Like post

Like (or react to) a post as a connected account. Supported platforms: LinkedIn, Twitter/X, Facebook, YouTube, Bluesky, and Instagram in limited release (see below). Threads, TikTok and Pinterest expose no like endpoint in their APIs and return 400. Reddit returns 400 too, pointing at POST /v1/accounts/{accountId}/reddit-vote, which covers upvote, downvote and clear on both posts and comments.

The account does not have to be the one that published the post, which is what makes executive engagement possible: pass an exec's accountId and the brand post's ID. postId accepts either a Zernio post ID or the platform's native post ID. A Zernio post ID resolves to the entry for accountId, falling back to the post's single entry on the same platform (two entries on that platform is a 400, so pass the native ID).

LinkedIn requires the w_member_social_feed / w_organization_social_feed scopes, which are not retroactive: accounts connected before those were requested get a 403 with code linkedin_reconnect_required until the user reconnects the account. YouTube spends 50 quota units per call.

Instagram is in LIMITED RELEASE and not generally available: the call needs instagram_manage_engagement, which Meta has so far granted this app only under Standard Access, so it works for app admins, developers and testers of our Meta app and returns a 403 with code PLATFORM_BETA_RESTRICTED for every other account. That restriction lifts when Meta App Review grants Advanced Access; the constraints below apply once it does.

Instagram covers feed images, reels and carousels (stories and private-account media are not likeable). Only an account connected through Facebook Login can be granted instagram_manage_engagement: an Instagram Login connection returns a 400 with code instagram_likes_require_facebook_login, and an account whose token predates the permission returns a 403 with code reconnect_required. Instagram also enforces a burst limit of 50 like or unlike calls per 5 seconds per Instagram account, and exceeding it locks that account out of the like API for an hour, so pace bulk loops.