The social media API for developers and AI agents.
Ship social features in minutes instead of months. One unified social media API to post, schedule, promote, and engage across 15 platforms.
No credit card required
const response = await fetch("https://zernio.com/api/v1/posts", {
method: "POST",
headers: { "Authorization": `Bearer ${ZERNIO_API_KEY}` },
body: JSON.stringify({
text: "New feature drop!",
platforms: ["twitter", "instagram", "linkedin"],
mediaUrls: ["https://example.com/demo.mp4"],
scheduledFor: "2025-01-15T09:00:00Z"
})
});
Trusted by builders at
I integrated Zernio's API and MCP into my Claude Copilot and Claude Code setup, and it filled a gap I'd been working around for a while.
Web Developer
We're integrating Zernio into our coaching app's WhatsApp inbox and love how clean the SDK is. Thank you for that.
Founder, Moving Monkey
We'd been using the HighLevel API for social posting, every post stuck in draft, a lot of hassle. Zernio has been a breeze to work with.
Founder, StandoutResults
It works flawlessly now. Superb, as always. You and the team rock, keep up the amazing work.
Developer, Meta Ads API
I use Zernio for my SaaS purplepalm.ai. Integration was incredibly easy - had everything up and running in less than an hour. The API is super straightforward.
Founder, purplepalm.ai
I love the speed and quality here, the API is awesome. I've never seen anyone ship integrations this fast.
Founder, ad-attribution SaaS
Zernio makes programmatic multi-platform posting as simple as I've ever seen it. The API is straightforward, well-documented, and it just works.
Developer
I'm building captureflow.ai on Zernio and I love the platform. Super happy to be using you guys.
Founder, captureflow.ai
I spent a long time looking for a simple way to integrate a self-hosted stack. Zernio was just perfect, and I highly recommend it.
Developer
I integrated Zernio's API and MCP into my Claude Copilot and Claude Code setup, and it filled a gap I'd been working around for a while.
Web Developer
It works flawlessly now. Superb, as always. You and the team rock, keep up the amazing work.
Developer, Meta Ads API
Zernio makes programmatic multi-platform posting as simple as I've ever seen it. The API is straightforward, well-documented, and it just works.
Developer
We're integrating Zernio into our coaching app's WhatsApp inbox and love how clean the SDK is. Thank you for that.
Founder, Moving Monkey
I use Zernio for my SaaS purplepalm.ai. Integration was incredibly easy - had everything up and running in less than an hour. The API is super straightforward.
Founder, purplepalm.ai
I'm building captureflow.ai on Zernio and I love the platform. Super happy to be using you guys.
Founder, captureflow.ai
We'd been using the HighLevel API for social posting, every post stuck in draft, a lot of hassle. Zernio has been a breeze to work with.
Founder, StandoutResults
I love the speed and quality here, the API is awesome. I've never seen anyone ship integrations this fast.
Founder, ad-attribution SaaS
I spent a long time looking for a simple way to integrate a self-hosted stack. Zernio was just perfect, and I highly recommend it.
Developer
How It Works
Go from signup to your first post, message, or ad in under 5 minutes.
- 1.Get your API key.Sign up and grab your key. Takes 30 seconds.
- 2.Connect channels.Link social accounts, WhatsApp numbers, and ad accounts via OAuth. No developer apps needed.
- 3.Launch.You just added messaging, social, and ads to your stack.
What You Can Do
One OAuth flow for every platform. No dev apps needed.
One call, 15 platforms. Text, image, video, or carousel.
Likes, reach, impressions, clicks, views. Unified.
Boost any post to a paid ad on 6 ad networks.
Posts published or failed? Get pinged. No polling.
DMs, comments, reviews. One inbox. Reply via API.
WhatsApp Numbers
Give your product a WhatsApp number.
In . We handle the regulatory paperwork.
One API call. KYC done for you. Calls and inbox included.
Number live in minutes.
Frequently Asked Questions
- How fast can I integrate Zernio compared to building custom integrations?
- └Custom integrations take 8-12 months. Zernio takes under an hour.
- Do I need to create developer apps for each platform?
- └No. We handle all developer apps, approvals, and quota limits.
- What happens when a post fails?
- └We auto-retry, then fire a webhook with the reason. No silent failures, no polling.
- Is Zernio white-label friendly?
- └Yes. Your users never see Zernio branding.
- Will posting through Zernio get my accounts banned or reduce reach?
- └No. We only use official platform APIs, so your posts are treated exactly like native posts.
- Can Zernio handle thousands of client accounts?
- └Yes. Scales to unlimited accounts, no changes needed.
- Can AI agents use Zernio?
- └Yes. Zernio ships an MCP server with 280+ tools. Point Claude, Cursor, or any MCP client at it and your agent can post, run ads, and manage DMs in plain language.
- Which channels does Zernio support?
- └15 channels: Instagram, TikTok, X/Twitter, Facebook, LinkedIn, YouTube, WhatsApp, Threads, Pinterest, Reddit, Bluesky, Telegram, Google Business, Snapchat, and Discord. With Ads API support for 7 of them.
Still have questions?
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