Trouble obtaining access token from Spotify API using authorization code

I’m having a hard time with the Spotify Web API. I can get the authorization code, but when I try to swap it for an access token, I keep getting a 400 bad request error. I’m using React with Vite for this project, which is my first time working with APIs.

Here’s what I’ve done so far:

  1. Set up the authorization code with PKCE flow
  2. Created a function to redirect to Spotify’s auth page
  3. Made another function to get the access token
  4. Set up a Home component to handle the redirect and token fetching

I’ve double-checked my code against the Spotify API docs and tutorial examples, but I can’t figure out what’s going wrong. The authorization part works fine, but the token exchange keeps failing.

Has anyone run into this issue before? Any tips on how to debug this or what I might be missing? I’ve been stuck on this for a while and could really use some help. Thanks!

hey man, i had similar issues with spotify api. make sure ur client id and redirect uri match exactly in ur app settings on spotify dev dashboard. also, check if ur sending the right grant type in the token request. sometimes its the little things that trip u up. good luck!

I’ve been down this road before, and it can be frustrating. One thing that helped me was using the ‘Authorization’ header instead of putting the client_id in the request body. Make sure you’re Base64 encoding your client_id and client_secret like this: Authorization: Basic <base64 encoded client_id:client_secret>.

Also, check your Content-Type header. It should be ‘application/x-www-form-urlencoded’. I spent hours debugging only to realize I had this wrong.

If you’re still stuck, try intercepting the network requests in your browser’s dev tools. Compare the request you’re sending with what Spotify expects. Sometimes seeing the raw data helps spot the issue.

Lastly, don’t forget to URL encode your redirect_uri. I’ve been bitten by that one before too. Keep at it, you’re close!

Having dealt with the Spotify API before, I can relate to your frustration. One often overlooked aspect is the proper handling of the state parameter. Ensure you’re generating a unique state value for each authorization request and validating it when handling the callback. This helps prevent CSRF attacks and can cause issues if not implemented correctly.

Another point to consider is the expiration of the authorization code. These codes are typically valid for only a short period, usually about 10 minutes. If you’re debugging and take too long between obtaining the code and exchanging it for a token, it might expire.

Lastly, check your server’s clock. If it’s significantly out of sync with Spotify’s servers, it can cause authentication failures. This is particularly important if you’re developing on a local machine.

Keep persevering, and don’t hesitate to reach out to Spotify’s developer support if you continue to face issues. They can sometimes provide insights specific to your account or application.

yo, been there. check ur network tab in dev tools, might catch somethin. also, triple-check ur scopes - i messed up by requestin wrong ones. if ur using axios, try fetch instead. sometimes libraries act weird. keep pushin, u’ll crack it!

I’ve worked extensively with the Spotify API, and token exchange can be tricky. First, ensure you’re using the correct endpoint for token requests (https://accounts.spotify.com/api/token). Double-check that you’re including all required parameters in your request body: grant_type, code, redirect_uri, and client_id. For PKCE flow, you also need to include code_verifier.

If you’re still getting a 400 error, it could be due to incorrect encoding of parameters or mismatched code_challenge and code_verifier. Try logging the full request details before sending to spot any discrepancies. Also, make sure your authorization code hasn’t expired – they’re only valid for a short time.

If all else fails, try using a tool like Postman to test your API calls separately from your React app. This can help isolate whether the issue is in your code or the API interaction itself.