集成Shippo API创建运单时Rates未返回问题求助

Hey there, let's break down this tricky issue where your Shippo API shipment creates successfully but returns an empty rates array—yet the exact same request works in Postman. Here are some actionable steps to debug:

• Compare Request Headers Line by Line
  It's easy to miss subtle differences in headers between your code and Postman. Double-check:

  • Is the Content-Type header set correctly to application/json?
  • Does your Authorization header match exactly what's in Postman? No extra spaces, truncated tokens, or typos?
    Export Postman's request as a cURL command, then compare it against the raw request your code generates. Even tiny discrepancies here can cause unexpected behavior.

• Validate Request Body Field Formats
  Even if the fields look the same, data types might differ. For example:

  • Is the weight value a number (like 5) instead of a string ("5")?
  • Are date fields formatted correctly (e.g., YYYY-MM-DD)?
    Serialize your code's request body to a JSON string and compare it directly with the body you're using in Postman—look for any mismatched types or formatting that might be throwing off Shippo's backend.

• Inspect the Full API Response
  Don't just look at the rates array! Shippo's response might include hidden messages or errors fields that hint at why no rates were returned. For example, an address might have failed validation silently (but still allowed the shipment to be created). Print the entire response object in your code to uncover these clues.

• Check Environment Consistency
  Ensure both your code and Postman are hitting the same Shippo environment:

  • Sandbox: https://api-sandbox.goshippo.com
  • Production: https://api.goshippo.com
    The sandbox sometimes requires specific test addresses or carrier accounts to return sample rates—if Postman is using production but your code is sandboxed, that could explain the gap.

• Log Everything and Retry
  Enable full logging for your API requests: capture all headers, the complete request body, response status code, and full response body. Compare these logs side-by-side with Postman's request details. If you can't spot the difference, try retrying the request a few times—occasionally transient API issues can cause empty rate responses.

内容的提问来源于stack exchange，提问作者Mohsin Abbas