AI agents use wordpress_update_reusable_block to create or update resources in ItchWPMCP — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your ItchWPMCP environment.
The tool updates reusable blocks, which are WordPress content elements. Updates are reversible modifications (content can be changed again or reverted), making this a Write operation rather than Destructive. Severity is medium because misconfiguration could affect multiple pages that use the same reusable block, but the change is non-destructive and can be undone.
From the tool's definition Tool name contains 'update' and description states 'Update a synced pattern (reusable block) by ID' — this modifies existing content reversibly via the WordPress REST API.
Attacks that exploit this kind of access
Update a synced pattern (reusable block) by ID. It is categorised as a Write tool in the ItchWPMCP MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.
Register the ItchWP MCP server in PolicyLayer and add a rule for wordpress_update_reusable_block: 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 ItchWPMCP. Nothing to install.
wordpress_update_reusable_block 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 wordpress_update_reusable_block 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 wordpress_update_reusable_block. 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.
wordpress_update_reusable_block is provided by the ItchWP MCP server (manofsadness/itchwpmcp). 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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