composer require "dwolla/dwolla-php"

use Dwolla;
use Dwolla\Models\Components;

$sdk = Dwolla\Dwolla::builder()
    ->setSecurity(
        new Components\Security(
            clientID: 'YOUR_CLIENT_ID',
            clientSecret: 'YOUR_CLIENT_SECRET',
        )
    )
    ->build();

pip install dwollav2

import dwollav2

client = dwollav2.Client(
  key=os.environ["DWOLLA_APP_KEY"],
  secret=os.environ["DWOLLA_APP_SECRET"],
  environment="sandbox",
)

$ Install-Package Dwolla.Client -Version 6.0.1

var client = DwollaClient.Create(isSandbox: true);

var tokenRes = await client.PostAuthAsync<AppTokenRequest, TokenResponse>(
 new Uri($"{client.AuthBaseAddress}/token"),
 new AppTokenRequest {Key = "...", Secret = "..."});

$ gem install dwolla_v2

require "dwolla_v2"

client = DwollaV2::Client.new(
  key: ENV["DWOLLA_APP_KEY"],
  secret: ENV["DWOLLA_APP_SECRET"],
  environment: :sandbox
)