create_task_comment · Vaiz MCP: Risk & Policy

WHAT IT DOES

What create_task_comment does on Vaiz MCP

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

WHY IT NEEDS A POLICY

Why create_task_comment needs a policy

The tool creates a comment on a task, which is a non-destructive write operation. Comments can typically be edited or deleted later, making this a reversible modification. The blast radius is minimal—misuse would only add unwanted comments to a task, not delete data, execute code, or affect financial systems. This is lower severity than Execute or Destructive actions.

From the tool's definition Tool name 'create_task_comment' and description 'Create a new comment on a task' explicitly indicate creation of new data (a comment). This is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_task_comment Rate-limited

create_task_comment 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_task_comment": {
      "limits": [
        {
          "counter": "create_task_comment_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 Vaiz MCP, so you can run agents against it safely.

FAQ

Questions about create_task_comment

What does the create_task_comment tool do? +

Create a new comment on a task by database ID or HRID (e.g.,. It is categorised as a Write tool in the Vaiz MCP 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_task_comment? +

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

What risk level is create_task_comment? +

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

Can I rate-limit create_task_comment? +

Yes. Add a rate_limit block to the create_task_comment 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_task_comment completely? +

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

create_task_comment is provided by the Vaiz MCP server (vaizcom/vaiz-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.