Authorize

documented

Authorize application to access seller data.

GET /oauth2/authorizeOAuthno implementation yet0 runs

Input

client_id*

Square App Client ID

sq0idp-...

scope*

OAuth scopes

CUSTOMERS_READ+CUSTOMERS_WRITE

session

Session (true/false)

true|false

state*

State parameter

random_csrf_token

redirect_uri

Redirect URI

https://yourapp.example.com/callback

code_challenge

PKCE code_challenge

code_challenge_example

code_challenge_method

PKCE code_challenge_method

S256

Calls Square as you (your API key is your account); keychains.dev holds the credentials.