ghost_create_tag · Ghost MCP: Risk & Policy

WHAT IT DOES

What ghost_create_tag does on Ghost

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

WHY IT NEEDS A POLICY

Why ghost_create_tag needs a policy

This tool creates new metadata (tags) within a Ghost blog. It modifies the blog's structure reversibly—tags can be deleted or edited later. It does not execute arbitrary code, delete data irreversibly, move money, or read sensitive information. Write category is appropriate.

From the tool's definition Tool name 'ghost_create_tag' and description 'Create a new Ghost tag' indicate creation of new data in a Ghost blog system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ghost_create_tag Rate-limited

ghost_create_tag 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": {
    "ghost_create_tag": {
      "limits": [
        {
          "counter": "ghost_create_tag_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

LIMIT THIS TOOL →

Instant setup, no code required.

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

FAQ

Questions about ghost_create_tag

What does the ghost_create_tag tool do? +

Create a new Ghost tag. It is categorised as a Write tool in the Ghost MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ghost_create_tag? +

Register the Ghost MCP server in PolicyLayer and add a rule for ghost_create_tag: 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 Ghost. Nothing to install.

What risk level is ghost_create_tag? +

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

Can I rate-limit ghost_create_tag? +

Yes. Add a rate_limit block to the ghost_create_tag 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 ghost_create_tag completely? +

Set action: deny in the PolicyLayer policy for ghost_create_tag. 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 ghost_create_tag? +

ghost_create_tag is provided by the Ghost MCP server (uppinote20/ghost-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.