AI agents call campaign_get 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 campaign data from Meta's Graph API without modifying, deleting, or executing any operations. The GET HTTP method and read-only server design confirm this is a passive data query with no side effects. Severity is low because exposure of campaign metadata poses minimal direct risk compared to tools that could modify advertising spend or execute external operations.
From the tool's definition Tool name 'campaign_get' and description 'GET /{campaign_id}' indicate a simple data retrieval operation. Server is explicitly described as 'Read-only MCP server' with no modification, deletion, or execution capabilities.
Attacks that exploit this kind of access
GET /{campaign_id}. 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 campaign_get: 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.
campaign_get 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 campaign_get 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 campaign_get. 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.
campaign_get 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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