AI agents call hybrid_search to retrieve information from WeKnora MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Hybrid search is a standard information retrieval operation that searches and returns matching results from a knowledge base. It has no side effects on the underlying data—it does not create, modify, delete, or execute operations. The only risk is potential information disclosure if the knowledge base contains sensitive data, but this is a read-only query capability, making it a Read category tool with low severity.
From the tool's definition Tool name 'hybrid_search' and description 'Perform hybrid search in knowledge base' indicate a query operation that retrieves data from the knowledge base without modifying, deleting, or executing external operations.
Documented attack patterns abuse exactly the kind of access hybrid_search gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and WeKnora MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for hybrid_search:
{
"version": "1",
"default": "deny",
"tools": {
"hybrid_search": {}
}
}hybrid_search is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
Free to start. No card required.
Perform hybrid search in knowledge base. It is categorised as a Read tool in the WeKnora MCP Server MCP Server, which means it retrieves data without modifying state.
Register the WeKnora MCP Server MCP server in PolicyLayer and add a rule for hybrid_search: 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 WeKnora MCP Server. Nothing to install.
hybrid_search 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 hybrid_search 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 hybrid_search. 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.
hybrid_search is provided by the WeKnora MCP Server MCP server (nannaolympicbroadcast/weknoramcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from WeKnora 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.
21 WeKnora MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.