AI agents call query-database to retrieve information from Notion MCP Server without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
Query operations retrieve or search data without modifying it, fitting the Read category. Severity is medium rather than low because database queries in a Notion workspace could expose sensitive personal, financial, or proprietary information depending on workspace contents, though the tool itself has no destructive or side-effect capabilities.
From the tool's definition Tool name is 'query-database' and description states it 'Query a database'. The sibling tools include write operations (create-database, create-page, append-block-children, update-block, update-database) and read operations (get-block, get-page,…
Documented attack patterns abuse exactly the kind of access query-database gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Notion MCP Server, and nothing reaches the server without passing your rules. This is the rule we recommend for query-database:
{
"version": "1",
"default": "deny",
"tools": {
"query-database": {}
}
}query-database 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.
Query a database. It is categorised as a Read tool in the Notion MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Notion MCP Server MCP server in PolicyLayer and add a rule for query-database: 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 Notion MCP Server. Nothing to install.
query-database 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 query-database 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 query-database. 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.
query-database is provided by the Notion MCP Server MCP server (sjotie/notionmcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Notion 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.
12 Notion MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.