Download file HTTP status code = 404

1

Question / Problem

Hi I am using Kintone API to download attachments, here is the url:Url: https://kddi.cybozu.com/k/v1/files.json?fileKey=20250902122423E4E1FE26C7B84FE5895AAB876749FB6A237

it results in 404 error. I can fetch record successfully and the filekey is coming from my records, so it should not be authentication issue.

2

Hello and welcome to the community @cxinyu !

Based on the provided info, it looks like the endpoint is just slightly off.
You’re calling /k/v1/files.json (plural), which doesn’t exist for GET requests, so Kintone returns a 404.

The correct endpoint is:

https://{your-subdomain}.cybozu.com/k/v1/file.json?fileKey=...

A couple of common mistakes:

  • Make sure your token/user has permission to view the app/record/file field.
  • Use the fileKey from the saved record (not a temporary upload key from before the record is saved).

Lastly, it’s best not to post real fileKey values publicly.
Please consider redacting them in examples.

Hope that helps!