AI agents call fetch_grounding_rules to retrieve information from Hadith without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves guidance documentation—no side effects, no data modification, no execution of external operations, and no financial impact. It is purely informational retrieval, fitting the Read category with low severity due to minimal blast radius if misused by an agent.
From the tool's definition Tool fetches and returns guidance text ("Citation and limitation guidance"). The description indicates it retrieves stored rules without modifying, creating, or deleting data.
Attacks that exploit this kind of access
Citation and limitation guidance. Re-calls without force_full return a short repeat message. It is categorised as a Read tool in the Hadith MCP Server, which means it retrieves data without modifying state.
Register the Hadith MCP server in PolicyLayer and add a rule for fetch_grounding_rules: 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 Hadith. Nothing to install.
fetch_grounding_rules 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 fetch_grounding_rules 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 fetch_grounding_rules. 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.
fetch_grounding_rules is provided by the Hadith MCP server (ovehbe/hadith-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Every MCP server has a record like this.
Type a name, get the same breakdown: verified identity, auth posture, risk grade, capabilities, recommended policy.
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