Buffer API: One API to publish across every social platform.

Hey there@fberrez1!
We expose a single GraphQL API with a unified data model (posts, channels, organizations), so you can integrate once instead of adding separate APIs for each social network. You use the same Mutation to create, schedule, and manage posts on Instagram, LinkedIn, X, TikTok, YouTube, etc., and we handle the auth, routing, and most of the cross-platform reconciliation behind the scenes.

At the same time, not all networks are the same. Each post is tied to a specific channel type, and we validate it against that platform’s rules, returning clear, structured errors when you hit things like media constraints, text limitations, or unsupported combinations. Rate limiting is done at the buffer layer, so your integration talks to a single rate-limiting model, even if we’re managing multiple downstream APIs.

To optimize content, we also use a metadata layer: each post has a shared basic shape (text, media, set time, etc.), plus an optional metadata object that expands to per-platform fields (for example, Instagram post vs. Reels options, LinkedIn-specific link settings, YouTube-style settings). This means you can send a simple “works everywhere” payload when you want speed, and then selectively add metadata when you want to customize per network (all through the same mutation and schema).

So DR: You get a unified schema and consistent mental model, plus per-platform metadata and validation that informs you exactly what each social network will accept 🙂



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