yaag_create_category · YearAtAGlance MCP Server MCP

WHAT IT DOES

What yaag_create_category does on YearAtAGlance MCP Server

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

WHY IT NEEDS A POLICY

Why yaag_create_category needs a policy

This tool creates new calendar category data, which is reversible (categories can be deleted/modified). It modifies the calendar system state but does not delete data or execute arbitrary code, placing it in the Write category. Severity is medium because misconfigured categories could clutter the calendar system, but the impact is limited to organizational metadata with no destructive or financial consequences.

From the tool's definition Tool name includes 'create' and description states 'Create a new category for organizing events', indicating data creation/modification.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

yaag_create_category Rate-limited

yaag_create_category 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": {
    "yaag_create_category": {
      "limits": [
        {
          "counter": "yaag_create_category_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 YearAtAGlance MCP Server, so you can run agents against it safely.

FAQ

Questions about yaag_create_category

What does the yaag_create_category tool do? +

Create a new category for organizing events. It is categorised as a Write tool in the YearAtAGlance 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 yaag_create_category? +

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

What risk level is yaag_create_category? +

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

Can I rate-limit yaag_create_category? +

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

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

yaag_create_category is provided by the YearAtAGlance MCP Server MCP server (mindfullabai/yearataglance-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.