Zernio
Unified social media & messaging API for developers and AI agents. Publish, message, promote, and analyze across 15 channels via single API. Official partner with Meta, TikTok, LinkedIn, Pinterest, X. Includes WhatsApp dedicated numbers and MCP server for AI agents.
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What is Zernio?
Zernio is a unified social media and messaging API for developers and AI agents. It lets you connect social, messaging, and ad accounts once, then publish, schedule, message, analyze, and automate across many platforms from a single integration.
The product is designed to replace a large stack of separate platform integrations. It handles OAuth, media processing, rate limits, retries, platform quirks, and developer app setup so teams can focus on building their own product.
Core capabilities include posting and scheduling content, managing inboxes, reading and replying to comments and DMs, tracking analytics, running ad boosts, and receiving webhooks for real-time events. The site also highlights a WhatsApp number offering and an MCP server for AI agents.
Zernio is best suited for software teams, SaaS companies, agencies, and builders who need social publishing or messaging infrastructure at scale. It is especially relevant for products that want to embed social features without maintaining many platform-specific APIs.
Zernio pricing
Pricing model: Freemium
Zernio uses pay-per-connected-account pricing with no plans, tiers, or add-ons. The first 2 connected social accounts are free and require no credit card; each free account includes scheduling, analytics, inbox access, full API access, and unlimited posts. After that, pricing is $6 per account per month for accounts 3-10, $3 per account per month for accounts 11-100, $1 per account per month for accounts 101-2,000, and custom pricing for 2,001+ accounts. X/Twitter API costs are passed through at exact X rates, while other platforms are included; WhatsApp numbers have separate country-based fees, with the U.S. number listed at $2 per month.
Zernio pros
- One API for many platforms
- Supports 15 social channels
- Includes messaging and inbox
- Supports comments and DMs
- Includes analytics across platforms
- Supports ad boosting
- Real-time webhooks
- Hosted OAuth flow
- No developer apps needed
- Unlimited posts included
- Built for AI agents
- MCP server available
- White-label friendly
- Fast setup time
- Usage scales to many accounts
- Handles platform quirks automatically
- Media processing included
- Rate limits managed for you
Zernio cons
- Focused on developers, not casual users
- Requires API integration work
- X/Twitter costs pass through separately
- WhatsApp numbers have extra fees
- Not a standalone social media dashboard
- Platform support may vary by network
- Advanced features depend on connected accounts
- Usage-based pricing can grow with scale
- Some features depend on third-party APIs
- No free unlimited plan
Frequently asked questions about Zernio
What does Zernio do?
Zernio provides a unified API for social media, messaging, analytics, webhooks, and ads. Instead of integrating separately with each network, you connect accounts once and use Zernio to publish posts, manage inboxes, track performance, and automate workflows across supported platforms.
Which platforms does Zernio support?
Zernio supports 15 social and messaging channels, including Instagram, TikTok, X/Twitter, Facebook, LinkedIn, YouTube, Threads, Pinterest, Reddit, Bluesky, Snapchat, Google Business, WhatsApp, Telegram, and Discord. It also supports six ad networks, including Meta Ads, Google Ads, LinkedIn Ads, TikTok Ads, Pinterest Ads, and X Ads.
How does Zernio’s pricing work?
Pricing is based on the number of connected social accounts per month. The first two connected accounts are free, and every feature is included. After that, accounts are billed at graduated per-account rates, with custom pricing for very large account volumes.
What is included with each connected account?
Each connected social account includes scheduling, analytics, inbox access for comments and DMs, full API access, and unlimited posts. The site says there are no separate feature tiers or add-ons.
Are there any extra costs?
Yes. X/Twitter API usage is passed through at exact X rates, so those costs are separate from Zernio’s account pricing. WhatsApp numbers also have additional fees depending on country, and outbound WhatsApp call costs are billed at the carrier or Meta rate.
Do I need to create developer apps for each platform?
No. Zernio says it handles developer apps, approvals, and quota limits for you. You connect accounts through OAuth and avoid building and maintaining separate platform applications.
Can Zernio handle posting and scheduling?
Yes. Zernio supports one-call publishing to multiple platforms, along with scheduling, threads, queues, calendar-based planning, and support for text, images, video, and carousels where supported.
Does Zernio support messaging and inbox management?
Yes. Zernio includes messaging support and a unified inbox for DMs, comments, and reviews. You can read and send messages and reply through the API.
Is Zernio suitable for AI agents?
Yes. The site says Zernio is built for developers and AI agents and provides an MCP server with 280+ tools. It is intended for agents that need to post, manage DMs, run ads, or work with social platforms in plain language.
How fast can I get started?
Zernio says you can go from signup to your first post, message, or ad in under 5 minutes, and that many integrations can be running in under an hour. The flow is described as getting an API key, connecting channels, and launching.