Forming the /oauth/token call

Imported Google Group message. Original thread at: Redirecting to Google Groups Import Date: 2016-01-19 21:16:41 +0000.
Sender:S. Alexander Zaman.
Date:Thursday, 25 June 2015 19:27:09 UTC+1.

Hi Martin,

I am having a bit of trouble getting the /oauth/token call to respond. I looked at Aaron Parecki Oauth guide that you recommended and have been trying to follow the advice from the following discussion.!searchin/tyk-community-support/$2Foauth$2Ftoken/tyk-community-support/0FuyaV4zt18/UuC8tiNmP68J

Do you know what might be going wrong here?

To test I’m using postman.

  1. I call the authorize-client call to get a token

POST /db7c60750d8f4bc1628285c9327cd5cd/tyk/oauth/authorize-client/ HTTP/1.1
x-tyk-authorization: 352d20ee67be67f6340b4c0605b044b7
Cache-Control: no-cache
Postman-Token: 3d85fde1-ad9a-fa04-b57a-9b341a455259
Content-Type: application/x-www-form-urlencoded



  1. I went to a base_url converter ( to convert the string “{{client_id}}{{client_secret}}” to base64.

  2. I tried to make the following oauth/token call and got an invalid response

=== REQUEST===

POST /db7c60750d8f4bc1628285c9327cd5cd/oauth/token HTTP/1.1
Authorization: Basic Nzc0NThhNjk5NmJhNGFlOTRlYTAyODY0NGQwNzA3NjNNekExTVRFd016RXRNalUzTWkwME5qWXlMVFpqWTJRdFlUZzFaVGxtWldZeE16Vms
Cache-Control: no-cache
Postman-Token: a5ece429-6d43-838f-bf81-b39fdd016dd8
Content-Type: application/x-www-form-urlencoded


=== RESPONSE ===
{“error”:“invalid_request”,“error_description”:“The request is missing a required parameter, includes an invalid parameter value, includes a parameter more than once, or is otherwise malformed.”}

Do you have any advice on how I can get the token to authorize?

Best regards,

Imported Google Group message.
Sender:Martin Buhr.
Date:Friday, 26 June 2015 09:21:28 UTC+1.

Hi Alex,

Went back to my postman test scripts, and tested against my dev machine, here’s what I have managed ot get to work:


POST http://localhost:8080/LISTEN_PATH/oauth/token/

Post Params (url-encoded in post body):

grant_type = authorization_code

client_id =CLIENT_ID

redirect_uri =

Post Headers:

Authorization: Basic base64Encode(CLIENT_ID:CLIENT_SECRET)

Looking at your request, you’ve got everything ok. The only things that look odd is that you have url-encoded the redirect URI, you don’t need to do that if you are using postman, it will encode it when it sends it (otherwise you risk double-encoding), More importantly (and I htink this is the problem), I also notice you are missing a slash at the end of your oauth/token/ URL, you will need to put the slash in otherwise it redirects, which will lose the POST data and then fail with the generic error.

I hope that helps!


Imported Google Group message.
Date:Thursday, 25 June 2015 19:46:30 UTC+1.


Hmm well it looks like you are missin some parameters :slight_smile:

Check the token request section in this tutorial, it looks like you are missing a few, don’t have a of atm so can only check my test scripts tomorrow.

Have you taken a look at the OAuth tests in the repo?


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Imported Google Group message.
Sender:S. Alexander Zaman.
Date:Thursday, 25 June 2015 21:10:15 UTC+1.

(Looks like my response did not show up on the message board. Sorry for the Duplicate Martin.)

Yeah the parameter that I didn’t have which is in the tutorial is “client_secret”. I had removed it following advice from the discussion between you and pascal, and in your test cases. I tried putting it back in but it didn’t change the response.

I tried looking at the tests and seeing what didn’t match up but I didn’t find any notable differences. One thing I did notice was that the discussion mentioned the authorization header was formed doing a base64 encoding combining client_id and client_secret. was there anything delimiting between the two? your test seems to suggest not but I am not sure.

One thing that I incorrectly mentioned above is that the base64 encoding is actually created by putting together client_id and client_secret with a ‘:’ (colon) in between. That’s how pascal and your tests did it. I had made that fix but it is still giving me the same problems.

Authorization: Basic Nzc0NThhNjk5NmJhNGFlOTRlYTAyODY0NGQwNzA3NjM6TXpBMU1URXdNekV0TWpVM01pMDBOall5TFRaalkyUXRZVGcxWlRsbVpXWXhNelZr
(encoded by base64 on “{{client_id}}:{{client_secret}}” )

grant_type = authorization_code
client_id = 77458a6996ba4ae94ea028644d070763
redirect_uri =
code = KOKf4uDdQ5uMF__rPRNZXw

If you have time tomorrow to help out that be great. Thanks for looking into my issue!


Imported Google Group message.
Sender:S. Alexander Zaman.
Date:Friday, 26 June 2015 15:59:15 UTC+1.

OMG I forgot the slash again! Massive apologies for my stupidity. The call seems to be working fine now after I put the ‘/’ (slash) suffix
Thanks Martin.


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