Social Media Posting API for Developers
Zernio's social media posting API lets you publish, schedule, and manage content across 16 platforms. Replace months of integration work with a single endpoint.
- 16 platforms
- Unlimited Social Accounts
- One API
Post the launch image to Instagram, X, LinkedIn and Threads
Simon Fairhurst@siimonfairhurstLaunch day 🚀 Everything we shipped this quarter, in one place.
Simon Fairhurst@siimonfairhurstLaunch day 🚀 Everything we shipped this quarter, in one place.
Join 70,000+ of the world's most ambitious developers and builders
One API. Every platform
Post to all 16 major platforms from one API
From signup to first post in three steps
1Create New API Key
Key Name
e.g., Production API Key
Permission
Read & Write
Read Only
Profile Access
Full access (all profiles)
Create key
Get Your API Key
Sign up free, generate a key from the dashboard. First 2 social accounts free, unlimited posts.
2New Connection
Profile
SOCIAL
TikTok
X
Threads
YouTube
Bluesky
Snapchat
Discord
Telegram
Slack
Google Business
Connect Social Accounts
Link accounts via OAuth. Each gets a unique ID for API calls.
3Create Post
Content
What's on your mind…
Add media
Platforms
@yourbrand
@Your Company
Publishing
Schedule
Now
Queue
Draft
Start Posting
One API call to publish across all 16 platforms. Ship your first post in under 5 minutes.
Everything you need to publish.
Year in review, by the numbers
Restock: the navy is back
Winter drop is live 🚀
Behind the build: how we ship on Fridays
New guide: scheduling at scale
The studio in 60 seconds
Community AMA this Thursday
Post Scheduling & Queues
Schedule with timezone support. Set up recurring queues or bulk-upload via CSV.
Images, Videos & Carousels
Upload images, videos, carousels, Stories, and Reels. Auto-validation and resizing included.
Webhooks & Events
Real-time notifications for post status changes and new analytics data.
First Comment Support
Auto-add first comments on Instagram, Facebook, LinkedIn, and YouTube.
n8n, Make & Zapier Ready
Official n8n node plus webhook support for Make and Zapier workflows.
Your agent posts, schedules, and manages content
496 tools on one OAuth connection. Nothing to install, nothing to self-host.
› claude
Claude Code v2.1.19
Opus 4.5 · Claude Max
~/software
›
✓ registered · https://mcp.zernio.com/mcp
✓ signed in over OAuth · no key pasted
✓ call_tool · queued Thu 09:00 · LinkedIn, X
✓ nothing published yet · review it first
Frequently Asked Questions
Ship your first post today
Generate a key, connect an account, and publish in under 5 minutes.
- 16 platforms
- Unlimited Social Accounts
- One API
Everything social, not just posting
Comments, DMs, analytics, and ads run on the same API and the same connected accounts.
Campaigns, boosts, and ad analytics in one API across 7 networks
Meta Ads
Pricing launch
Summer Sale
$40/day
Google Ads
Pricing launch
Meta Ads
Pricing launch
Summer Sale
$40/day
Google Ads
Pricing launch
Retargeting
$30/day
Holiday Boost
$52/day
Launch Push
$18/day
One inbox for every DM
lauravisuals
· via @yourbrand
Can you send me the guide?
Nate Ellis
· via @nate_builds
Sent you a DM about the API
Priya Raman
· via Zernio
Following up on the demo
kiero_d
· via @yourbrand
Is this available in the EU?
Every metric, one endpoint
Moderate comments across platforms
marcus.dev
Does this cover Threads as well?
lauravisuals
Shipped our whole calendar with this 🙌
nate_builds
Any way to schedule a carousel?
Turn comments into DMs
@lucia_dev Guide 🙌
@andrewww_ Guide
@kiero_d Guide
lucia_dev
Here's the guide 👇 · now
andrewww_
Here's the guide 👇 · 1m