The social media and messaging API for developers and AI agents.
What's new·getlate.dev is now zernio.com
The social media and messaging API for developers and AI agents.
Ship in minutes instead of months. One API to publish, message, promote, and analyze across 15 channels.
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zernio.ts
TypeScript
import Zernio from "@zernio/node";
const zernio = new Zernio(process.env.ZERNIO_API_KEY);// 1. Connect any of 15 channels via hosted OAuth
const { url } = await zernio.accounts.connect({ platform: "instagram" });
// 2. Publish everywhere in one call
await zernio.posts.create({
text: "Launch day!",
platforms: ["instagram", "linkedin", "tiktok"]
});
// 3. Give your product its own phone number
await zernio.whatsapp.phoneNumbers.purchase({ countryCode: "US" });
Platforms
Social
Twitter/XInstagramTikTokLinkedInFacebookYouTubeThreadsRedditPinterestBlueskySnapchatGoogle Business
Messaging
Ad networks
Meta AdsGoogle AdsLinkedIn AdsTikTok AdsPinterest AdsX Ads
Trusted by builders at
Case study
0 posts this week
0 accounts connected this week
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.
Elena Zarino
Web Developer
We're integrating Zernio into our coaching app's WhatsApp inbox and love how clean the SDK is. Thank you for that.
Leon
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.
Justin
Founder, StandoutResults
It works flawlessly now. Superb, as always. You and the team rock, keep up the amazing work.
Marko
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.
Razvan Ghetiu
Founder, purplepalm.ai
I love the speed and quality here, the API is awesome. I've never seen anyone ship integrations this fast.
Dev Singh
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.
Jim
Developer
I'm building captureflow.ai on Zernio and I love the platform. Super happy to be using you guys.
Chris
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.
Zahareus
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.
Elena Zarino
Web Developer
It works flawlessly now. Superb, as always. You and the team rock, keep up the amazing work.
Marko
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.
Jim
Developer
We're integrating Zernio into our coaching app's WhatsApp inbox and love how clean the SDK is. Thank you for that.
Leon
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.
Razvan Ghetiu
Founder, purplepalm.ai
I'm building captureflow.ai on Zernio and I love the platform. Super happy to be using you guys.
Chris
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.
Justin
Founder, StandoutResults
I love the speed and quality here, the API is awesome. I've never seen anyone ship integrations this fast.
Dev Singh
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.
Zahareus
Developer
How It Works
Go from signup to your first post, message, or ad in under 5 minutes.
1. 1. Get your API key. Sign up and grab your key. Takes 30 seconds. 2. 2. Connect channels. Link social accounts, WhatsApp numbers, and ad accounts via OAuth. No developer apps needed. 3. 3. Launch. You just added messaging, social, and ads to your stack.
What You Can Do
GET/connect/{platform}One OAuth flow for every platform. No dev apps needed.POST/postsOne call, 15 platforms. Text, image, video, or carousel.GET/analyticsLikes, reach, impressions, clicks, views. Unified.POST/ads/boostBoost any post to a paid ad on 6 ad networks.POST/webhooks/settingsPosts published or failed? Get pinged. No polling.GET/inbox/conversationsDMs, comments, reviews. One inbox. Reply via API.
WhatsApp Numbers
Give your product a WhatsApp number.
In 54 countries. We handle the regulatory paperwork.
+1 (415) 555-0142
online
Is my order shipped?
Out for delivery, ETA 14:20.
Try it live
Scan or tap, and the API replies to your WhatsApp in seconds.
One API call. KYC done for you. Calls and inbox included.
POST/whatsapp/phone-numbers/purchase
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? Ask our team →
Stop maintaining 21 integrations.
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