acf_update_user_fields
Aktualisiert ACF Custom Fields eines Benutzers
This record as markdown: /tools/c-sakel-wp-mcp-server/acf-update-user-fields.md
What acf_update_user_fields does on WordPress MCP Server
AI agents use acf_update_user_fields to create or update resources in WordPress MCP Server, usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your WordPress MCP Server environment.
Why acf_update_user_fields is rated Medium
The tool modifies user custom fields reversibly through the ACF (Advanced Custom Fields) plugin. This is a Write operation—data is changed but not destroyed, and the operation can be undone.
From the tool's definition Tool name contains 'update' and description states 'Aktualisiert ACF Custom Fields eines Benutzers' (Updates ACF custom fields of a user). This is a modification operation on user data.
Attacks that exploit this kind of access
The rule that runs acf_update_user_fields safely
PolicyLayer is an MCP gateway: it sits between your AI agents and WordPress MCP Server, and checks every tool call against a rule you set before the call runs. Nothing changes on the server itself. For acf_update_user_fields, this is the rule to start with:
acf_update_user_fields stays usable, but capped: an agent stuck in a loop can't make hundreds of changes a minute. Everything else on the server is denied unless you say otherwise.
The button opens the PolicyLayer dashboard: create your workspace, connect WordPress MCP Server, apply this rule, and every acf_update_user_fields call is checked against it from then on.
Questions about acf_update_user_fields
Aktualisiert ACF Custom Fields eines Benutzers. It is categorised as a Write tool in the WordPress MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the WordPress MCP Server MCP server in PolicyLayer and add a rule for acf_update_user_fields: 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 MCP Server. Nothing to install.
acf_update_user_fields is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.
Yes. Add a rate_limit block to the acf_update_user_fields 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_update_user_fields. 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_update_user_fields is provided by the WordPress MCP Server MCP server (c-sakel/wp-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.
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