Start with Reddit’s access requirements
Follow Reddit’s current application access and authentication guidance. Its Data API documentation requires OAuth authentication and describes throttling and blocking of unidentified clients. Public visibility in a browser does not guarantee that an unauthenticated JSON endpoint is available to your application.
Read Reddit’s Data API guidance.
Separate browser CORS from an upstream rejection
- Missing CORS headers: the upstream can return data, but your browser cannot read the response. A proxy may help with this request path.
- 401 or 403: check authentication and permitted upstream access. Proxying does not turn a rejected request into an authorized one.
- 429: respect Reddit’s rate limits and retry guidance. CORSPROXY does not remove provider quotas.
Keep OAuth credentials in the appropriate request path
Use your backend for confidential client credentials and server-side data fetching. If you route an approved server integration through CORSPROXY, use Production and preserve the required upstream authentication headers. Check the response status before parsing JSON.
When the proxy helps
Use CORSPROXY after you have confirmed that the upstream request is allowed and that browser access is the remaining problem. Test the exact URL and inspect the returned status in the playground. An unauthenticated .json URL is not a reliable substitute for an approved integration.
Troubleshoot upstream access errors or check your CORSPROXY request.