create_post · Postiz MCP Server MCP: Risk & Policy

WHAT IT DOES

What create_post does on Postiz MCP Server

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

WHY IT NEEDS A POLICY

Why create_post needs a policy

This tool creates new content on a social media platform, which is a reversible write operation. The severity is medium because misconfigured posts could damage reputation, spread misinformation, or violate platform policies, but the action is not destructive (posts can be deleted) and carries no direct financial impact. The tool does not execute arbitrary code or delete data.

From the tool's definition Tool name 'create_post' and description 'Create a new social media post on Postiz platform' indicate the tool creates new data (a post) on the platform.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_post Rate-limited

create_post 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": {
    "create_post": {
      "limits": [
        {
          "counter": "create_post_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 Postiz MCP Server, so you can run agents against it safely.

FAQ

Questions about create_post

What does the create_post tool do? +

Create a new social media post on Postiz platform. It is categorised as a Write tool in the Postiz MCP Server MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on create_post? +

Register the Postiz MCP Server MCP server in PolicyLayer and add a rule for create_post: 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 Postiz MCP Server. Nothing to install.

What risk level is create_post? +

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

Can I rate-limit create_post? +

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

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

create_post is provided by the Postiz MCP Server MCP server (oculairmedia/postizz-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.