# cwsi.net Fare Classes & Mileage Calculators (net.cwsi/fares): tool descriptions scored

- tools/list taken: 2026-11-02 (UTC)
- From: [Official MCP Registry](https://registry.modelcontextprotocol.io/v0/servers/net.cwsi%2Ffares/versions/latest)
- Connected to: https://mcp.cwsi.net/mcp
- Homepage: https://cwsi.net/mcp/
- Scoring rules: v2
- Tools: 56
- Average: 66.1 / 100 (Cloudy)
- Near-identical pairs: 61

This page shows how cwsi.net Fare Classes & Mileage Calculators (net.cwsi/fares)'s tool descriptions scored, the issues found and the names of its tools and parameters. The descriptions are the server's own: read them where the copy came from.

Forecall asked the URL this server lists in the official MCP Registry for its tools/list once, on the date above, without calling any tool. The server may have changed since.

## Across the server

- Major: 56 tools. Above 40, models choose less accurately.
- Minor: 61 pairs with nearly the same description in all; the top 12 are shown.
- Minor: The server has no instructions. Say there, once, what the server is for and when to use it: Claude Code and Gemini CLI read the instructions before the tool descriptions.

## Tools

- `compare_fare_classes`: 60 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The description mentions none of its 3 or more arguments.
- `calculate_aeromexico_points`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_air_europa_miles`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_avianca_lifemiles`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_etihad_guest_miles`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_finnair_avios`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_sas_points`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_south_african_airways_miles`: 62 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_aegean_airlines_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_air_china_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_cathay_pacific_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_china_eastern_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_copa_airlines_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_eva_air_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_flight_distance`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_japan_airlines_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_korean_air_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_lufthansa_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_malaysia_airlines_enrich_points`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: The name is long (41 characters).
- `calculate_qatar_airways_avios`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_shenzhen_airlines_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_vietnam_airlines_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_virgin_atlantic_points`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_xiamen_airlines_miles`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `get_airport_lounges`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `get_fare_classes`: 65 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_allegiant_points`: 66 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_breeze_points`: 66 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_frontier_miles`: 66 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_jetblue_points`: 66 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_southwest_points`: 66 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_sun_country_points`: 66 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_air_india_points`: 67 / 100
  - Minor: No `required` list, so every argument is optional.
- `calculate_air_new_zealand_airpoints`: 67 / 100
  - Minor: No `required` list, so every argument is optional.
- `calculate_aerolineas_argentinas_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_air_canada_points`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_alaska_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_american_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_ana_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_british_airways_avios`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_china_airlines_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_delta_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_flying_blue_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_ita_airways_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_qantas_points`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_royal_air_maroc_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_royal_jordanian_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_singapore_airlines_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_srilankan_airlines_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_tap_air_portugal_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_thai_airways_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_turkish_airlines_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
- `calculate_united_miles`: 68 / 100
  - Major: Says nothing about when to use it, or when not to.
  - Minor: No `required` list, so every argument is optional.
- `calculate_croatia_airlines_miles`: 70 / 100
- `calculate_iberia_avios`: 70 / 100
- `calculate_lot_polish_airlines_miles`: 73 / 100

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