Trusted by 2,000+ developers

The Social Media API for Developers and AI Agents

Ship social features in minutes instead of months. One API to publish and schedule posts across 9 channels.

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TypeScript
const post = await fetch("https://api.postzen.dev/v1/posts", {
  method: "POST",
  headers: { "Authorization": `Bearer ${POSTZEN_API_KEY}` },
  body: JSON.stringify({
    text: "New feature drop",
    channels: ["instagram", "linkedin", "tiktok"],
    mediaUrls: ["https://example.com/demo.mp4"],
    scheduledFor: "2026-06-15T09:00:00Z"
  })
});

Publish everywhere from one endpoint

2.3M+

Posts delivered

99.97%

API uptime

2,000+

Active developers

< 50ms

Average response

Build vs Buy

Skip the integration treadmill

Every platform has its own developer app, review process, token lifecycle, and media rules. PostZen replaces all of it with one integration.

Building it yourself

The integration work never really ends.

  • 7 developer apps, 7 OAuth flows, 7 app review processes
  • Token refresh, rate limits, and retry logic per platform
  • Media specs and API rules that change without warning
  • Months of integration work before your first post

With PostZen

One integration. Every supported platform.

  • One API key and one OAuth flow for every platform
  • Tokens, rate limits, and retries handled for you
  • Media validated and transformed per platform automatically
  • First post in production in under an hour

What You Can Do

Everything you need to ship social features

Connect accounts, publish, upload media, and react to events — four predictable endpoints cover the whole publishing lifecycle.

GET/connect/{platform}

One OAuth flow for every platform. No dev apps needed.

POST/posts

One call, 9 platforms. Text, image, video, or carousel.

POST/media

Forget complicated storage, upload media directly.

See all endpoints →

How it Works

Live in three steps

Go from signup to your first post across multiple social media platforms in under 5 minutes.

  1. Step 1

    Get your API key

    Sign up and grab your key. Takes 30 seconds — no sales call, no demo gate.

  2. Step 2

    Connect accounts

    Link social accounts through one OAuth flow. No platform developer apps needed.

  3. Step 3

    Launch

    Send one POST request and you just added social media to your stack.

FAQ

Frequently asked questions

The practical details teams want to know before replacing a stack of social integrations with one API.

Still have questions?

How fast can I integrate PostZen compared to building custom integrations?

Custom integrations take months. PostZen social media API takes under an hour.

Do I need to create developer apps for each platform?

No. We handle developer apps, approvals, and platform-specific limits for you.

How reliable is the scheduling?

We transform content for each platform's requirements. Posts go out on time without custom retry logic.

Is PostZen white-label friendly?

Yes. Your users never need to see PostZen branding.

Will posting through PostZen get my accounts banned or reduce reach?

No. We use official platform APIs, so posts are treated like native posts.

Can AI agents use PostZen to post on social media?

Yes. PostZen uses a documented API and a hosted MCP server so agents can post, schedule, and manage social accounts through natural language.

Which social media platforms does PostZen support?

Instagram, X, LinkedIn, Facebook, Threads, YouTube, TikTok, Pinterest, and Bluesky.

Stop maintaining integrations.
Start shipping features.

Start for Free

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