get https://api.mercury.com/api/v1/ar/attachments/
Fetch a single attachment by its ID.
The
url
field in the response is a signed S3 download URL. Because this URL expires, you should always call this endpoint — or the single attachment endpoint — to retrieve a fresh URL whenever you want to download attachments.
Response Schema
{
"id": string,
"url": string,
"fileName": string
}