This project is no longer supported. There's a fully supported and regularly updated C# library that implements access to a veriety of password managers, including 1Password. Please check out Password Manager Access.

This is unofficial 1Password API.

This library provides access to the 1Password online vault. This library does not decode any locally stored keychains, only what's available online.

This library provides a very high level mode of operations. It simply downloads all the available vaults, parses and decrypts them. Only web accounts are supported. The API is pretty trivial and it's easy to use. Simply call OnePassword.Client.OpenVaults with a few parameters and inspect the output. Here's a quick example (for the complete example program please to refer to example/Program.cs):

using OnePassword;
var vaults = Client.OpenAllVaults(username, password, accountKey, uuid);
foreach (var vault in vaults)
{
    Console.WriteLine("{0} {1} {2}", vault.Id, vault.Name, vault.Description);
    for (int i = 0; i < vault.Accounts.Length; ++i)
    {
        var account = vault.Accounts[i];
        Console.WriteLine("  - {0}: {1} {2} {3} {4} {5} {6}",
                          i + 1,
                          account.Id,
                          account.Name,
                          account.Username,
                          account.Password,
                          account.Url,
                          account.Note);
    }
}

username, password and the accountKey are, obviously, your credentials to the online vault. uuid is a device ID from which the access is made. This ID should be unique for each new client. A new ID will be registered with the server and it should be reused on subsequent calls. It's possible to use a new ID every time but this will pollute the list of trusted devices on the server. To generate a new uuid please use provided Client.GenerateRandomUuid funciton.

The library alters some global parameters that might affect the application. Please take a look at the static constructor of the HttpClient class. ServicePointManager.SecurityProtocol is changed to support SSL3 and TLS 1.0 through 1.2. Otherwise 1password.com refuses to open a secure connection.

The library is released under the MIT license.