One API to Post Everywhere.
Integrate social media posting, scheduling, and analytics into your app with a few lines of code. Works with JavaScript, Python, or any AI coding tool.
Starts at $9/mo · 1,000 posts included · 5-minute setup
A Few Lines. Every Platform.
// Post to multiple platforms with one API call
const response = await fetch("https://api.onecast.dev/v1/posts", {
method: "POST",
headers: {
"Authorization": "Bearer YOUR_API_KEY",
"Content-Type": "application/json"
},
body: JSON.stringify({
content: "New blog post is live! Check it out 👇",
platforms: ["twitter", "linkedin", "threads"],
media: ["https://yoursite.com/blog-cover.png"],
schedule_at: "2026-03-28T14:00:00Z"
})
});
const data = await response.json();
console.log(data.post_ids);
// { twitter: "...", linkedin: "...", threads: "..." }Full API docs, webhooks reference, and interactive playground available in our documentation.
Everything You Need to Ship
Multi-Platform Posting
Post to Twitter/X, Instagram, TikTok, LinkedIn, Facebook, YouTube, Threads, Pinterest, and Bluesky from one endpoint.
Smart Scheduling
Timezone-aware scheduling with optimal posting time suggestions. Queue posts days or weeks in advance.
Media Optimization
Upload once. We resize, reformat, and optimize for each platform automatically. Images and videos.
Unified Analytics
Likes, shares, reach, clicks, impressions — all normalized into one consistent format across platforms.
Webhooks & Events
Get real-time notifications when posts publish, fail, or receive engagement. No polling needed.
Rate Limit Management
We handle all platform rate limits, retries, and queuing internally. You never hit a 429 again.
You're Overpaying for Social Media Tools
| Tool | Price | What You Get |
|---|---|---|
| Buffer | $60/mo | 1 user, basic scheduling, limited platforms |
| Hootsuite | $99/mo | 1 user, 10 accounts, basic analytics |
| Sprout Social | $249/mo | 1 user, 5 profiles, limited reporting |
| OneCast | From $9/mo | 1,000+ posts, ALL platforms, full API access, build YOUR own tool |
Stop renting someone else's dashboard. Own your social media infrastructure.
Ship in Minutes, Not Months
Get Your API Key
Sign up, grab your key, and start posting in under 5 minutes. No OAuth headache, no app review process.
Write Your Code (or Let AI Write It)
Use our REST API with any language. Or paste our docs into Cursor, Claude, or Bolt and let AI build your custom scheduler for you.
Post to Every Platform
One endpoint, all platforms. We handle rate limits, media optimization, format differences, and retries.
All Your Platforms, One API
Connect and publish to all major social networks through a single, unified endpoint.
Usage-Based Pricing That Scales With You
Starts at $9/mo. Pay more only when you grow.
1,000 posts included · $10 per additional 1,000
- 1,000 posts/month
- All platforms (10+)
- Full API access
- Scheduling & analytics
- REST API — works with any language
- Webhooks & real-time events
- Media optimization included
- Priority support
$0.00 due today. No card required.
That's up to 10x cheaper than Hootsuite or Sprout Social — with full API access and unlimited customization.
Got Questions?
Everything you need to know about OneCast. Can't find what you're looking for? Reach out to us.
Start Shipping Social Features Today
One API. Nine platforms. Five-minute setup. Join hundreds of developers who've stopped wrestling with social media APIs.
1,000 posts included · No long-term contracts · Cancel anytime