notify_patient · MCPDischarge MCP: Risk & Policy

WHAT IT DOES

What notify_patient does on MCPDischarge

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

WHY IT NEEDS A POLICY

Why notify_patient needs a policy

This tool performs an irreversible write action—sending an SMS message—which creates a persistent communication record in the patient's communication log. While not modifying existing data structures, it generates new data (the notification itself) and triggers an external delivery system.

From the tool's definition Tool name 'notify_patient' and description 'Send a notification message to the patient via the SMS portal' indicates it creates/sends a new communication artifact (SMS message) to a patient.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

notify_patient Rate-limited

notify_patient 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": {
    "notify_patient": {
      "limits": [
        {
          "counter": "notify_patient_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 MCPDischarge, so you can run agents against it safely.

FAQ

Questions about notify_patient

What does the notify_patient tool do? +

Send a notification message to the patient via the SMS portal. It is categorised as a Write tool in the MCPDischarge MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on notify_patient? +

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

What risk level is notify_patient? +

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

Can I rate-limit notify_patient? +

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

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

notify_patient is provided by the MCPDischarge MCP server (prashantsingh1234/mcp_project). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.