AI agents call get_random_verse_tool to retrieve information from 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 simple read operation that queries and returns Bible content from an external API. It has no side effects—it does not create, modify, delete, or execute code. The random selection mechanism does not change this classification, as the underlying operation is purely retrieval of existing data. Severity is low because misuse causes no harm beyond potentially receiving unwanted data in responses.
From the tool's definition Tool retrieves 'a random verse from the Bible' with no parameters for modification or deletion. Functionality limited to fetching/querying Bible content.
Documented attack patterns abuse exactly the kind of access get_random_verse_tool gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Bible MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for get_random_verse_tool:
{
"version": "1",
"default": "deny",
"tools": {
"get_random_verse_tool": {}
}
}get_random_verse_tool is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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Get a random verse from the Bible. It is categorised as a Read tool in the Bible MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Bible MCP Server MCP server in PolicyLayer and add a rule for get_random_verse_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 Bible MCP Server. Nothing to install.
get_random_verse_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_random_verse_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_random_verse_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_random_verse_tool is provided by the Bible MCP Server MCP server (trevato/bible-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from 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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3 Bible MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.