Query parameters to filter through /players endpoint:

name: search for letters contained within the player’s name or a full name (without space)
minCa, maxCa: Minimum/maximumCurrent Ability (0-200)
minPa, maxPa: Minimum/maximumPotential Ability (0-200)
minAge, maxAge: Minimum/maximum Age (15 - 55)
contractTo: End of contract year
minAskingPrice, maxAskingPrice: Minimum/maximum asking price. €348M means player is not for sale (number in millions, “100” for €100M)
nationality: First and secondary nationalities, 3 letter country abbreviations (ger, por, bra)
position: Primary and Secondary positions (ST ©)

Attributes:
All attributes between 1 and 20. Must be prefixed with “max” to filter for values below that value, or “min” for higher values.

Ada: Adaptability
Aer: Aerial Reach
Agg: Aggression
Agi: Agility
Amb: Ambition
Ant: Anticipation
Bal: Balance
Bra: Bravery
Cmd: Command of Area
Com: Communication
Cmp: Composure
Cons: Consistency
Cont: Controversy
Cor: Corners
Cnt: Concentration
Cro: Crossing
Dec: Decisions
Det: Determination
Dirt: Dirtiness
Dri: Dribbling
Ecc: Eccentricity
Fin: Finishing
Fir: First Touch
Fla: Flair
Fre: Freekicks
Han: Handling
Hea: Heading
ImpM: Important Matches
InjPr: Injury Proneness
Jum: Jumping Reach
Kic: Kicking
Ldr: Leadership
Lon: Long Shots
Loy: Loyalty
Lth: Long Throws
Mar: Marking
Nat: Natural Fitness
Otb: Off the Ball
Ovo: One vs. Ones
Pac: Pace
Pas: Passing
Pen: Penalties
Pos: Positioning
Pun: Punching (Tendency)
Refl: Reflexes
Pres: Pressure
Prof: Professionalism
Spor: Sportsmanship
Sta: Stamina
Str: Strength
Tea: Teamwork
Tec: Technique
Tck: Tackling
Temp: Temperament
Thr: Maximum
Tro: Rushing Out (Tendency)
Vers: Versatility
Vis: Vision
Wor: Workrate