Pick Zernio if
You are a developer building a product or an agent that posts for other people, you need OAuth for your users' accounts, a network outside the 7, or ad campaigns and direct messages through the same API.
Alternatives
Zernio is a developer-first REST API and hosted MCP server for posting, scheduling and analytics, priced per connected account with the first 2 free and no plans or seats. It is a good fit if you are building an app or an agent that posts for many accounts and you want an OpenAPI spec, OAuth for third-party apps and ad campaign management on the same bill. Posteora is a hosted posting agent for one person: your assistant drafts and schedules, Posteora previews the cost, waits for your yes and posts. They overlap on MCP and on an API; they differ on who they are built for and on how the price scales.
Zernio facts last checked 2026-10-19 on zernio.com. Tell us if something moved: support@posteora.com.
| Zernio | Posteora | |
|---|---|---|
| Price, one person with 5 accounts | First 2 connected accounts free, then $6 an account a month for accounts 3 to 10: 5 accounts is $18 a month. Monthly billing only, no annual price. The rate falls to $3 from 11 accounts and $1 from 101 | Pro: $19 a month, or $15 a month billed annually, for all 7 networks with 1 account each |
| Free plan | Yes, no card: the first 2 connected social accounts | Yes, no card: 10 posts a month across all 7 networks, 5 AI credits a day, the assistant included |
| Posts | "Unlimited posts" on every account; no fair use line published. X analytics is opt-in and billed per API request | Pro: unlimited posts, fair use of 600 per network per month. Free: 10 a month |
| Networks | 17 platforms claimed, 15 named for publishing on its home page, plus 8 ad networks | 7: X, LinkedIn, Bluesky, Mastodon, TikTok, Pinterest and YouTube. Mastodon on any instance |
| AI assistant | A hosted MCP server and a Claude Code plugin, built for apps and agents. No preview or approval step is described | MCP on both plans for Claude, ChatGPT and Claude Code, with preview-then-approve and a cost receipt before anything is queued |
| Analytics | Per-post and per-account engagement, reach and follower metrics on every account | Per-post analytics for X, Bluesky, Mastodon, YouTube and Pinterest. Not a reporting suite |
| API | The product itself: a REST API with an OpenAPI 3.1 spec, Bearer API keys, and OAuth 2.1 with PKCE for third-party apps | REST API and webhooks on both plans at /docs/api |
Zernio's free tier is generous for a person with two accounts: two connected accounts and no stated post cap. Past two accounts the meter starts, and at 5 accounts it is within a dollar of Posteora Pro, which covers 7 networks. Zernio has no approval step by design: an app calls the API and the post goes out. Posteora is instructed to preview first and wait for your yes, and it sets daily caps per network so that no account trips a spam filter; the caps are on the pricing page.
You are a developer building a product or an agent that posts for other people, you need OAuth for your users' accounts, a network outside the 7, or ad campaigns and direct messages through the same API.
You are one person who already works in Claude, ChatGPT or Claude Code and wants to say "post this" and approve a receipt, your networks are among the 7, and you want one flat price rather than a meter per account.
More comparisons, each dated: Posteora vs Postiz · Posteora vs Buffer · Posteora vs Metricool.