Social Media Posting API for Developers

Add social posting to your app without building 10 separate integrations. Send one request to post now or schedule for later. Mallary handles auth, queues, retries, and platform rules.

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Outcome

Build less. Publish more.

Give your users a strong social posting tool without making your team own every platform API.

Build one integration

Send one request to Mallary instead of building and fixing a different posting flow for every social network.

Ship social posting faster

Use one clear payload for text, media, schedules, and platform options. Your team can focus on your product.

See every result

Get one job for each platform. Check its status, warnings, platform post ID, and public post URL.

Managing several brands or client profiles? See Mallary for agencies.
One clean request

10 Platforms. One Call.

Pick the platforms, write the message, and add media. Use scheduled_at when the post should go out later.

  • Use one main message or change the text for each platform.
  • Add platform options for Reels, Shorts, stories, carousels, and more.
  • Get job IDs right away while Mallary posts in the background.
Create a scheduled postPOST 
fetch('https://mallary.ai/api/v1/post', {
  method: 'POST',
  headers: {
    'Authorization': 'Bearer YOUR_API_KEY',
    'Content-Type': 'application/json'
  },
  body: JSON.stringify({
    platforms: ['facebook', 'instagram', 'linkedin'],
    message: 'Meet the product we built for small teams.',
    media: [{
      url: 'https://files.mallary.ai/launch.mp4'
    }],
    scheduled_at: '2026-08-01T14:00:00Z'
  })
})
Auth managed Async jobs Safe retries
Ten social networks

Reach every audience from one API

Connect accounts once in Mallary. Your app can then publish to any supported platform.

Facebook Instagram LinkedIn YouTube TikTok Pinterest Reddit Threads Bluesky X
A simple posting flow

From file to live post in three steps

The API stays small, even when the platform work is hard. Mallary does the slow work after your request returns.

  1. 1

    Upload your media

    Ask Mallary for an upload URL, send the file, and get a public Mallary media URL. Skip this step for text-only posts.

  2. 2

    Create the post

    Send your message, platforms, media, and optional publish time to POST /api/v1/post.

  3. 3

    Track each platform job

    Poll a job, list grouped posts, or use webhooks. You can see what published and what needs attention.

Made for real apps

Post now or schedule

Publish at once or set a future time and time zone on paid plans.

Change text by platform

Start with one message, then add a custom caption or title for any platform that needs one.

Send images and video

Upload media once. Mallary checks each platform rule before it adds the post to the queue.

Use safe retries and queues

Long uploads run in the background. Mallary retries safe failures without making your app wait.

Work with many profiles

Use profile_id when a user has more than one set of connected social accounts.

React with webhooks

Start your next step when a post is published, scheduled, partly published, or failed.

No Code? No Problem.

You don't even need to know what an API is. Just use your preferred tool, connect Mallary, and tell it what you want to post.

Conversational workflow

Let Claude handle your social media posts

with a little help from the official Mallary Claude connector.

Prompt / Schedule / Confirm
Claude scheduling social media posts with Mallary
Real Mallary connector workflowOpen Claude setup
Don't like Claude? We also have a ChatGPT plugin.
Social media posting API FAQ

Questions developers ask

Short answers about posting, media, schedules, and job status.

What is a social media posting API?

A social media posting API lets your app publish content with code. Your app sends the text, media, and target platforms. The API sends the post to each connected social account.

Which social platforms can Mallary post to?

Mallary can post to Facebook, Instagram, LinkedIn, YouTube, TikTok, Pinterest, Reddit, Threads, Bluesky, and X. Each platform has its own media and post rules.

Can I schedule posts with the API?

Yes. Paid plans can send scheduled_at with an exact time. You can also send scheduled_timezone when you want Mallary to use a local time zone.

Can each platform use different text?

Yes. Send one main message for every platform, then use platform_options to set a different message, title, post type, or other supported option for one platform.

How do I know when a post is live?

The create request returns one job ID for each platform. Check GET /api/v1/jobs/{id}, list your grouped posts, or use a webhook. Finished jobs include the platform post ID and public URL when the platform provides them.

Does my app need to handle social network tokens?

No. Users connect their accounts in Mallary. Mallary handles the saved connection, token refresh, API changes, queues, and platform calls.

Start publishing

Ship social posting without the API busywork

Connect your accounts, copy your API key, and send your first multi-platform post in minutes.

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One API / Ten destinations / Clear status