mixpost_add_post_to_queue · Mixpost MCP: Risk & Policy

WHAT IT DOES

What mixpost_add_post_to_queue does on Mixpost

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

WHY IT NEEDS A POLICY

Why mixpost_add_post_to_queue needs a policy

This tool creates a new entry in a queue and modifies queue state, which is a reversible write operation. It does not delete data (hence not Destructive), does not execute arbitrary code (hence not Execute), and does not move money (hence not Financial).

From the tool's definition Tool description states 'Add a post to the publishing queue', which involves modifying the queue state by adding content that will be published to social media platforms. The verb 'add' indicates a create/modify operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

mixpost_add_post_to_queue Rate-limited

mixpost_add_post_to_queue 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": {
    "mixpost_add_post_to_queue": {
      "limits": [
        {
          "counter": "mixpost_add_post_to_queue_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 Mixpost, so you can run agents against it safely.

FAQ

Questions about mixpost_add_post_to_queue

What does the mixpost_add_post_to_queue tool do? +

Add a post to the publishing queue. It is categorised as a Write tool in the Mixpost MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on mixpost_add_post_to_queue? +

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

What risk level is mixpost_add_post_to_queue? +

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

Can I rate-limit mixpost_add_post_to_queue? +

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

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

mixpost_add_post_to_queue is provided by the Mixpost MCP server (pfarag/mixpost-mcp-server). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.