A little script for pulling people's mojang account history from their current username

mcuserinfo.py

import sys
import requests
from base64 import b64decode
import json
import time

if len(sys.argv ) != 2:
    print("Usage: mcuserinfo.py <username>")
    exit(0)

username = sys.argv[1]

userprofile = requests.get(f"https://api.mojang.com/users/profiles/minecraft/{username}").json()
uid = userprofile["id"]
username = userprofile["name"]

print(f"Full username: {username}")
print(f"User ID: {uid}")

history = requests.get(f"https://api.mojang.com/user/profiles/{uid}/names").json()

print("Name history:")
for name in history:
    name = name["name"]
    print(f" - {name}")

useraccount:dict = requests.post("https://api.mojang.com/profiles/minecraft", data=username).json()

isPremium = not useraccount.get("dmeo", False)
mojang = not useraccount.get("legacy", False)

print(f"Premium account: {isPremium}")
print(f"Mojang account: {mojang}")

skininfo = requests.get(f"https://sessionserver.mojang.com/session/minecraft/profile/{uid}").json()

if "error" in skininfo:
    print("Pausing to reduce API load")
    time.sleep(8)
    skininfo = requests.get(f"https://sessionserver.mojang.com/session/minecraft/profile/{uid}").json()

texture = json.loads(b64decode([i for i in skininfo["properties"] if i["name"] == "textures"][0]["value"]))

cape = texture["textures"].get("CAPE", "") != ""
skin = texture["textures"]["SKIN"]["url"]

print(f"User skin: {skin}")
print(f"User has cape?: {cape}")