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Airfare Brain

com.airfarebrain/airfare-brain · v1.0.2

New (7 days)Tools changed (7 days)

Measured by MCP Station

Last check	Reachable
Checked at	—
Check success 7 / 30 days	—
First-try success 30 days	—
Median response	—
Lookups 30 days	—
Authentication	No auth
MCP version	2025-06-18
Rank score	—
Declared risk	Read-only (all tools declare readOnlyHint)
Capabilities declared	tools
Tool definitions	4 tools · with description 100% · input schema is an object 100% · read/destructive hints 100%

True cost of flight extras (bags, seats, fees) on 21 airlines in Europe and North America, sourced.

streamable-http · https://airfarebrain.com/mcp

claude mcp add --transport http airfare-brain https://airfarebrain.com/mcp

{
  "mcpServers": {
    "airfare-brain": {
      "url": "https://airfarebrain.com/mcp"
    }
  }
}

get_capabilities
What Airfare Brain covers: airlines, how fees are researched and dated, what it does NOT do (no live fares, no booking), and the sister tool for car hire.
list_airlines
List every airline with a fee table: name, IATA code, the date its fees were checked, and its page.
airline_fees
One airline's published extra fees (bags, seats, priority, check-in, changes, payment), each with the price range, when bought (at booking / later / airport), how it is charged, its source URL and the date checked. Optionally filter by category.
true_cost
The true cost of a flight on one airline. Pass `fare` (the total for the whole party, from a flight-search tool or the person) to get fare + extras; without it you get the extras alone. Extras = what the person chooses (cabin bag, checked bag by kg, seat, priority, infants) for their party and trip,

Website · JSON · Text for agents · Registry updated 2026-10-23