AI agents call search_interests to retrieve information from Meta Ads MCP without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
The naming convention strongly suggests this is a read-only operation that queries available interest categories for ad targeting. No sibling tools suggest data retrieval, and search operations are classified as Read unless they can execute arbitrary code or trigger side effects.
From the tool's definition Tool name 'search_interests' indicates a search/query operation. The description is empty, but contextual evidence from sibling tools (create_ad, create_campaign, create_adset, etc.) suggests this server manages advertising data.
Documented attack patterns abuse exactly the kind of access search_interests gives an agent:
PolicyLayer is an MCP gateway — it sits between your AI agents and Meta Ads MCP, and nothing reaches the server without passing your rules. This is the rule we recommend for search_interests:
{
"version": "1",
"default": "deny",
"tools": {
"search_interests": {}
}
}search_interests is read-only, so it stays allowed — but everything else on the server is denied unless you say otherwise.
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search_interests. It is categorised as a Read tool in the Meta Ads MCP MCP Server, which means it retrieves data without modifying state.
Register the Meta Ads MCP server in PolicyLayer and add a rule for search_interests: 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 Ads MCP. Nothing to install.
search_interests 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 search_interests 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 search_interests. 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.
search_interests is provided by the Meta Ads MCP server (pipeboard-co/meta-ads-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
Deterministic rules across all 42 Meta Ads MCP tools. Per-identity grants. Full audit log. Live in minutes. Nothing to install.
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42 Meta Ads MCP tools catalogued and risk-classified — across an index of 42,500+ MCP servers.