Get the file from repository in BitBucket via API with AppPassword - .NET

I need to get the file from repository via api from bitbucket using the appPassword.

I generated the appPassword with read and admin for projects and repository and try to use it in my .net application but always have an exeption Forbiden(403).

My code

try
{
 var username = _settings.Username;
 var appPassword = _settings.AppPassword;
 var url = _settings.ConfigFileUrl;

 var authToken = Convert.ToBase64String(Encoding.ASCII.GetBytes($"{username}: {appPassword}"));

 using var client = new HttpClient();
 client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", authToken);

 var response = await client.GetAsync(url);
 response.EnsureSuccessStatusCode();

 var jsonResponse = await response.Content.ReadAsStringAsync();

}
catch (Exception ex)
{
}

In userName I use not my email but my usrname from account settings. In appPassword I use generated password from screenshot. In url I use url to my final file in repository

In catch section get always the exception - Forbiden 403

What is wrong?

To download a file from a Bitbucket repository using the Bitbucket REST API and an app password in a .NET application, you can use the HttpClient class with basic authentication.

Make sure you:

1. Use the correct API endpoint:

https://api.bitbucket.org/2.0/repositories/{workspace}/{repo_slug}/src/{commit_or_branch}/{filepath}

2. Provide your Bitbucket username and app password using Basic Auth headers.

Here’s a working example in C# that demonstrates how to retrieve the contents of a file from a Bitbucket repository:

using System;
using System.Net.Http;
using System.Net.Http.Headers;
using System.Text;
using System.Threading.Tasks;

class Program
{
    static async Task Main()
    {
        string username = "your-bitbucket-username";
        string appPassword = "your-app-password";
        string repoOwner = "your-username-or-workspace";
        string repoSlug = "your-repository-name";
        string branchOrCommit = "main"; // or specific commit hash
        string filePath = "path/to/your/file.txt"; // path within the repo

        string url = $"https://api.bitbucket.org/2.0/repositories/{repoOwner}/{repoSlug}/src/{branchOrCommit}/{filePath}";

        using (HttpClient client = new HttpClient())
        {
            var credentials = Convert.ToBase64String(Encoding.ASCII.GetBytes($"{username}:{appPassword}"));
            client.DefaultRequestHeaders.Authorization = new AuthenticationHeaderValue("Basic", credentials);

            HttpResponseMessage response = await client.GetAsync(url);

            if (response.IsSuccessStatusCode)
            {
                string fileContent = await response.Content.ReadAsStringAsync();
                Console.WriteLine("File content:");
                Console.WriteLine(fileContent);
            }
            else
            {
                Console.WriteLine($"Failed to get file. Status: {response.StatusCode}");
                string error = await response.Content.ReadAsStringAsync();
                Console.WriteLine("Error response:");
                Console.WriteLine(error);
            }
        }
    }
}

Replace the placeholder values (your-bitbucket-username, your-repository-name, etc.) with your actual data. This script will print the file content if successful or print the error if it fails.

\> Note: If your file is binary (e.g., an image or PDF), use response.Content.ReadAsByteArrayAsync() instead of ReadAsStringAsync() to handle the data correctly.