wp_post_update · Wp Cli MCP: Risk & Policy

WHAT IT DOES

What wp_post_update does on Wp Cli

AI agents use wp_post_update to create or update resources in Wp Cli — usually the action step of a workflow, after the agent has gathered context. Every call changes real data in your Wp Cli environment.

WHY IT NEEDS A POLICY

Why wp_post_update needs a policy

This tool creates or modifies data reversibly by updating post content, metadata, or status in WordPress. While it changes data, it does not permanently delete records or execute arbitrary code—the effects are bounded to post updates. Severity is medium because an AI agent could modify posts inappropriately (spam, misinformation, defacement), but the changes remain recoverable through WordPress revisions or backups.

From the tool's definition Tool name is 'wp_post_update' with description 'Update an existing post'. The verb 'Update' and the documented purpose of modifying post data indicates reversible alteration of content.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

wp_post_update Rate-limited

wp_post_update 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.

View as policy code

policy.json

{
  "version": "1",
  "default": "deny",
  "tools": {
    "wp_post_update": {
      "limits": [
        {
          "counter": "wp_post_update_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Wp Cli, so you can run agents against it safely.

FAQ

Questions about wp_post_update

What does the wp_post_update tool do? +

Update an existing post. It is categorised as a Write tool in the Wp Cli MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on wp_post_update? +

Register the Wp Cli MCP server in PolicyLayer and add a rule for wp_post_update: 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 Wp Cli. Nothing to install.

What risk level is wp_post_update? +

wp_post_update is a Write tool with medium risk. Write tools should be rate-limited to prevent accidental bulk modifications.

Can I rate-limit wp_post_update? +

Yes. Add a rate_limit block to the wp_post_update 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.

How do I block wp_post_update completely? +

Set action: deny in the PolicyLayer policy for wp_post_update. 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.

What MCP server provides wp_post_update? +

wp_post_update is provided by the Wp Cli MCP server (mvtandas/wp-cli-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.