Friday Flight Deals

by fridayflightdeals.com · remote · no sign-in to list tools · v1.0.0 · published by com.fridayflightdeals

The newest cheap flight deals from the Friday Flight Deals newsletter.

Final · 2Changes · 1

Compare Registry entry

7 tools: 2 do something that can't be undone, 1 change things and 4 only read.

Scanned Oct 21, 2026

Deletes or cancels0Claude Code: deny
Can't be undone2Claude Code: ask: see these tools
Changes things1Claude Code: ask: see these tools
Only reads4Claude Code: allow: see these tools

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

claude mcp add --transport http deals https://fridayflightdeals.com/mcp

Findings

Matches of fixed checks, with the text they matched.

3 warn

Warnopen_friday_flight_deals
The server marks "open_friday_flight_deals" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "open_friday_flight_deals" says "open": a word for a change.
What this check looks for
Warnscore_flight_deal
The server marks "score_flight_deal" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
What this check looks for
Warncheck_hidden_city_ticket
The server marks "check_hidden_city_ticket" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
Matched text
annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
What this check looks for

Tools

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

7 tools

Can't be undone 2Sends, pays, publishes or merges: once done, it cannot be taken back.Claude Code: ask

check_hidden_city_ticketAssess the risk of hidden-city ticketing: buying a ticket to a farther airport and getting off at the layover.1 finding
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "check_hidden_city_ticket" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
  What this check looks for
Description, as the server wrote it
Assess the risk of hidden-city ticketing: buying a ticket to a farther airport and getting off at the layover. Returns the saving, a verdict, deal-breakers, risks and the airline's policy.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- destructiveHint: false
score_flight_dealRate a flight price from 0 to 100 against the typical fare for that route and cabin.1 finding
Why it is in this group
- The input addresses people (input.to): what it sends cannot be taken back.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "score_flight_deal" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The input addresses people (input.to): what it sends cannot be taken back.
  What this check looks for
Description, as the server wrote it
Rate a flight price from 0 to 100 against the typical fare for that route and cabin. Use when someone asks if a fare is a good deal.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- destructiveHint: false

Changes things 1Creates or changes something that can be changed back.Claude Code: ask

open_friday_flight_dealsOpen the Friday Flight Deals app, which shows the latest cheap flight deals.1 finding
Why it is in this group
- The name "open_friday_flight_deals" says "open": a word for a change.
- The server marks it read-only (readOnlyHint: true), but an annotation never lowers a class.
Findings
- Warn
  The server marks "open_friday_flight_deals" read-only (readOnlyHint: true), and its own name, description or input give the class "write".
  Matched text
  annotations: {"readOnlyHint":true,"destructiveHint":false,"openWorldHint":false}; The name "open_friday_flight_deals" says "open": a word for a change.
  What this check looks for
Description, as the server wrote it
Open the Friday Flight Deals app, which shows the latest cheap flight deals. If you call this, do not also call get_latest_deals.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- destructiveHint: false

Only reads 4Looks things up and changes nothing.Claude Code: allow

find_route_faresShow the cheapest recent fares we track for an airport pair, by cabin, with the usual price and discount.No findings
Why it is in this group
- The name "find_route_fares" says "find": a word for reading.
Description, as the server wrote it
Show the cheapest recent fares we track for an airport pair, by cabin, with the usual price and discount. Use when someone asks what a route costs right now.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: true
- destructiveHint: false
get_booking_tipsAnswer when to book, which day is cheapest to fly and how far ahead to buy, with data-backed tips.No findings
Why it is in this group
- The name "get_booking_tips" says "get": a word for reading.
Description, as the server wrote it
Answer when to book, which day is cheapest to fly and how far ahead to buy, with data-backed tips. Optionally filter by topic keywords.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- destructiveHint: false
get_latest_dealsFetch the latest cheap flight deals from the Friday Flight Deals newsletter (title, url, date, summary) to answer a question about them.No findings
Why it is in this group
- The name "get_latest_deals" says "get": a word for reading.
Description, as the server wrote it
Fetch the latest cheap flight deals from the Friday Flight Deals newsletter (title, url, date, summary) to answer a question about them. It shows a deals widget, so skip it if open_friday_flight_deals was already called.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- destructiveHint: false
get_premium_cabin_guideTypical price, airlines, lounges and booking tips for business or first class to a destination such as japan, dubai, london, europe or hawaii.No findings
Why it is in this group
- The name "get_premium_cabin_guide" says "get": a word for reading.
Description, as the server wrote it
Typical price, airlines, lounges and booking tips for business or first class to a destination such as japan, dubai, london, europe or hawaii.
Annotations the server declares
- readOnlyHint: true
- openWorldHint: false
- destructiveHint: false

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 deals https://fridayflightdeals.com/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__deals__get_latest_deals",
      "mcp__deals__find_route_fares",
      "mcp__deals__get_premium_cabin_guide",
      "mcp__deals__get_booking_tips"
    ],
    "ask": [
      "mcp__deals__open_friday_flight_deals",
      "mcp__deals__score_flight_deal",
      "mcp__deals__check_hidden_city_ticket"
    ],
    "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 deals. Review it before you use it.

Keep track

Get told when this server's tools change: a new tool, a new description, a new class.

https://anlyon.dev/servers/com.fridayflightdeals/deals/changes.xml

An Atom feed. Works in any feed reader or Slack's RSS app.

Anlyon alternative

3 of these tools change something. Run those as governed actions.

Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.

Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.

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Source: MCP Registry · repository. Synced Oct 21, 2026, 17:55 UTC.

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