Fair Fare

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io.github.GoodTurnStudio/fairfarev1.0.0

What a taxi, Uber or Lyft should cost, airport pickup rules, and overcharge checks.

Maps & Travel

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best_time_to_ride Read-only

Cheapest time of day to take a ride. For New York, typical Uber and Lyft prices for a trip of a given length at every hour of the week, from the city's trip records, with the cheapest and most expensive hours today and whether waiting saves money. For other cities, how the taxi meter rates change by time of day.

citystring

Tariff city id, for example nyc, london or chicago. Defaults to nyc.

whenstring

When the trip starts, in local time: now (the default), a time like 18:30 or 6pm, or a date and time like 2026-10-09T18:30.

milesnumber

Trip length in miles (New York only). Defaults to 3.

Tools (8)

best_time_to_ride

read-only

Argument	Type	Description
city	string	Tariff city id, for example nyc, london or chicago. Defaults to nyc.
when	string	When the trip starts, in local time: now (the default), a time like 18:30 or 6pm, or a date and time like 2026-10-09T18:30.
miles	number	Trip length in miles (New York only). Defaults to 3.

Input schema (JSON)

{
  "type": "object",
  "required": [],
  "properties": {
    "city": {
      "type": "string",
      "description": "Tariff city id, for example nyc, london or chicago. Defaults to nyc."
    },
    "when": {
      "type": "string",
      "description": "When the trip starts, in local time: now (the default), a time like 18:30 or 6pm, or a date and time like 2026-10-09T18:30."
    },
    "miles": {
      "type": "number",
      "description": "Trip length in miles (New York only). Defaults to 3."
    }
  },
  "additionalProperties": false
}

check_driver_licence

Check a New York taxi or ride-app driver's licence. Whether a TLC licence number is active on New York City's daily open data for for-hire (Uber, Lyft, car service) and taxi drivers, its expiry date, and, if a name is given, whether it matches (the name on the licence is never returned). Other cities get the official way to check.

read-only

Argument	Type	Description
city	string	City: nyc (live check) or another city id for guidance. Defaults to nyc.
name	string	Optional name the driver gave, to check it matches.
number	string	The TLC licence number shown in the app or on the partition card.

Input schema (JSON)

{
  "type": "object",
  "required": [],
  "properties": {
    "city": {
      "type": "string",
      "description": "City: nyc (live check) or another city id for guidance. Defaults to nyc."
    },
    "name": {
      "type": "string",
      "description": "Optional name the driver gave, to check it matches."
    },
    "number": {
      "type": "string",
      "description": "The TLC licence number shown in the app or on the partition card."
    }
  },
  "additionalProperties": false
}

check_fare

Was I overcharged? Check a fare that was paid. Compares what was paid with the official meter tariff, the airport flat fare or New York's typical Uber and Lyft prices for the same trip and hour, gives a verdict (fair, high or overcharged), the next steps for that company or city regulator, and a short message to send asking for a refund.

read-only

Argument	Type	Description
to	string	Where it ended.
city	string	Tariff city id, when giving miles instead of from and to.
from	string	Where the trip started.
kind	string	Kind: taxi, uber, lyft, bolt or minicab. Defaults to taxi.
paid*	string	What was paid, without the tip, for example 48.50.
when	string	When the trip starts, in local time: now (the default), a time like 18:30 or 6pm, or a date and time like 2026-10-09T18:30.
miles	number	Trip length in miles, instead of from and to.
minutes	number	Trip time in minutes, if known.

check_fleet_file

Check a cab firm's fleet.json. Reads a taxi or minicab firm's fleet.json (the open format at fairfare.pages.dev/fleet that lets assistants find and book local firms directly) and lists anything to fix.

read-only

Argument	Type	Description
url*	string	The https address of the fleet.json file.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "url"
  ],
  "properties": {
    "url": {
      "type": "string",
      "description": "The https address of the fleet.json file."
    }
  },
  "additionalProperties": false
}

estimate_fare

What a trip should cost by taxi, Uber or Lyft. Distance and time by road between two places, the licensed taxi meter fare with the extras that apply at that hour, any airport flat fare, typical Uber and Lyft prices in New York, airport pickup rules, a pre-booked transfer option for airport trips, and links that open Uber, Lyft or public transport directions with the trip filled in.

read-only

Argument	Type	Description
to*	string	Where the trip ends, in the same forms as from.
city	string	Optional tariff city id from list_cities, when the place names are ambiguous.
from*	string	Where the trip starts: an address, landmark, postcode, airport code (JFK, LHR) or lat,lon.
when	string	When the trip starts, in local time: now (the default), a time like 18:30 or 6pm, or a date and time like 2026-10-09T18:30.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "from",
    "to"
  ],
  "properties": {
    "to": {
      "type": "string",
      "description": "Where the trip ends, in the same forms as from."
    },
    "city": {
      "type": "string",
      "description": "Optional tariff city id from list_cities, when the place names are ambiguous."
    },
    "from": {
      "type": "string",
      "description": "Where the trip starts: an address, landmark, postcode, airport code (JFK, LHR) or lat,lon."
    },
    "when": {
      "type": "string",
      "description": "When the trip starts, in local time: now (the default), a time like 18:30 or 6pm, or a date and time like 2026-10-09T18:30."
    }
  },
  "additionalProperties": false
}

get_airport

Getting a ride at an airport. Where Uber and Lyft pick up, how the taxi rank works, flat taxi fares, drop-off and pickup charges for cars, meet and greet rules, public transport into the city with prices, and tips, from each airport's own pages.

read-only

Argument	Type	Description
code*	string	Airport code or name, for example JFK, LAX, LHR or Heathrow.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "code"
  ],
  "properties": {
    "code": {
      "type": "string",
      "description": "Airport code or name, for example JFK, LAX, LHR or Heathrow."
    }
  },
  "additionalProperties": false
}

get_taxi_tariff

A city's official taxi meter tariff. The starting charge, the rate per mile or kilometre, the waiting rate, time-of-day tariffs, extras and surcharges, flat fares, tipping custom and the official source.

read-only

Argument	Type	Description
city*	string	Tariff city id from list_cities, for example nyc, chicago, london or birmingham.

Input schema (JSON)

{
  "type": "object",
  "required": [
    "city"
  ],
  "properties": {
    "city": {
      "type": "string",
      "description": "Tariff city id from list_cities, for example nyc, chicago, london or birmingham."
    }
  },
  "additionalProperties": false
}

list_cities

Cities and airports covered. Every city whose official taxi tariff is on file and every airport with ground transport facts.

read-only

No arguments.

Input schema (JSON)

{
  "type": "object",
  "required": [],
  "properties": {},
  "additionalProperties": false
}