Build with the Crosspostify API
Upload media once and publish it to nine platforms with one REST call. Schedule posts, track their status and automate everything from your own tools or n8n.
API access is included in the Pro and Business plans.
Publishes to
Your first post in three requests
Every request carries your API key in the X-API-Key header. Base URL: https://v1.api.crosspostify.com
- 1
List your accounts
Returns the id and platform of every connected social account.
curl https://v1.api.crosspostify.com/social-accounts \ -H "X-API-Key: your_api_key_here" - 2
Upload your media
Images up to 20 MB, videos up to 100 MB. The response contains the media id.
curl -X POST https://v1.api.crosspostify.com/media \ -H "X-API-Key: your_api_key_here" \ -F "type=VIDEO" \ -F "[email protected]" - 3
Publish or schedule
Add scheduledDate to publish later. Check the result with GET /posts.
curl -X POST https://v1.api.crosspostify.com/post/video \ -H "X-API-Key: your_api_key_here" \ -H "Content-Type: application/json" \ -d '{ "mediaId": "MEDIA_ID", "posts": [{ "accountId": "ACCOUNT_ID", "caption": "Hello world" }] }'
Everything you need to automate publishing
The same engine that powers the Crosspostify app, ready for your own code.
One request, many platforms
Send one post object per account, each with its own caption and settings, to up to nine platforms.
Scheduling built in
Pass a scheduledDate and Crosspostify publishes at that time. No cron jobs on your side.
Media handled for you
Upload once. Images are resized and re-encoded where a platform needs it.
Platform options
TikTok privacy and interactions, Instagram Stories and trial reels, YouTube privacy, Facebook first comments and more.
Safe retries
Send an X-Request-ID header and a repeated request returns the first answer instead of posting twice.
Status tracking
GET /posts shows every post with its status, error message and link once it is live.
What teams build with it
Content management systems
Integrate social posting directly into your CMS workflow.
Auto-post blog articles to social media when they are published.
E-commerce platforms
Promote products across social channels automatically.
Share new product launches to Instagram and Facebook.
Marketing automation
Plan and run campaigns across all your channels.
Schedule a week of promotional posts in one request.
Everything in one place
Ready to build?
Get your API key in the app and make your first request in minutes. API access is included in the Pro and Business plans.