AI agents call pages_list to retrieve information from Meta without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves account/page data via GET request, which is a read-only query operation with no side effects. Although access tokens are included in the response (which could be sensitive), the tool itself only fetches and returns existing data without modification, deletion, or execution.
From the tool's definition GET /me/accounts — returns pages with id, name and (importantly) access_token for each. Described as read-only MCP server with GET operation that retrieves and returns data.
Attacks that exploit this kind of access
GET /me/accounts — returns pages with id, name and (importantly) access_token for each. It is categorised as a Read tool in the Meta MCP Server, which means it retrieves data without modifying state.
Register the Meta MCP server in PolicyLayer and add a rule for pages_list: 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 Meta. Nothing to install.
pages_list 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 pages_list 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 pages_list. 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.
pages_list is provided by the Meta MCP server (nourpups/meta-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.
Teams ship this data inside their own products. See what a licence covers →