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Error trying to retrieve access_token through OAuth2.0

tommythongsythavong May 30, 2022

I am trying to get an access token through OAuth2.0 but everytime I try to do it, I just receive the error below.

Error:: "Cannot use client_credentials with a consumer marked as \"public\". Calls for auto generated consumers should use urn:bitbucket:oauth2:jwt instead.", "error": "invalid_grant"}


I am trying to send a POST request through HTTPClient but I am not sure what I am doing wrong here.

Code below:

private static async Task<Token> GetEligibleToken()
var client = new HttpClient();
string baseAddress = "";

string grant_type = "client_credentials";
string client_id = "id";
string client_secret = "secret";

var form = new Dictionary<string, string>
{"grant_type", grant_type},
{"client_id", client_id},
{"client_secret", client_secret},

HttpResponseMessage tokenResponse = await client.PostAsync(baseAddress, new FormUrlEncodedContent(form));
var jsonContent = await tokenResponse.Content.ReadAsStringAsync();
Token tok = JsonConvert.DeserializeObject<Token>(jsonContent);
return tok;

1 answer

0 votes
Mark C
Atlassian Team
Atlassian Team members are employees working across the company in a wide variety of roles.
June 1, 2022

Hi @tommythongsythavong

Welcome to the community.

Based on the error message, I believe you'll need to make your consumer keys private.
You'll need to tick the "This is a private consumer" checkbox similar to the screenshot below:
Here are the exact steps:

  1. Go to your workspace -
  2. Click Settings
  3. Click OAuth consumers (Under Apps and Features)
  4. Click the 3-dotted-icon next to your consumer keys > Click Edit
  5. Lastly, tick the "This is a private consumer" checkbox to make it private

Try again after that and let me know how it goes.

Mark C

John Marsh January 6, 2023

Hi @Mark C


I don't know if that worked for the OP but it has just worked for me.





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