_law_article find_law_article Read get_cache_stats Get current cache statistics and performance metrics Read get_law_content get_law_content Read prefetch_common_laws Prefetch commonly accessed laws for better performance Read search_laws search_laws

All 8 e-Gov Law MCP Server tools →

Read tools on other servers

M-Team MCP Server get_torrent_detail YouTube MCP Server search_channel Android Forensics ADB MCP Server parse_browser_history 0xarchive web3_challenge

Go deeper

The MCP Attack Database → Documented attack patterns against MCP deployments — and the policies that stop them.
Data exfiltration → How read access becomes an exfiltration channel when chained with untrusted content.
MCP token cost → What connecting this server costs in context-window tokens on every request.
Rate Limiting MCP Tool Calls: A Practical Guide →
MCP Security: Why Prompt Guardrails Aren't Enough →

FAQ

Questions about search_laws_by_keyword

What does the search_laws_by_keyword tool do? +

Full-text keyword search in Japanese laws. It is categorised as a Read tool in the e-Gov Law MCP Server MCP Server, which means it retrieves data without modifying state.

How do I enforce a policy on search_laws_by_keyword? +

Register the e-Gov Law MCP Server MCP server in PolicyLayer and add a rule for search_laws_by_keyword: 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 e-Gov Law MCP Server. Nothing to install.

What risk level is search_laws_by_keyword? +

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

Can I rate-limit search_laws_by_keyword? +

Yes. Add a rate_limit block to the search_laws_by_keyword 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 search_laws_by_keyword completely? +

Set action: deny in the PolicyLayer policy for search_laws_by_keyword. 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 search_laws_by_keyword? +

search_laws_by_keyword is provided by the e-Gov Law MCP Server MCP server (ryoooo/e-gov-law-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.

Enforce policy on every e-Gov Law MCP Server tool call.

Start from e-Gov Law MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.

CHECK YOUR STACK →