Search a knowledge base using hybrid semantic + keyword search. Returns relevant chunks with relevance scores.
AI agents call search_kb to retrieve information from MindsDB MySQL MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves and queries data from a knowledge base without creating, modifying, deleting, or executing code. The search operation returns results but does not alter the underlying data or trigger external operations. This is a classic Read category tool with minimal risk of harm when misused by an AI agent.
From the tool's definition Tool name 'search_kb' and description 'Search a knowledge base using hybrid semantic + keyword search. Returns relevant chunks with relevance scores' indicate a retrieval/query operation with no modification or side effects.
Attacks that exploit this kind of access
Search a knowledge base using hybrid semantic + keyword search. Returns relevant chunks with relevance scores. It is categorised as a Read tool in the MindsDB MySQL MCP Server MCP Server, which means it retrieves data without modifying state.
Register the MindsDB MySQL MCP Server MCP server in PolicyLayer and add a rule for search_kb: 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 MindsDB MySQL MCP Server. Nothing to install.
search_kb 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_kb 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_kb. 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_kb is provided by the MindsDB MySQL MCP Server MCP server (nikhgupta/mindsdb-mysql-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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