API for action with file upload

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1

I’m trying to follow this doc to set up my API for my action: https://www.palantir.com/docs/foundry/api/v1/ontology-resources/actions/apply-action

However, my action has a file attachment as an input, and it doesn’t seem that I can use multipart/form-data as the Content-Type.

{
    "errorCode": "INVALID_ARGUMENT",
    "errorName": "InvalidContentType",
    "errorInstanceId": "92ce44bf-718c-4932-bacf-902af620a7dc",
    "parameters": {
        "expectedContentType": "application/json"
    }
}

How do I set up this API?

2

Attachment properties for actions need to be uploaded separately before applying the action.

Please see this endpoint on how to upload an attachment and recieve an attachment rid

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The action will take a string property that corresponds to the attachment RID from the upload request.

3

Is there any way to automate the action to trigger after using the upload attachments API