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Fare Deals

by GoodTurnStudio · remote · no sign-in to list tools · v1.4.0 · published by GitHub user GoodTurnStudio

Cheap flights from any city, to one place or anywhere, with the cheapest days to fly.

Final · 1Changes · 1
CompareRegistry entry

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

Scanned Oct 21, 2026

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

claude mcp add --transport http faredeals https://goodturn-mcp.pages.dev/faredeals/mcp

Findings

Matches of fixed checks, with the text they matched.

1 warn
  • Warncheapest_dates

    The server marks "cheapest_dates" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

    Matched text

    annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; 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.

3 tools

Can't be undone 1Claude Code: ask
  • cheapest_datesCheapest departure days for a route in a month.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 "cheapest_dates" read-only (readOnlyHint: true), and its own name, description or input give the class "irreversible".

      Matched text

      annotations: {"readOnlyHint":true,"destructiveHint":false,"idempotentHint":true,"openWorldHint":true}; The input addresses people (input.to): what it sends cannot be taken back.

      What this check looks for
    Description, as the server wrote it
    Cheapest departure days for a route in a month. Cheap flights from any city, to one place or anywhere, with the cheapest days to fly. Fares are the cheapest Aviasales travellers found in the last 48 hours. The live price is on the booking page.

    Annotations the server declares

    • title: Cheapest departure days for a route in a month
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
Changes things 1Claude Code: ask
  • look_up_placeLook up a city or airport code.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
    Look up a city or airport code. Cheap flights from any city, to one place or anywhere, with the cheapest days to fly. Fares are the cheapest Aviasales travellers found in the last 48 hours. The live price is on the booking page.

    Annotations the server declares

    • title: Look up a city or airport code
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: true
    • openWorldHint: true
Only reads 1Claude Code: allow
  • find_dealsCheapest recent fares from a city, to a place or anywhere.No findings

    Why it is in this group

    • The name "find_deals" says "find": a word for reading.
    Description, as the server wrote it
    Cheapest recent fares from a city, to a place or anywhere. The say field is a ready-made answer.

    Annotations the server declares

    • title: Cheapest recent fares from a city, to a place or anywhere
    • readOnlyHint: true
    • destructiveHint: false
    • idempotentHint: 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 1.4.0. Values in angle brackets are yours to fill in.

claude mcp add --transport http faredeals https://goodturn-mcp.pages.dev/faredeals/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__faredeals__find_deals"
    ],
    "ask": [
      "mcp__faredeals__cheapest_dates",
      "mcp__faredeals__look_up_place"
    ],
    "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 faredeals. Review it before you use it.