Plaid.NET is a .netstandard library for interacting with Plaid's banking APIs. See their documentation here.

Plaid.NET is available at nuget.org.

Package Manager PM > Install-Package Acklann.Plaid.NET

You can make all calls to Plaid's API via the Acklann.Plaid.PlaidClient class.

var client = new PlaidClient();
// Retrieving a user's recent transactions.
var result = await client.FetchTransactionsAsync(new GetTransactionsRequest()
{
    Secret = "your_secret",
    ClientId = "your_client_id",
    AccessToken = "your_token",
    ...
});

For contributors who want to run the unit tests; there is secrets.json file that is intentionally excluded from the project. The file stores your Plaid sandbox keys. The Helper.cs utilize this file. Also there is a project called Plaid.Demo; run the project to generate a access token.

"plaid":
  {
    "secret": null,
    "client_id": null,
    "public_key": null,
    "access_token": null
  }

Plaid.NET currently targets Plaid API version 2019-05-29.