AI agents call query_database to retrieve information from Notion API 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 or searches data from a Notion database using filters and sorting parameters. It has no side effects—it returns results without altering the database state. This is a classic Read operation. The low severity reflects that misuse is limited to data access, which in a Notion context is relatively contained (assuming proper access controls upstream).
From the tool's definition Tool name 'query_database' and description 'Query database with filters and sorting' indicate retrieval operations. No language suggesting modification, deletion, or execution of arbitrary code.
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 API 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.
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Query database with filters and sorting. It is categorised as a Read tool in the Notion API MCP Server MCP Server, which means it retrieves data without modifying state.
Register the Notion API 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 API 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 API MCP Server MCP server (pbohannon/notion-api-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Start from Notion API MCP Server, add the rest of your stack, and see everything your agents can call. Then put policy on all of it.
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17 Notion API MCP Server tools catalogued and risk-classified — across an index of 43,000+ MCP servers.