I'm not a developer, but I am a content creator who's spent far more time than I'd like to admit tinkering with just about every social media API I could find. That's partly because I'm helping shape how we talk about Buffer's API, and partly — OK, mostly — because I've been vibe coding my own little tools and workflows for months. As a self-identified tools nerd, I can't resist trying and stress-testing new products as soon as they launch.
One big thing I've discovered along the way: saying the social media API landscape has exploded over the past year barely captures it. There are now plenty of players in this space, most of them under two years old, and nearly all designed with developers and AI agent builders front and center.
But social media APIs aren't all the same. Some are tailored to solo devs hacking together a single product, while others are built for agencies juggling dozens of client profiles. Some ship with MCP servers you can plug straight into Claude or your preferred agent; others skip that entirely. So there's no universal "best" social media API — it really depends on what you're building.
So let's dig in: here's a breakdown of every social media API that's worth your attention right now, plus my take on what each one does best.
Jump to a section:
The short answer
Key takeaways
What is a social media API?
API vs. MCP server: what's the difference?
Quick comparison: the 10 best social media APIs for developers
Buffer
Ayrshare
Postiz
Upload-Post
Zernio
Phyllo
Post…