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Stay Otter

by stayotter.com · remote · no sign-in to list tools · v1.1.0 · published by com.stayotter

Verified stays with receipts: live totals, the street checked on the map, and booking watches.

Changes · 3
CompareRegistry entry

7 tools: 3 change things and 4 only read.

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 stay-otter https://stayotter.com/api/mcp

Tools

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

7 tools

Changes things 3Claude Code: ask
  • city_picksInstant and free: the latest finished standard search for one of the covered cities (a two-adult stay about a month out, refreshed daily).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.
    • The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
    Description, as the server wrote it
    Instant and free: the latest finished standard search for one of the covered cities (a two-adult stay about a month out, refreshed daily). Covered: Austin, Lisbon, Kyoto, Mexico City, New York, Paris, Barcelona, Montreal, San Diego, Edinburgh, Honolulu, London, South Lake Tahoe, Sedona, Holbox, Niagara-on-the-Lake, Bentonville, Knoxville, Asheville, Canmore, Coeur d'Alene, Broken Bow, Lancaster, Ann Arbor. For other places or specific dates use search_stays.

    Annotations the server declares

    • readOnlyHint: true
  • set_alertStarts the otter's daily re-run of a finished search, emailing the key's account when a verified pick drops 5% or $50 or the cheapest pick disappears.No findings

    Why it is in this group

    • The name "set_alert" says "set": a word for a change.
    Description, as the server wrote it
    Starts the otter's daily re-run of a finished search, emailing the key's account when a verified pick drops 5% or $50 or the cheapest pick disappears. Needs a key (stayotter.com/connect); the first alert is free with an account, more are Pro.

    Annotations the server declares

    • readOnlyHint: false
    • idempotentHint: false
  • watch_bookingFor a stay already booked with free cancellation: pass the confirmation email's text.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
    For a stay already booked with free cancellation: pass the confirmation email's text. The otter keeps five facts (property, dates, total paid, deadline, where it was booked), discards the rest (no names, confirmation numbers or card details), reads the property's rate every morning and emails the account when a cheaper rate it can still cancel into appears (5% or $50), with reminders 7, 3 and 1 days before the deadline. Hotels booked direct are read across sellers through Google's rate list. Needs a key; free and unlimited. The otter never books or cancels.

    Annotations the server declares

    • readOnlyHint: false
    • idempotentHint: true
    • openWorldHint: true
Only reads 4Claude Code: allow
  • check_listingReads one place the traveller found themselves into the receipts a pick carries: where it is, whether the street is quiet or lively, bars, cafés and restaurants within a ten-minute…No findings

    Why it is in this group

    • The description's first verb is "read": a word for reading.
    Description, as the server wrote it
    Reads one place the traveller found themselves into the receipts a pick carries: where it is, whether the street is quiet or lively, bars, cafés and restaurants within a ten-minute walk, the distance to a spot they name and, with dates, the lowest total and the lowest they can still cancel, each read now. Takes a Booking.com, Vrbo or Expedia property page, or a hotel's name and city; Airbnb pages cannot be read. Needs a key: one check a day free, Pro up to thirty. 5 to 60 seconds.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • get_activitiesTop-rated things to do on Viator for a search's spot and dates (what the trip is for first, the city's best otherwise), with a second place to look when the row is thin.No findings

    Why it is in this group

    • The name "get_activities" says "get": a word for reading.
    Description, as the server wrote it
    Top-rated things to do on Viator for a search's spot and dates (what the trip is for first, the city's best otherwise), with a second place to look when the row is thin. Pass a searchId from search_stays or city_picks; intent overrides the search's own.

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true
  • get_stayThe card for a search by searchId: finished picks with receipts, or its running status.No findings

    Why it is in this group

    • The name "get_stay" says "get": a word for reading.
    Description, as the server wrote it
    The card for a search by searchId: finished picks with receipts, or its running status. Free and instant. Use it to finish a search_stays call that returned 'running', or to read a shared stay (https://stayotter.com/stay/s_…).

    Annotations the server declares

    • readOnlyHint: true
  • search_staysLive search of Booking.com, Vrbo and Expedia (hotel rooms) for the dates and party, verified against the map.No findings

    Why it is in this group

    • The name "search_stays" says "search": a word for reading.
    Description, as the server wrote it
    Live search of Booking.com, Vrbo and Expedia (hotel rooms) for the dates and party, verified against the map. Returns up to three picks (best overall, best value, closest) with receipts and tracked openUrl links. Takes 30 to 90 seconds; returns status 'running' with a searchId if it is not done within waitSeconds. Three searches on the house per connection, then a key (free account: 10 a month; Pro: unlimited).

    Annotations the server declares

    • readOnlyHint: true
    • openWorldHint: true

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 1.1.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http stay-otter https://stayotter.com/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": [
      "mcp__stay-otter__search_stays",
      "mcp__stay-otter__get_stay",
      "mcp__stay-otter__get_activities",
      "mcp__stay-otter__check_listing"
    ],
    "ask": [
      "mcp__stay-otter__city_picks",
      "mcp__stay-otter__set_alert",
      "mcp__stay-otter__watch_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 stay-otter. Review it before you use it.