ihg_modify_reservation · Mcp Ihg MCP: Risk & Policy

WHAT IT DOES

What ihg_modify_reservation does on Mcp Ihg

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

WHY IT NEEDS A POLICY

Why ihg_modify_reservation needs a policy

This tool creates or modifies data in a reversible manner (write category). Severity is high because misuse could alter customer bookings, generate unexpected charges, modify guest rosters, or create operational issues for hotel stays — affecting both the user and hotel operations.

From the tool's definition Tool description states it 'Modify an existing IHG reservation (dates, guests, special requests, room type)' — modifying reservation parameters is a reversible write operation.

Attacks that exploit this kind of access

Recommended rule Ready

Verdict

ihg_modify_reservation Rate-limited

ihg_modify_reservation 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": {
    "ihg_modify_reservation": {
      "limits": [
        {
          "counter": "ihg_modify_reservation_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 Mcp Ihg, so you can run agents against it safely.

FAQ

Questions about ihg_modify_reservation

What does the ihg_modify_reservation tool do? +

Modify an existing IHG reservation (dates, guests, special requests, room type). It is categorised as a Write tool in the Mcp Ihg MCP Server, which means it can create or modify data. Consider rate limits to prevent runaway writes.

How do I enforce a policy on ihg_modify_reservation? +

Register the Mcp Ihg MCP server in PolicyLayer and add a rule for ihg_modify_reservation: 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 Mcp Ihg. Nothing to install.

What risk level is ihg_modify_reservation? +

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

Can I rate-limit ihg_modify_reservation? +

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

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

ihg_modify_reservation is provided by the Mcp Ihg MCP server (markswendsen-code/mcp-ihg). PolicyLayer sits as a proxy in front of this server to enforce policies before tool calls reach the server.