Instagram photos, carousels, Reels and Stories through PostFlow.
Business and Creator accounts, connected with Instagram Login (no Facebook Page needed). Personal accounts can’t publish through any app; switch the account type in Instagram first.
Content types
Section titled “Content types”| Id | Format | Media | Kinds | Aspect (w/h) | Video length | Max size (image / video) | Caption max |
|---|---|---|---|---|---|---|---|
ig_image |
Image | 1 | image | 0.8–1.91 | – | 8 MB / – | 2,200, 30 hashtags |
ig_carousel |
Carousel | 2–10 | image, video | 0.8–1.91 | 3–60 s | 8 MB / 100 MB | 2,200, 30 hashtags |
ig_reel |
Reel | 1 | video | 0.01–10 | 3–900 s | – / 300 MB | 2,200, 30 hashtags |
ig_story |
Story | 1 | image, video | – | 3–60 s | 8 MB / 100 MB | none |
Rules PostFlow checks
Section titled “Rules PostFlow checks”- Photos must be JPEG between 4:5 and 1.91:1. In the app, other files get a one-click convert or crop.
- Captions up to 2,200 characters, 30 hashtags and 20 @mentions.
- Carousels take 2 to 10 photos or videos.
- Stories have no caption and can’t take a first comment.
Options
Section titled “Options”| Option | Notes |
|---|---|
firstComment, followUps |
Posted as comments by the account right after publishing (not Stories). |
shareToFeed |
Reels: also show in the feed grid (default on). |
instagram.collaborators |
Up to 3 usernames invited as collaborators (without the @). |
instagram.aiGenerated |
Labels the post as made with AI. |
cover |
Reels: a moment in the video (offsetMs) or an image (mediaId). |
Publishing
Section titled “Publishing”Instagram fetches the file from PostFlow and processes it before publishing; videos can take a few minutes. Instagram allows 100 API posts per account in 24 hours (a carousel counts once). Over that, PostFlow retries later.
Comments, messages and metrics
Section titled “Comments, messages and metrics”- Comments: read, reply, hide (Comments and messages). Instagram only takes replies on a thread’s first comment, so replies to replies go there.
- Direct messages: read and reply within 24 hours of the person’s last message.
- Metrics: reach, views, likes, comments, shares and saves, 24 hours and 7 days after publishing.