add_client_to_case · Mycase MCP: Risk & Policy

WHAT IT DOES

What add_client_to_case does on Mycase

AI agents use add_client_to_case 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 add_client_to_case needs a policy

This tool creates or modifies case membership by associating a client with a case. It is a reversible operation (the client can be removed from the case later), so it falls under Write rather than Destructive. The severity is medium because incorrectly adding a client to a case could compromise confidentiality or case integrity, but the harm is limited to a single case relationship and can be undone.

From the tool's definition Tool name is 'add_client_to_case' and description states 'Add a client to a case with an optional role.' The verb 'Add' indicates creation or modification of a relationship/record.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

add_client_to_case Rate-limited

add_client_to_case 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": {
    "add_client_to_case": {
      "limits": [
        {
          "counter": "add_client_to_case_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 Mycase, so you can run agents against it safely.

FAQ

Questions about add_client_to_case

What does the add_client_to_case tool do? +

Add a client to a case with an optional role. 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 add_client_to_case? +

Register the Mycase MCP server in PolicyLayer and add a rule for add_client_to_case: 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 add_client_to_case? +

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

Can I rate-limit add_client_to_case? +

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

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

add_client_to_case 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.