create_people_group · Mycase MCP: Risk & Policy

WHAT IT DOES

What create_people_group does on Mycase

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

WHY IT NEEDS A POLICY

Why create_people_group needs a policy

This tool creates a new entity (people group) in the law firm's MyCase account, modifying the database state reversibly. It is a Write operation because it creates/adds data without permanently destroying information or executing arbitrary code.

From the tool's definition Tool name is 'create_people_group' and description states 'Create a new people group.' The verb 'create' indicates the tool adds new data to the MyCase system.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

create_people_group Rate-limited

create_people_group 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_people_group": {
      "limits": [
        {
          "counter": "create_people_group_rate",
          "window": "minute",
          "max": 30,
          "scope": "grant"
        }
      ]
    }
  }
}

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PolicyLayer is an MCP gateway: every tool call is checked against your rule before it reaches Mycase, so you can run agents against it safely.

FAQ

Questions about create_people_group

What does the create_people_group tool do? +

Create a new people group. It is categorised as a Write tool in the Mycase 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_people_group? +

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

What risk level is create_people_group? +

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

Can I rate-limit create_people_group? +

Yes. Add a rate_limit block to the create_people_group 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_people_group completely? +

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

create_people_group is provided by the Mycase MCP server (rosenadvertising/mycase-mcp). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.