cwsi.net Fare Classes & Mileage Calculators

Server Details

Airline fare classes, fare comparisons and miles earned, from cwsi.net's charts and calculators.

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Status: Healthy
Last Tested: 2026-10-10 13:35
Transport: Streamable HTTP · MCP 2025-11-25
URL

TDQS

A4/5.0

Scored 2026-10-05 16:35 across 8 tools

Disambiguation5/5

Each tool targets a clearly distinct airline or operation: the six calculate_* tools are differentiated by airline, while compare_fare_classes and get_fare_classes serve separate comparison vs. lookup purposes. There is no meaningful overlap that would cause misselection.

Naming Consistency5/5

All names follow a consistent snake_case verb_noun pattern: calculate_[airline]_[miles|points], compare_fare_classes, and get_fare_classes. The miles/points variation reflects actual loyalty-program terminology rather than inconsistent naming.

Tool Count5/5

Eight tools is well-scoped for the domain: six carrier-specific mileage calculators plus two fare-class lookup/comparison tools. Each tool earns its place without redundancy.

Completeness4/5

Core US airline mileage calculators and fare-class lookup are covered, but Hawaiian lacks a dedicated mileage calculator and compare_fare_classes excludes JetBlue and Hawaiian. These are minor gaps that can be partially worked around through get_fare_classes.

Available Tools

12 tools

calculate_alaska_milesAlaska Atmos Rewards Calculator

Read-onlyIdempotent

Inspect

Estimate what a Alaska Airlines ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with an Atmos Rewards card. none = No; AS = Ascent (+3 per $1); SU = Summit (+3 per $1); BU = Business (+3 per $1).	none
`fare`	No	Fare. 200 = First, full fare (J); 175 = First (C); 150a = First, discount (D, I); 150b = Main, full fare (Y, B); 125 = Main (H, K); 100 = Main, discount (M, L, V, S, N, Q, O, G); 0 = Saver (X). Only applies to some choices of the other fields; ignored otherwise.	100
`kind`	No	Fare type. paid = Paid fare (Main, Premium, First); basic = Basic or Saver (earns 0). Only applies to some choices of the other fields; ignored otherwise.	paid
`segs`	No	Segments. Each flight (segment) earns 500 points. Only applies to some choices of the other fields; ignored otherwise.
`when`	No	When do you fly?. 2026 = Through Dec 31, 2026; 2027 = From Jan 1, 2027. Members choose a method from Oct 1, 2026; it applies to flights from Jan 1, 2027.	2026
`miles`	No	Miles flown. The flight distance in miles. Only applies to some choices of the other fields; ignored otherwise.
`price`	Yes	Price paid (before taxes and fees) in US dollars. Needed for your card, or for the price method from 2027.
`legacy`	No	Saver booked early or flown soon. 1 = Yes (30%); 0 = No (earns 0). Saver earns 30% when booked before Jun 11, 2026, or flown through Jul 31, 2026. Otherwise it earns 0. Only applies to some choices of the other fields; ignored otherwise.	0
`method`	No	Your earning method. dist = Distance (1 per mile); price = Price paid (5 per $1); seg = Segments (500 per segment). Only applies to some choices of the other fields; ignored otherwise.	dist
`status`	No	Your Atmos status. none = Member (No status); SV = Silver (+25%); GD = Gold (+50%); PT = Platinum (+100%); TT = Titanium (+150%).	none

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_allegiant_pointsAllways Rewards Calculator

Read-onlyIdempotent

Inspect

Estimate what a Allegiant Air ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with the Allways Rewards Visa. none = No; AV = Yes (3 card points per $1).	none
`price`	Yes	Qualified spend on the itinerary (without taxes and fees) in US dollars. What you paid Allegiant for the flight package, less taxes, fees, vouchers and promo codes.

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_american_milesAmerican AAdvantage Calculator

Read-onlyIdempotent

Inspect

Estimate what a American Airlines ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with an AAdvantage card. none = No; MU = MileUp (+2 per $1); PS = Platinum Select (+2 per $1); GB = Globe (+3 per $1); EX = Executive (+4 per $1).	none
`fare`	No	Fare type. 1 = Standard (Main Cabin and above); 0 = Basic Economy.	1
`price`	Yes	Ticket price in US dollars. Base fare plus carrier-imposed fees, without government taxes.
`status`	No	Your AAdvantage status. none = None; GL = Gold (+40%); PL = Platinum (+60%); PP = Platinum Pro (+80%); EP = Executive Platinum (+120%).	none

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_breeze_pointsBreezy Rewards Calculator

Read-onlyIdempotent

Inspect

Estimate what a Breeze Airways ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with the Breeze Easy Visa. none = No; BV = Yes (card points).	none
`fare`	No	Bundle. NF = No Flex Fare (1 per $1); NI = Nice (2 per $1); NR = Nicer (5 per $1); NT = Nicest (5 per $1).	NI
`price`	Yes	Fare and trip add-ons paid to Breeze (without taxes and fees) in US dollars. Booked with Breeze: the fare plus bags and seat selection. Government taxes and fees do not earn.
`status`	No	Your Breezy Rewards level. Member = Member; Breezy 1 = Breezy 1 (+25%); Breezy 2 = Breezy 2 (+50%); Breezy 3 = Breezy 3 (+75%); Breezy Club = Breezy Club (+100%).	Member

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_delta_milesDelta SkyMiles Calculator

Read-onlyIdempotent

Inspect

Estimate what a Delta Air Lines ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with a Delta Amex card. none = No; BL = Blue; GO = Gold; PL = Platinum; RE = Reserve.	none
`fare`	No	Fare type. CR = Classic (or Refundable); EX = Extra; PB = Basic (Comfort, First, Premium Select, One); BA = Main Basic (Basic Economy). Delta Comfort, First, Premium Select and Delta One earn as Classic or Extra, whichever you bought. Their Basic fares earn as Basic.	CR
`price`	Yes	Ticket price in US dollars. Base fare plus carrier charges, without government taxes and fees (shown on your receipt).
`status`	No	Your Medallion status. none = None; FO = Silver; GM = Gold; PM = Platinum; DM = Diamond.	none

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_frontier_milesFrontier Miles Calculator

Read-onlyIdempotent

Inspect

Estimate what a Frontier Airlines ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Frontier Airlines Mastercard cardmember. none = No; FC = Yes (Cardmember rate).	none
`fare`	No	Fare. BF = Basic Fare (basic rate); EC = Economy Bundle (bundle rate); PR = Premium Bundle (bundle rate); BZ = Business Bundle (bundle rate).	BF
`price`	Yes	Amount paid to Frontier (fare, bundle, bags and seats; not taxes) in US dollars. Eligible Frontier purchases on this booking. Taxes and change or cancel fees do not earn.
`status`	No	Your Frontier status. Member = Member; Elite Silver = Elite Silver; Elite Gold = Elite Gold; Elite Platinum = Elite Platinum; Elite Diamond = Elite Diamond.	Member

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_jetblue_pointsJetBlue TrueBlue Calculator

Read-onlyIdempotent

Inspect

Estimate what a JetBlue ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with a JetBlue card. none = No; JB = JetBlue Card (+3 per $1); JP = Plus (+6 per $1); JBZ = Business (+6 per $1); JPR = Premier (+6 per $1).	none
`fare`	No	Fare. base = Base (1 per $1); standard = Standard (3 per $1); flex = Flex (3 per $1). Only applies to some choices of the other fields; ignored otherwise.	standard
`cabin`	No	Cabin. main = Main; evenmore = EvenMore; mint = Mint.	main
`mfare`	No	Fare. standard = Standard (3 per $1); flex = Flex (3 per $1). Mint is sold as Standard or Flex. No Base fare in Mint. Only applies to some choices of the other fields; ignored otherwise.	standard
`price`	Yes	Fare paid (before taxes and fees) in US dollars. Points and tiles are earned on the fare before taxes and fees.
`direct`	No	Booked on jetblue.com or the app. 1 = Yes; 0 = No (Travel agent or other site). Booking direct earns the same points again.	1
`status`	No	Your TrueBlue status. General Member = General Member (No status); Mosaic 1 = Mosaic 1 (+3 per $1); Mosaic 2 = Mosaic 2 (+3 per $1); Mosaic 3 = Mosaic 3 (+4 per $1); Mosaic 4 = Mosaic 4 (+5 per $1).	General Member

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_southwest_pointsSouthwest Rapid Rewards Calculator

Read-onlyIdempotent

Inspect

Estimate what a Southwest Airlines ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with a Southwest card. none = No; PL = Plus (+2 per $1); PR = Premier (+3 per $1); PY = Priority (+4 per $1).	none
`fare`	No	Fare type. CE = Choice Extra (14 per $1); CP = Choice Preferred (10 per $1); CH = Choice (6 per $1); BA = Basic (2 per $1).	CH
`price`	Yes	Ticket price (base fare, without taxes and fees) in US dollars. Shown on your receipt as the base fare, before taxes and fees.
`status`	No	Your Rapid Rewards status. Base = Base (No status); A-List = A-List (+25%); A-List Preferred = A-List Preferred (+100%).	Base
`flights`	No	Flights on this ticket. A-List also needs 20 flights (A-List Preferred 40), counted in place of points.

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_sun_country_pointsSun Country Rewards Calculator

Read-onlyIdempotent

Inspect

Estimate what a Sun Country Airlines ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with the Sun Country Visa. none = No; SV = Yes (3 card points per $1).	none
`price`	Yes	Amount paid (without taxes and fees) in US dollars. Qualifying Sun Country purchases on this booking. Taxes, fees, in-flight purchases and insurance do not earn.
`status`	No	Your status. Member = Member; Plus = Plus (+1 per $1).	Member
`channel`	No	Where you booked. D = Sun Country (2 per $1); O = Third party (1 per $1).	D

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

calculate_united_milesUnited MileagePlus Calculator

Read-onlyIdempotent

Inspect

Estimate what a United Airlines ticket earns (miles or points, and status credit where it applies), using cwsi.net's calculator and the airline's published rules. Unofficial.

ParametersJSON Schema

Name	Required	Description	Default
`card`	No	Paying with a United card. none = No; CM = Cardmember (+3 per $1); EX = Explorer (+6 per $1); QU = Quest (+7 per $1); CL = Club (+8 per $1); GW = Gateway (+5 per $1); DB = Gateway Debit (+4 per $1). Cardmember is a United card that you are not paying with.	none
`fare`	No	Fare type. ST = Standard (Economy and above); BE = Basic Economy.	ST
`price`	Yes	Ticket price (fare plus carrier-imposed charges, without government taxes) in US dollars. Shown on your receipt as the fare plus carrier-imposed charges.
`status`	No	Your MileagePlus status. none = General (No status); PS = Silver; PG = Gold; PP = Platinum; 1K = 1K.	none
`flights`	No	Flights on this ticket. Each flight (segment) earns 1 PQF. Basic Economy earns none.

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`notes`	Yes
`inputs`	Yes
`airline`	Yes
`headline`	Yes
`progress`	No
`breakdown`	Yes
`calculator`	Yes

compare_fare_classesCompare two fare classes across airlines

Read-onlyIdempotent

Inspect

Side-by-side comparison of two fare classes, e.g. Delta K vs United M, from cwsi.net's fare charts. Covers American, Alaska, Delta, Southwest and United.

ParametersJSON Schema

Name	Required	Description
`fare_a`	Yes	Fare letter (or Southwest fare name) on the first airline.
`fare_b`	Yes	Fare letter (or Southwest fare name) on the second airline.
`airline_a`	Yes	First airline: AA/American, AS/Alaska, DL/Delta, WN/Southwest or UA/United.
`airline_b`	Yes	Second airline: AA/American, AS/Alaska, DL/Delta, WN/Southwest or UA/United.

Output Schema

ParametersJSON Schema

Name	Required	Description
`a`	Yes
`b`	Yes
`link`	Yes

get_fare_classesLook up airline fare classes

Read-onlyIdempotent

Inspect

What an airline fare class (booking code) means and what it earns, from cwsi.net's fare charts. Give a fare letter (e.g. Delta K) or a Southwest fare name, or leave fare_class out to list them all. Covers Alaska, Allegiant, American, Breeze, Delta, Frontier, Hawaiian, JetBlue, Southwest, Sun Country and United.

ParametersJSON Schema

Name	Required	Description	Default
`airline`	Yes	Airline code or name: AS/Alaska, G4/Allegiant, AA/American, MX/Breeze, DL/Delta, F9/Frontier, HA/Hawaiian, B6/JetBlue, WN/Southwest, SY/Sun Country, UA/United.
`fare_class`	No	A fare letter such as "K", or a Southwest fare name such as "Choice". Leave out to list every fare class.

Output Schema

ParametersJSON Schema

Name	Required	Description
`link`	Yes
`fares`	Yes
`airline`	Yes
`columns`	Yes
`airline_name`	Yes

Tool Schema Changelog

Recent tool additions, removals, and schema changes observed during successful MCP inspections.

1 tool updateOct 10, 2026

Changedcalculate_frontier_miles1 field changed

changedInput schema / properties / card / description

Previous value: -"Frontier Airlines World Mastercard cardmember. none = No; FC = Yes (Cardmember rate)."New value: +"Frontier Airlines Mastercard cardmember. none = No; FC = Yes (Cardmember rate)."

3 tool updatesOct 10, 2026

Addedcalculate_breeze_points
Addedcalculate_sun_country_points

Changedget_fare_classes1 field changed

changedInput schema / properties / airline / description

Previous value: -"Airline code or name: AS/Alaska, G4/Allegiant, AA/American, DL/Delta, F9/Frontier, HA/Hawaiian, B6/JetBlue, WN/Southwest, UA/United."New value: +"Airline code or name: AS/Alaska, G4/Allegiant, AA/American, MX/Breeze, DL/Delta, F9/Frontier, HA/Hawaiian, B6/JetBlue, WN/Southwest, SY/Sun Country, UA/United."

3 tool updatesOct 10, 2026

Addedcalculate_allegiant_points
Addedcalculate_frontier_miles

Changedget_fare_classes1 field changed

changedInput schema / properties / airline / description

Previous value: -"Airline code or name: AS/Alaska, AA/American, DL/Delta, HA/Hawaiian, B6/JetBlue, WN/Southwest, UA/United."New value: +"Airline code or name: AS/Alaska, G4/Allegiant, AA/American, DL/Delta, F9/Frontier, HA/Hawaiian, B6/JetBlue, WN/Southwest, UA/United."

1 tool updateOct 9, 2026

Changedcalculate_delta_miles1 field changed

changedInput schema / properties / fare / description

Previous value: -"Fare type. CR = Classic (or Refundable); EX = Extra; PB = Basic (First, Premium Select, One); BA = Main Basic (Basic Economy). Delta Comfort, First, Premium Select and Delta One earn as Classic or Extra, whichever you bought."New value: +"Fare type. CR = Classic (or Refundable); EX = Extra; PB = Basic (Comfort, First, Premium Select, One); BA = Main Basic (Basic Economy). Delta Comfort, First, Premium Select and Delta One earn as Classic or Extra, whichever you bought. Their Basic fares earn as Basic."

8 tool updatesOct 9, 2026
- Changedcalculate_alaska_miles1 field changed
  - addedInput schema / properties / price / maximum
```
Added value: +1000000
```
- Changedcalculate_american_miles1 field changed
  - addedInput schema / properties / price / maximum
```
Added value: +1000000
```
- Changedcalculate_delta_miles1 field changed
  - addedInput schema / properties / price / maximum
```
Added value: +1000000
```
- Changedcalculate_jetblue_points1 field changed
  - addedInput schema / properties / price / maximum
```
Added value: +1000000
```
- Changedcalculate_southwest_points1 field changed
  - addedInput schema / properties / price / maximum
```
Added value: +1000000
```
- Changedcalculate_united_miles1 field changed
  - addedInput schema / properties / price / maximum
```
Added value: +1000000
```
- Changedcompare_fare_classes4 fields changed
  - addedInput schema / properties / airline_a / maxLength
```
Added value: +64
```
  - addedInput schema / properties / airline_b / maxLength
```
Added value: +64
```
  - addedInput schema / properties / fare_a / maxLength
```
Added value: +64
```
  - addedInput schema / properties / fare_b / maxLength
```
Added value: +64
```
- Changedget_fare_classes2 fields changed
  - addedInput schema / properties / airline / maxLength
```
Added value: +64
```
  - addedInput schema / properties / fare_class / maxLength
```
Added value: +64
```
8 tool updatesOct 5, 2026
- First observedcalculate_alaska_miles
- First observedcalculate_american_miles
- First observedcalculate_delta_miles
- First observedcalculate_jetblue_points
- First observedcalculate_southwest_points
- First observedcalculate_united_miles
- First observedcompare_fare_classes
- First observedget_fare_classes

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