A very simple demonstration of TCGPlayer's API.

simple_tcgplayer.py

import os
import requests # pip install requests

TCGPLAYER_API_URL = 'https://api.tcgplayer.com'
TCGPLAYER_API_VERSION = 'v1.39.0'

# https://able.bio/rhett/how-to-set-and-get-environment-variables-in-python--274rgt5
TCGPLAYER_PUBLIC_KEY = os.environ.get('TCGPLAYER_PUBLIC_KEY')
TCGPLAYER_PRIVATE_KEY = os.environ.get('TCGPLAYER_PRIVATE_KEY')


# All code based on the guide from here: https://docs.tcgplayer.com/docs/getting-started
if __name__ == '__main__':
  # Step 1. Get an access token from TCGPlayer. This will usually be good for about 2 weeks, however you should 
  # check the token_response_data for the value 'expires_in' to learn when your token will stop working.
  payload = {
    'grant_type': 'client_credentials',
    'client_id': TCGPLAYER_PUBLIC_KEY,
    'client_secret': TCGPLAYER_PRIVATE_KEY,
  }
  r = requests.post(
    TCGPLAYER_API_URL + '/token',
    data=payload,
  )
  assert r.status_code == 200
  token_response_data = r.json()

  print('Token Received:')
  print(token_response_data)

  # Step 2. Format the value we need to use for the Authorization header
  access_token = token_response_data['token_type'] + ' ' + token_response_data['access_token']

  # Step 3. Use that token in every request to the API from now on
  r = requests.get(
    TCGPLAYER_API_URL + '/' + TCGPLAYER_API_VERSION + '/catalog/categories?limit=100',
    headers={
      'Authorization': access_token
    }
  )
  assert r.status_code == 200
  categories_response_data = r.json()

  print('Categories Received:')
  print(categories_response_data)