> For the complete documentation index, see [llms.txt](https://doc.duaer.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://doc.duaer.com/integrations/builtin/app-nodes/n8n-nodes-base.s3.md).

# Use S3 in Duaer

Use S3 in a Duaer digital organization to call that service. Save the connection under Credentials, then pick a resource and operation on the node. Node note: Sends data to any S3-compatible service
## S3 in Duaer

S3 is an app node in Duaer for calling that service’s API from a digital organization.

The product’s node note is: Sends data to any S3-compatible service.

## Credentials and parameters

Credential notes are under [S3 credentials](/integrations/builtin/credentials/s3.md).

Parameters accept expressions. Tool parameters that an AI Agent should fill use $fromAI. When a run fails, read the error on the node output first.
## Questions

### How do you add S3 to a Duaer digital organization?

Open the node panel on the Duaer canvas, search for S3, and drop it onto the digital organization. Connect it after a trigger or a previous node. If auth is required, save the credential first and select it on the node.

### What should you check first when S3 fails in Duaer?

Read the error text on that node’s output, then confirm the credential still works and required parameters are filled. For app nodes, also check permissions and quota on the provider side.