AI agents call drupal_list_nodes to retrieve information from Drupal without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool queries and returns node data without modifying, deleting, or executing any operations. It is purely a data retrieval function that lists Drupal content nodes with pagination and sorting. No destructive, write, execute, or financial operations are performed.
From the tool's definition Tool name 'drupal_list_nodes' and description 'List nodes of a given bundle (content type). Returns a paginated set of nodes with their attributes flattened.' indicate a retrieval operation with no side effects.
Attacks that exploit this kind of access
List nodes of a given bundle (content type). Returns a paginated set of nodes with their attributes flattened. Default sort is by created date desc. It is categorised as a Read tool in the Drupal MCP Server, which means it retrieves data without modifying state.
Register the Drupal MCP server in PolicyLayer and add a rule for drupal_list_nodes: 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 Drupal. Nothing to install.
drupal_list_nodes 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 drupal_list_nodes 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 drupal_list_nodes. 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.
drupal_list_nodes is provided by the Drupal MCP server (lucaspretti/drupal-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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