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PostZen

The Publer Alternative for API-First Publishing

Publer is a scheduling dashboard whose API automates your own Publer workspace. PostZen is a publishing API for your product, with hosted OAuth so your users connect their own accounts.

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// Simple API key authentication
fetch('https://api.postzen.dev/v1/posts', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer POSTZEN_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    platforms: ['instagram', 'twitter', 'linkedin'],
    content: 'Hello world!'
  })
})

Why Switch?

Why PostZen vs Publer?

PostZen API

PostZen

  • API on every plan, including Free

    Free includes 2 accounts, 20 posts a month, and the full REST API. Publer requires the Business plan before a single API call.

  • Hosted OAuth for your users

    Send users to /v1/connect/{platform} and they link their own accounts. Publer only lists accounts that were connected in its dashboard.

  • Cheaper at every account count

    10 accounts cost $34 on PostZen and $66 on Publer Business. 100 cost $149 versus $633.

  • Published rate limits and SLA

    60 to 2,000 requests per minute by plan and a 99.97% uptime SLA. Publer allows 100 requests per 2 minutes per user on every plan.

  • No daily post caps of our own

    Paid plans include unlimited posts. Publer caps each profile per day, for example 25 Instagram posts and 14 LinkedIn profile posts on Business.

  • MCP server on every plan

    Connect Claude, Cursor, or any MCP client with OAuth consent. Publer’s MCP is in beta for Enterprise clients and top ambassadors.

Publer

Publer logo

  • API requires the Business plan

    $10 per month for the first account and $7 for each extra one. Free and Professional users cannot generate an API key.

  • No account-connect endpoint

    The accounts API is read-only. Your users would need their own Publer login to link a profile, which rules out white-label products.

  • 100 requests per 2 minutes

    One limit for every plan, per user. Bulk work has to be spread across time or across extra member seats at $3 each.

  • Daily posting caps per profile

    Business allows 36 Facebook, 25 Instagram, 25 TikTok, 15 YouTube, and 14 LinkedIn profile posts per profile per day. Only Enterprise lifts them.

  • Job polling for every post

    Creating a post returns a job_id that you poll at /api/v1/job_status until it completes. There is no synchronous response.

  • X needs a paid plan

    Publer Free does not allow X accounts at all. X is only available on Professional and above.

Feature Comparison

Side By Side

Feature comparison between PostZen and Publer
PostZenPubler
Primary fitEmbed publishing in your app or agent workflowAutomate your own Publer workspace
API accessEvery plan, including FreeBusiness and Enterprise only
Free tier2 connected accounts, 20 posts/month, API included3 accounts (no X), 10 pending posts per account, no API
Pricing unitFlat plan with included accounts, $3 per extra$10 first account, $7 each after, every tenth free
Account connectionHosted OAuth at /v1/connect/{platform}Publer dashboard only; API lists accounts
Rate limits60 to 2,000/min by plan (published)100 requests per 2 minutes per user
Daily post capsNone beyond the networks’ own limitsPer profile per day; Enterprise lifts them
Create post responsePost object returned directlyjob_id, then poll /api/v1/job_status
Platforms1013, adding Mastodon, Google Business, WordPress
MCP serverEvery plan, OAuth consentBeta, Enterprise and top ambassadors
Uptime SLA99.97% (published)Not published
Scheduling UICalendar, queues, bulk CSVCalendar, queues, bulk CSV up to 500, recycling, RSS
AI assistant and link in bioNoYes

Cost At Scale

Pricing

Pricing comparison between PostZen and Publer
PostZenPublerWinner
2 accountsFree (20 posts/month)$17/mo (Business)PostZen
5 accounts$19/mo (Starter)$38/moPostZen
10 accounts$34/mo (Starter + 5 extras)$66/mo (tenth account free)PostZen
20 accounts$49/mo (Pro)$129/moPostZen
50 accounts$139/mo (Pro + 30 extras)$318/moPostZen
100 accounts$149/mo (Scale)$633/moPostZen
200 accounts$449/mo (Scale + 100 extras)$1,263/mo, or a custom Enterprise quotePostZen

At a glance

Which one is right for you?

PostZen

Pick PostZen When

  • Let your own users connect accounts through hosted OAuth
  • Need the API on a free or $19 plan
  • Publish at volume without per-profile daily caps
  • Need published rate limits and an uptime SLA
  • Want an MCP server for AI agents on any plan
  • Run 2 to 200 or more accounts on a flat monthly fee
  • Prefer a synchronous create-post response
Publer logo

Pick Publer When

  • Want a full scheduling dashboard for a marketing team
  • Need an AI writing assistant, link in bio, or content recycling
  • Publish to Mastodon, Google Business Profile, or WordPress
  • Want analytics, competitor analysis, and best-time-to-post reports in one app
  • Are already on Publer Business and only need to automate your own workspace
  • Need a mobile app and browser extension for posting

FAQ

Common questions

Still have questions?

Does Publer have an API?

Yes. Publer launched a REST API in 2025 at app.publer.com/api/v1. It is available only to Business and Enterprise customers in good standing, authenticates with a Bearer-API key, and allows 100 requests per 2 minutes per user.

How much does Publer cost with API access?

Business is $10 per month for the first social account and $7 per month for each additional one, with every tenth account free. Ten accounts cost $66 a month and 100 cost $633. Yearly billing takes two months off. Professional ($5 plus $4 per extra account) does not include the API.

Can my users connect their own accounts through the Publer API?

No. The Publer accounts endpoint only lists accounts already connected in the Publer dashboard, so anyone who wants to link a profile needs a Publer login. PostZen’s hosted connect flow at /v1/connect/{platform} lets your users authorize their own accounts inside your product.

Is PostZen cheaper than Publer?

For API access, yes at every account count we checked. PostZen Free covers 2 accounts, where Publer Business costs $17. At 10 accounts it is $34 versus $66, at 20 it is $49 versus $129, and at 100 it is $149 versus $633.

What does Publer offer that PostZen does not?

A full marketing dashboard: an AI writing assistant, link in bio, content recycling, RSS automation, competitor analysis, a browser extension, a mobile app, and three extra networks (Mastodon, Google Business Profile, and WordPress).

Does Publer limit how many posts I can publish per day?

Yes. Each profile has a daily cap that depends on plan and network. On Business it is 36 Facebook posts, 25 Instagram posts, 25 TikTok videos, 100 X posts, 15 YouTube videos, and 14 LinkedIn profile posts per profile per day. Only Enterprise removes the caps. PostZen paid plans include unlimited posts, subject to the networks’ own limits.

Can I migrate from Publer to PostZen?

Yes. Reconnect each account through the PostZen hosted OAuth page, upload media through /v1/media/presign, and create posts with a platforms array. PostZen returns the post directly instead of a job_id, so you can drop the polling loop. Bulk CSV import covers a backlog of scheduled posts.

Ready to switch?

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