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Rate Ranger

by rateranger.io · remote · no sign-in to list tools · v1.0.0 · published by io.rateranger

Watch a hotel's price after your user booked it, and email them when it drops enough to rebook.

Changes · 2
CompareRegistry entry

2 tools: 2 change things.

Scanned Oct 21, 2026

No check matched anything in the tool definitions. No finding is not a safety guarantee. How the checks work.

claude mcp add --transport http hotel-price-monitor https://www.rateranger.io/api/mcp

Tools

Open a tool for its reasons and full description. Descriptions are the publisher's own words, shown as they are.

2 tools

Changes things 2Claude Code: ask
  • check_hotel_bookingCheck one booking you submitted, using the read token returned at submission.No findings

    Why it is in this group

    • Nothing in its name or description says what it does, so it is counted as a write.
    Description, as the server wrote it
    Check one booking you submitted, using the read token returned at submission. Use it to find out whether the traveller has confirmed yet: `confirmed` is false until they click the emailed link, and while it is false nothing is being monitored. Check here before telling your user their booking is being tracked.
  • submit_hotel_bookingEnrol a hotel booking the traveller has ALREADY made into free price monitoring.No findings

    Why it is in this group

    • The name "submit_hotel_booking" says "submit": a word for a change.
    Description, as the server wrote it
    Enrol a hotel booking the traveller has ALREADY made into free price monitoring. Rate Ranger watches what the hotel charges for the same dates and emails them if it drops far enough to be worth rebooking. IMPORTANT: this monitors nothing on its own. The traveller is emailed one confirmation link, and no price is checked until they click it. Tell your user to expect that email. Do not tell them the booking is being tracked until check_hotel_booking says it is. Unconfirmed bookings are deleted after 7 days. Use this only for a booking that already exists. It does not search for or make reservations.

This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.

Install

Pinned to version 1.0.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http hotel-price-monitor https://www.rateranger.io/api/mcp

Run in a terminal.

Claude Code permissions

Allow the reads, ask before a change, deny the deletes. Paste into .claude/settings.json.

.claude/settings.json
{
  "permissions": {
    "allow": [],
    "ask": [
      "mcp__hotel-price-monitor__submit_hotel_booking",
      "mcp__hotel-price-monitor__check_hotel_booking"
    ],
    "deny": []
  }
}

Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. It assumes the server is installed as hotel-price-monitor. Review it before you use it.