create_post · Portfolio MCP: Risk & Policy

WHAT IT DOES

What create_post does on Portfolio

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

WHY IT NEEDS A POLICY

Why create_post needs a policy

This tool creates a new MDX blog post, which is a Write operation. It is reversible (the post can be deleted), so it does not qualify as Destructive. Severity is medium because misuse could publish unwanted content to a portfolio, but the blast radius is limited and the action is undoable.

From the tool's definition 'Create a new blog post' — creates new content; reversible via deletion or version control

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 Portfolio, so you can run agents against it safely.

FAQ

Questions about create_post

What does the create_post tool do? +

Create a new blog post. It is categorised as a Write tool in the Portfolio 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 Portfolio 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 Portfolio. 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 Portfolio MCP server (sohumsuthar/portfolio-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.