Zernio — Marketing infrastructure for agents, behind one API key | LaunchDaily
Zernio
Marketing infrastructure for agents, behind one API key
social media api
marketing infrastructure
ads api
messaging api
whatsapp
sms
Zernio is a marketing infrastructure API aimed at developers and AI agents. A single API key covers social posting and engagement, ad management, blogs, and messaging channels (WhatsApp, SMS, iMessage, RCS, calls) — with an MCP server so coding agents like Claude Code, Cursor, and Codex can drive the same endpoints. The vendor handles platform approvals, token rotations, and rate limits across 17 platforms.
Key Features
Unified social media API
Post, schedule, reply to comments and DMs, and pull analytics across sixteen social networks — including Instagram, TikTok, X, LinkedIn, Facebook, Threads, YouTube, Pinterest, Bluesky, Reddit, Snapchat, Discord, Telegram, Slack, and Google Business — from one integration.
Advertising API across seven networks
Create campaigns, ad sets, and creatives; adjust budgets, pause and resume mid-flight; and read spend and performance in one consistent response shape across Meta, Google, LinkedIn, TikTok, Pinterest, X, and OpenAI Ads.
Messaging and voice infrastructure
One API for WhatsApp, SMS/MMS, iMessage, RCS, and calls, with carrier registration handled and a unified inbox for replies. Includes voice calling so AI agents can place and take calls.
Phone numbers in 55 countries
Search, buy, and verify phone numbers via the API; calls, SMS, and WhatsApp can all run on a single number. Per-country pricing is shown upfront (e.g., US from $3/mo, Brazil $5/mo).
Blogs API
Create, edit, publish, and delete articles on WordPress and Shopify; each connected site or store counts as one account.
SDKs, MCP server, and CLI
Eight SDKs across 17 platforms plus a raw REST API, an MCP server for handing the API to agents (works with Claude Code, Cursor, Codex, OpenClaw, Grok bot, Hermes), and a CLI for shell usage.
Webhooks instead of polling
Real-time events for post status, messages, and comments, so replies come back on the same webhook across networks.
Enterprise controls
SAML SSO, SCIM, MFA, audit logs, RBAC, SOC 2 + GDPR paperwork via a trust portal, and a dedicated Slack channel with engineering on the Enterprise tier.
How It Works
1
Connect accounts
Sign up and connect your social, messaging, ads, or blog accounts; the first 2 accounts are free with no credit card.
2
Integrate once
Use an SDK (Node, Python, Go, and others), the MCP server, or the CLI to call one API for every channel. The homepage claims signup to first post, message, report, or ad in under 5 minutes.
3
Let agents operate it
Give an AI agent access over MCP to post, schedule, run ad campaigns, moderate comments, and send messages — with platform reviews, token rotations, and rate limits absorbed by Zernio.
Pros & Cons
Pros
One integration replaces separate SDKs and approvals for social, ads, messaging, and blogs — the vendor absorbs platform changes, token rotations, and rate limits
MCP server plus 8 SDKs and a CLI, making it directly usable from AI coding agents
Generous free start: 2 accounts free with every feature included, nothing gated behind a plan, no credit card
Official APIs only, with platform reviews already done
Transparent, itemized usage billing with per-country phone number and WhatsApp cost tables
Enterprise-grade controls available (SSO, SCIM, RBAC, audit logs, SOC 2) with self-service at any scale below Enterprise
Who It's For
Best for
Developers and SaaS builders who want to add social posting, messaging, or ads to their product without integrating each platform separately
Teams building AI agents that need to post, reply, run ads, or message customers — especially via Claude Code, Cursor, or Codex with the MCP
Agencies and platforms managing many client accounts (pricing scales down per account at volume)
Startups that want voice, WhatsApp, SMS, and iMessage channels behind one number and one inbox
Not ideal for
Marketers who want a standalone social media dashboard UI — this is developer infrastructure (API, SDKs, MCP, CLI), not a point-and-click to
Use Cases
Scheduling and publishing posts, reels, stories, and threads across many social networks from a single API call
Building WhatsApp inboxes, SMS flows, iMessage, or AI voice-agent calling into a product (e.g., a coaching app's WhatsApp inbox)
Launching and moderating ad campaigns programmatically across seven ad networks and reading spend in one shape
Publishing and managing WordPress and Shopify blog articles from code
Embedding social, messaging, and ads capabilities into SaaS products or agent workflows without handling individual platform approvals
Pricing
No traditional plans: every feature is included on every account, and you pay per connected account plus usage. The first 2 accounts are free with no credit card. Account tiers: 3–10 accounts at $6/mo each, 11–100 at $3/mo each, 101+ at $1/mo each (example shown: 10 accounts = $48/month). Metered usage applies on top: first 10,000 messages/month free then metered, ads metered per active ad, X/Twit
Free (2 accounts)
$0/month
2 accounts free to start, no credit card. Every feature included, nothing gated behind a plan. Usage-based billing, cancel anytime.
Build
Usage-based; $6/mo per account (3–10), $3/mo (11–100), $1/mo
Card on file. Example shown: 10 paid accounts = $48/month (avg $4.80 per account). Self-service at any scale, no sales call; access to all platforms across social, blogs, messaging, and ads. Messages, ads, and phone numbers metered separate
Enterprise
Custom
The same platform with custom terms, available past 2,000 accounts. Includes SAML SSO, SCIM, MFA, audit logs, RBAC, SOC 2 + GDPR paperwork via the trust portal, a dedicated Slack channel with engineering, and everything in Build plus custom
Integrations
Instagram
TikTok
X/Twitter
LinkedIn
Facebook
Threads
YouTube
Pinterest
Bluesky
Reddit
Snapchat
Discord
Telegram
Slack
Google Business
Meta Ads
FAQ
What does Zernio do?
It's a marketing infrastructure API that lets your product or AI agent post, message, advertise, and call customers across social networks, blogs, ad platforms, and messaging channels — all behind one API key, using official APIs only.
How is Zernio priced?
Pay for what you use: the first 2 connected accounts are free with every feature included, then accounts cost $6/mo each (3–10), $3/mo (11–100), or $1/mo (101+). Messages are metered after the first 10,000 sent per month, ads are metered per active ad, and phone numbers are billed per country. Enterprise pricing past 2,000 accounts is custom.
Can AI agents use it?
Yes. Zernio ships an MCP server so agents like Claude Code, Cursor, Codex, OpenClaw, Grok bot, and Hermes can drive the same API, alongside 8 SDKs, a CLI, and a raw REST API.
Usage-based costs can stack: messages are metered after the first 10,000 sent per month, ads are metered per active ad, and each phone number has a recurring monthly fee
Volume discounts only kick in at 3+ paid accounts; the 3–10 account tier is $6/mo per account
X/Twitter API costs are passed through at X's exact rates with zero markup — meaning X usage can be as expensive as X's own pricing
Enterprise tier (needed past 2,000 accounts, with SSO/SCIM/SOC 2) requires talking to sales rather than self-service
Some phone number types require documents and pre-orders in certain countries (e.g., Indonesia), so availability varies by region
Teams that only need one or two accounts and prefer flat monthly plans over usage-based billing with a card on file
Anyone who needs every cost fixed upfront — messages beyond 10k/month, active ads, and phone numbers are all metered or recurring add-ons
Sixteen social networks (Instagram, TikTok, X, LinkedIn, Facebook, Threads, YouTube, Pinterest, Bluesky, Reddit, Snapchat, Discord, Telegram, Slack, Google Business, and more), seven ad networks (Meta, Google, LinkedIn, TikTok, Pinterest, X, OpenAI), messaging via WhatsApp, SMS/MMS, iMessage, RCS, and calls, plus WordPress and Shopify blogs.
How fast can I get started?
The homepage claims signup to your first post, message, report, or ad in under 5 minutes, with 2 accounts free and no credit card required.
Do I still need to go through platform approvals myself?
No — Zernio states it has done the platform reviews, and that platform changes, token rotations, and rate limits are absorbed on its side.
Is there an enterprise option?
Yes. Past 2,000 accounts, Enterprise offers custom pricing and terms, SAML SSO, SCIM, MFA, audit logs, RBAC, SOC 2 + GDPR paperwork via a trust portal, and a dedicated Slack channel with engineering.
How are X/Twitter API costs handled?
X's API is passed through at X's exact rates with zero markup from Zernio.
