AI agents call search to retrieve information from Kb without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The tool name 'search' combined with the server's stated purpose of persistent knowledge storage strongly suggests a retrieval/query operation. The empty description prevents higher confidence, but the Read category is the most reasonable default for a search function in a knowledge management system. No evidence of side effects, state modification, or external operations.
From the tool's definition Tool named 'search' with empty description; based on context as a 'knowledge' server providing 'shared context and learning foundation,' this tool most likely queries or retrieves notes and stored information rather than modifying or executing operations.
Attacks that exploit this kind of access
search. It is categorised as a Read tool in the Kb MCP Server, which means it retrieves data without modifying state.
Register the Kb MCP server in PolicyLayer and add a rule for 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 Kb. Nothing to install.
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 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 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.
search is provided by the Kb MCP server (okash1n/kb). 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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