AI agents call adcreatives_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 advertising creative data from Meta's Graph API without modification, deletion, or execution capabilities. The GET HTTP method and 'list' operation confirm it is a safe read operation. Even though advertising data is business-sensitive, the read-only nature and lack of side effects place it in the Read category with low severity.
From the tool's definition Tool name 'adcreatives_list' and description 'GET /act_{id}/adcreatives' indicate a read-only list retrieval operation. Server is explicitly described as 'Read-only MCP server' for Meta Graph API.
Attacks that exploit this kind of access
GET /act_{id}/adcreatives. 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 adcreatives_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.
adcreatives_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 adcreatives_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 adcreatives_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.
adcreatives_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.
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