AI agents call acf_get_field_group to retrieve information from Wordpress without modifying anything — typically the context-gathering step in research, monitoring, and reporting workflows, before the agent takes action elsewhere.
This tool retrieves ACF (Advanced Custom Fields) field group metadata and configuration by ID without modifying, executing, or deleting anything. It is a pure read operation with no side effects. The explicit 'Read-only' designation confirms this classification.
From the tool's definition Tool name 'acf_get_field_group' and description explicitly states 'get full details' and 'Read-only.'
Attacks that exploit this kind of access
Use to get full details of an ACF field group by ID. Read-only. It is categorised as a Read tool in the Wordpress MCP Server, which means it retrieves data without modifying state.
Register the Wordpress MCP server in PolicyLayer and add a rule for acf_get_field_group: 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 Wordpress. Nothing to install.
acf_get_field_group 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 acf_get_field_group 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 acf_get_field_group. 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.
acf_get_field_group is provided by the Wordpress MCP server (@adsim/wordpress-mcp-server). 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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