Cursor api

API Request Missing Required Headers After Refactoring

API requests generated by Cursor are missing required headers, causing requests to fail with 400 or 401 errors. The server requires specific headers like Authorization or Content-Type, but they're no longer being sent.

Header setup code may have been removed or restructured incorrectly.

Error Messages You Might See

401 Unauthorized 400 Bad Request Missing Authorization header Invalid Content-Type
401 Unauthorized400 Bad RequestMissing Authorization headerInvalid Content-Type

Common Causes

  1. Authorization header removed or incorrect format (missing 'Bearer ' prefix)
  2. Content-Type header not set for POST/PUT requests
  3. Custom headers removed from fetch/axios default config
  4. Header key name changed (e.g., 'X-API-Key' vs 'x-api-key')
  5. Header value set to undefined or null

How to Fix It

Verify header format: Authorization: 'Bearer ' + token. Set Content-Type: 'application/json'. Use axios defaults: axios.defaults.headers.common['Authorization'] = 'Bearer ' + token. Log request headers to debug: console.log(req.headers).

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Frequently Asked Questions

How do I set default headers?

axios: axios.defaults.headers.common['X-Custom'] = 'value'. fetch: new Headers({...}) passed in init object.

What's Bearer token?

HTTP auth scheme. Format: 'Authorization: Bearer token'. Server checks token after 'Bearer ' prefix.

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