Get exactly one row/page from a Notion data source by exact property match. Errors on not found or duplicate match.
AI agents call notion_db_get_by_property to retrieve information from Notion DB MCP Helper without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves data from a Notion database based on a filter without modifying, deleting, or executing any operations. It is a straightforward read operation that queries and returns information. The error handling (on not found or duplicate match) confirms it is defensive lookup logic, not a write or destructive action. Severity is low because the blast radius of misuse is limited to information disclosure.
From the tool's definition Tool name and description indicate retrieval only: 'Get exactly one row/page' with 'exact property match'. No modification, deletion, or execution of external operations—purely a query/fetch operation.
Attacks that exploit this kind of access
Get exactly one row/page from a Notion data source by exact property match. Errors on not found or duplicate match. It is categorised as a Read tool in the Notion DB MCP Helper MCP Server, which means it retrieves data without modifying state.
Register the Notion DB MCP Helper MCP server in PolicyLayer and add a rule for notion_db_get_by_property: 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 DB MCP Helper. Nothing to install.
notion_db_get_by_property 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 notion_db_get_by_property 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 notion_db_get_by_property. 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.
notion_db_get_by_property is provided by the Notion DB MCP Helper MCP server (trisetiohidayat/notion-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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