目的地・日程・予算・移動時間を指定して楽天トラベルでビジネスホテルを検索します。Google Mapsで実際の移動時間を計算して絞り込みます。
Risk signalsAccepts file system path (destination)
Part of the HoShy server.
Free to start. No card required.
AI agents call search_business_hotel to retrieve information from HoShy without modifying any data. This is common in research, monitoring, and reporting workflows where the agent needs context before taking action. Because read operations don't change state, they are generally safe to allow without restrictions -- but you may still want rate limits to control API costs.
Even though search_business_hotel only reads data, uncontrolled read access can leak sensitive information or rack up API costs. An agent caught in a retry loop could make thousands of calls per minute. A rate limit gives you a safety net without blocking legitimate use.
Read-only tools are safe to allow by default. No rate limit needed unless you want to control costs.
{
"version": "1",
"default": "deny",
"tools": {
"search_business_hotel": {}
}
}See the full HoShy policy for all 3 tools.
These attack patterns abuse exactly the kind of access search_business_hotel gives an agent. Each links to the full case and the policy that stops it:
Other read tools across the catalogue. The same approach applies to each: allow, with a rate cap to control cost.
目的地・日程・予算・移動時間を指定して楽天トラベルでビジネスホテルを検索します。Google Mapsで実際の移動時間を計算して絞り込みます。. It is categorised as a Read tool in the HoShy MCP Server, which means it retrieves data without modifying state.
Register the HoShy MCP server in PolicyLayer and add a rule for search_business_hotel: 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 HoShy. Nothing to install.
search_business_hotel 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_business_hotel 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_business_hotel. 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_business_hotel is provided by the HoShy MCP server (https://hoshy.negimaru1025.workers.dev/mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 3 HoShy tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
Free to start. No card required.
4,600+ MCP servers and 31,000+ tools scanned and risk-classified.