Make

1. Create a scenario and pick a trigger module.
2. Add an HTTP Make a request module. POST https://api.post-uno.com/v1/media/upload-url, then a second module that PUTs the bytes to uploadUrl.
3. Add a third module. POST https://api.post-uno.com/v1/posts with the s3Key from the PUT.
4. Add an Authorization header with Bearer YOUR_API_KEY on every module.
5. Send a raw JSON body and run the scenario once.
6. Use captionOverrides when a platform needs its own wording.

{
  "profileId": "{{1.profileId}}",
  "s3Key": "{{2.s3Key}}",
  "postType": "video",
  "caption": "{{1.caption}}",
  "captionOverrides": { "x": "{{1.shortCaption}}" },
  "platforms": ["tiktok", "youtube", "instagram"]
}

profileId is a UUID your API key owns. Copy it from profile_id on any account GET /v1/accounts returns. A profile that is not yours, missing, or not a UUID all come back as 404 { "error": "Profile not found" }.