Publish to Facebook · Adeli API

curl --fail-with-body -X POST "https://app.tryadeli.com/api/v1/posts" \ -H "Authorization: Bearer $ADELI_API_KEY" \ -H "Content-Type: application/json" \ -d '{ "platform": "facebook", "accountId": "00000000-0000-0000-0000-000000000000", "message": "Hello", "image": { "contentType": "image/jpeg", "base64": "<base64 JPEG>" } }'

{ "id": "facebook_post_00000000-0000-0000-0000-000000000000_100000000000000_200000000000000", "platform": "facebook", "accountId": "00000000-0000-0000-0000-000000000000", "profileId": "00000000-0000-4000-8000-000000000001", "providerId": "100000000000000_200000000000000", "caption": "Hello", "media": [{ "type": "IMAGE", "url": "https://...", "thumbnailUrl": "https://..." }], "permalink": "https://www.facebook.com/...", "engagement": { "likes": null, "comments": null }, "publishedAt": "2026-04-01T12:00:00.000Z" }

Four shapes, chosen by which media field you send rather than by a kind string, so an impossible combination cannot be expressed. As with Instagram, media is staged on Adeli's HTTPS media host because Meta fetches it by URL.

platform"facebook"Required
accountIduuidRequired: A connected Facebook Page in your organization.
messagestring: Up to 2200 characters. The caption shown with the post.
imageobject: One photo — contentType and base64. Publishes synchronously.
imagesobject[]: 2–10 photos, published as one multi-photo post. Synchronous.
reelobject: One vertical video, published as a Reel. Asynchronous.
videoobject: One video, published to the Page feed. Asynchronous.
titlestring: Only valid alongside video. Up to 255 characters.

A photo response is the same normalized post Instagram returns, with platform: "facebook". A Reel or feed video returns 202 with a publishId; pass it to Facebook video status.

A Page must be chosen first

A Facebook account in pending_page_selection has no Page token and cannot publish. Every write against it returns 409 page_not_selected until your customer picks a Page. See Connect.