Query a configured source and return table-style rows with selected Notion properties converted to simple JSON values.
AI agents call notion_source_query 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 and queries data from a Notion source without any capability to modify, delete, or execute operations. The primary function is data retrieval with property filtering and transformation into JSON format. Combined with the sibling tools on the server (which include separate tools for adding/removing properties and other mutations), this tool's scope is clearly limited to read-only operations.
From the tool's definition Tool name and description explicitly state 'Query' and 'return table-style rows' with no mention of modification, deletion, or execution. The description emphasizes 'querying' and 'converting to simple JSON values' for retrieval purposes only.
Attacks that exploit this kind of access
Query a configured source and return table-style rows with selected Notion properties converted to simple JSON values. 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_source_query: 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_source_query 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_source_query 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_source_query. 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_source_query 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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