Do I need my own developer apps for Twitter or Meta?

No. Zernio handles all developer apps, approvals, and quota limits. You only need to connect your social accounts via OAuth through the Zernio dashboard.

Which platforms are supported?

Zernio supports over 15 platforms, including Instagram, Facebook, X (Twitter), LinkedIn, TikTok, Pinterest, YouTube, WhatsApp, Threads, Bluesky, and Reddit.

Does it support AI agents?

Yes, Zernio is built for AI agents. It provides a Chat SDK adapter for Vercel and an MCP server, allowing agents to read and write social content natively.

How does X/Twitter pricing work?

Because X charges per API call, Zernio passes through those specific costs with zero markup. You only pay for what you use on X/Twitter specifically.

Can I manage DMs and comments via the API?

Yes, the Zernio Unified Inbox API allows you to fetch, read, and reply to messages and comments across all platforms from a single interface.

Is there a setup fee or long-term contract?

No. Zernio is usage-based and billed monthly. You can connect or disconnect accounts at any time and only pay for what you use.

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Social Media

Freemium

Zernio

Unified social media API for developers and AI agents. Post, schedule, and manage DMs across 15+ platforms via a single integration without needing individual developer apps.

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Rating

Reviews

Upvotes

3 months ago

Listed

Social Media API

Social Media Scheduler

AI Agent Tools

Developer Tools

Marketing Automation

Unified API

Content Distribution

Customer Support

SaaS Infrastructure

Tool information

Provider

Zernio

Platforms

Web

Node.js

Python

Rust

PHP

Java

Languages

English

API Available

Yes

Added to directory

3 months ago

Last updated

about 1 month ago

Rating

Not available

Pricing

Freemium

About Zernio

What the tool does and who it's for

Zernio (formerly Late) is an API-first social media infrastructure designed for developers and AI agents. It provides a unified platform to post, schedule, and engage across 15+ social networks—including Instagram, X (Twitter), LinkedIn, and WhatsApp—without requiring developers to maintain their own platform-specific apps. The service handles OAuth flows, app reviews, and rate limits, offering a single integration point for publishing content, managing DMs/comments, and fetching analytics. It is specifically optimized for AI workflows with official adapters for the Vercel Chat SDK and Model Context Protocol (MCP) servers.

Key capabilities

Unified API: One single endpoint to post text, images, videos, and carousels across 15+ platforms.

No Dev Apps Needed: Zernio manages all platform-specific developer app approvals and quota limits.

AI Agent Optimized: Official Vercel Chat SDK adapter and MCP server for seamless AI agent integration.

Unified Inbox: Read and respond to DMs and comments from all connected platforms via one API.

Real-time Webhooks: Get instant notifications for post status updates, new messages, or comments.

Cross-Platform Analytics: Access unified metrics for impressions, reach, and engagement across all accounts.

Automated Scheduling: Programmatic scheduling and queue management for multi-platform posting.

White-Label Ready: Use Zernio as a backend without interfering with your own brand's identity.

Pricing

Freemium — plans below

Free

Up to 2 connected accounts
Full API access
Scheduling & Publishing
Analytics & Inbox access
Unlimited posts

Starter

Scale

$3/account

11 to 100 accounts
Everything in Starter
Volume discount pricing
Priority support

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