AI agents call search_commentary_tool to retrieve information from FHL Bible MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool performs a keyword search across commentary resources, which is a read-only operation that retrieves data without side effects. It does not create, modify, delete, or execute any actions. The blast radius of misuse is minimal—an adversary could only retrieve existing commentary data, not alter it or trigger external actions.
From the tool's definition Tool name 'search_commentary_tool' and description '在註釋書中搜尋關鍵字' (search for keywords in commentaries) indicate keyword search functionality.
Documented attack patterns abuse exactly the kind of access search_commentary_tool gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and FHL Bible MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for search_commentary_tool:
{
"version": "1",
"default": "deny",
"tools": {
"search_commentary_tool": {}
}
}search_commentary_tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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在註釋書中搜尋關鍵字。. It is categorised as a Read tool in the FHL Bible MCP Server MCP Server, which means it retrieves data without modifying state.
Register the FHL Bible MCP Server MCP server in PolicyLayer and add a rule for search_commentary_tool: 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 FHL Bible MCP Server. Nothing to install.
search_commentary_tool 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_commentary_tool 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_commentary_tool. 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_commentary_tool is provided by the FHL Bible MCP Server MCP server (ytssamuel/fhl-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from FHL Bible MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
Free to start. No card required.
56 FHL Bible MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.