Working example of custom API call for AWS S3

Questions
1

Although the AWS S3 node supports Custom API call through the HTTP Request node, I couldn’t find a working example on how to do so.
For instance, I’d like to do a HEAD operation on a file in a bucket, I’ve added an HTTP Request node, selected the predefined credential for AWS, set the URL as the file https://<BUCKET>.s3.amazonaws.com/<PATH_TO_FILE>, expecting that the signature parameters would be magically appended to the URL, but I just get a simple “400 rejected - Bad request - please check your parameters”.
If I switch method to GET, I get a different error:

`AuthorizationHeaderMalformed`The authorization header is malformed; the region 's3' is wrong; expecting 'us-east-1'

My credential has the region properly filled in.
I’m probably missing something obvious here.

2

It looks like your topic is missing some important information. Could you provide the following if applicable.

  • n8n version:
  • Database (default: SQLite):
  • n8n EXECUTIONS_PROCESS setting (default: own, main):
  • Running n8n via (Docker, npm, n8n cloud, desktop app):
  • Operating system:
3

Check if that style is supported in the docs, as I see most methods do not use full URLs.

You can also open the dev console (f12 > console tab) and see what headers/body have been sent via HTTP Request node

4

I tried to use /<BUCKET>/<PATH_TO_FILE> in the URL, but then I get Invalid URL from the HTTP node.
I understand that the URL in the format https://<BUCKET>.s3.amazonaws.com/<PATH_TO_FILE> is correct, however there’s still something missing.

5

This topic was automatically closed 90 days after the last reply. New replies are no longer allowed.