AI agents call get_book_list_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 straightforward data retrieval operation querying available books from the Bible study resource. No side effects, data modification, code execution, deletion, or financial operations occur. The blast radius if misused by an AI agent is minimal—at worst, unnecessary list retrievals consuming API quota.
From the tool's definition Tool name 'get_book_list_tool' and description '取得書卷列表' (retrieve book list) indicate a read-only operation that retrieves a list of biblical books without modifying any data.
Documented attack patterns abuse exactly the kind of access get_book_list_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 get_book_list_tool:
{
"version": "1",
"default": "deny",
"tools": {
"get_book_list_tool": {}
}
}get_book_list_tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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取得書卷列表。. 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 get_book_list_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.
get_book_list_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 get_book_list_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 get_book_list_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.
get_book_list_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.
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56 FHL Bible MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.