Home / MCP registry index / net.cwsi/fares
cwsi.net Fare Classes & Mileage Calculators
net.cwsi/fares in the official MCP registry.
Endpoint https://mcp.cwsi.net/mcp.
The registry describes it as: Airline fare classes, fare comparisons and miles earned, from cwsi.net's charts and calculators.
We read its 56 tools on 2026-10-27. Nothing in them matched our tool-poisoning rules.
A clean read means these rules found nothing, not that the server is harmless. A server can change its tools at any time, which is why the index reads it again every week.
Tools it advertises
get_fare_classes compare_fare_classes calculate_delta_miles calculate_american_miles calculate_united_miles calculate_alaska_miles calculate_southwest_points calculate_jetblue_points calculate_frontier_miles calculate_allegiant_points calculate_sun_country_points calculate_breeze_points calculate_cathay_pacific_miles calculate_british_airways_avios calculate_air_canada_points calculate_lufthansa_miles calculate_flying_blue_miles calculate_korean_air_miles calculate_japan_airlines_miles calculate_singapore_airlines_miles calculate_ana_miles calculate_qantas_points calculate_qatar_airways_avios calculate_turkish_airlines_miles calculate_virgin_atlantic_points calculate_eva_air_miles calculate_iberia_avios calculate_finnair_avios calculate_aeromexico_points calculate_avianca_lifemiles calculate_copa_airlines_miles calculate_tap_air_portugal_miles calculate_sas_points calculate_lot_polish_airlines_miles calculate_air_new_zealand_airpoints calculate_air_india_points calculate_air_china_miles calculate_china_eastern_miles calculate_china_airlines_miles calculate_thai_airways_miles calculate_ita_airways_miles calculate_royal_air_maroc_miles calculate_malaysia_airlines_enrich_points calculate_air_europa_miles calculate_vietnam_airlines_miles calculate_aegean_airlines_miles calculate_aerolineas_argentinas_miles calculate_royal_jordanian_miles calculate_srilankan_airlines_miles calculate_south_african_airways_miles calculate_croatia_airlines_miles calculate_shenzhen_airlines_miles calculate_xiamen_airlines_miles calculate_etihad_guest_miles get_airport_lounges calculate_flight_distance
Run this server? Show the check in your README
The badge reflects the latest weekly read: 
[](https://lazaretto.dev/mcp-registry/net-cwsi-fares)How this was checked
Lazaretto connects to the endpoint the way any MCP client does, asks the server to introduce itself and list its tools, and reads every name, description, parameter schema and server instruction for tool poisoning: hidden directive blocks, orders to read local secrets, parameters built to carry secrets or the conversation out, orders that redirect another server's tools, and invisible characters. It never calls a tool. What we found across the registry.
To run the same check every time Claude Code adds a server, install the free lazaretto-guard plugin. Browse every server in the index.