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POST
/
v1
/
uploads
/
{id}
/
complete
Complete an upload
curl --request POST \
  --url https://app.loops.so/api/v1/uploads/{id}/complete \
  --header 'Authorization: Bearer <token>'
{
  "success": true,
  "emailAssetId": "cmp2cz4mn0oru0izztre5fgob",
  "finalUrl": "https://images.vialoops.com/cmp2cnlf600yz0f042m792otk/cmp2cz4mn0oru0izztre5fgob.jpg"
}

Documentation Index

Fetch the complete documentation index at: https://loops.so/docs/llms.txt

Use this file to discover all available pages before exploring further.

Content API endpoints are currently in an open alpha and are subject to change.

​
Request

Call this endpoint after uploading the file to the presignedUrl returned by Create an upload.

​
Path parameters

​
id
string
required
The emailAssetId returned when the upload was created.

​
Response

​
Success

​
success
boolean
required
​
emailAssetId
string
required
The ID of the uploaded asset.
​
finalUrl
string
required
The public URL of the uploaded asset. Use this URL in LMX image elements when updating an email message.

​
Error

A 400 Bad Request is returned if the upload id is missing or the uploaded file has an unsupported content type. A 404 Not Found is returned if the upload does not exist. If the API key is invalid (or content API is not enabled for your team), a 401 Unauthorized is returned.
​
success
boolean
required
​
message
string
required
An error message describing what went wrong.
{
  "success": true,
  "emailAssetId": "cmp2cz4mn0oru0izztre5fgob",
  "finalUrl": "https://images.vialoops.com/cmp2cnlf600yz0f042m792otk/cmp2cz4mn0oru0izztre5fgob.jpg"
}
Last modified on May 27, 2026