Get temporary S3 credentials for direct-to-storage upload

Returns temporary AWS credentials scoped to upload files directly to
the manifest's destination storage bucket under the
O{orgId}/D{datasetId}/{manifestId}/* prefix. Agents use these
credentials to skip the legacy upload-bucket staging hop.

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Query Params
string
required

dataset node id

Body Params

Manifest node ID to scope credentials to

string
required

The manifest node ID returned from POST /manifest

Responses

Language
Credentials
Header
URL
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Response
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