Every social platform. One API.
Publish, schedule, and analyze across every platform with a single API. Integrate before your morning stand-up. Scale to thousands of accounts.
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const res = await mc.post.create({
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text: "Shipping in public 🚀",
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media: [photo],
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accounts: ["ig_92x", "x_4f7", "li_3km"],
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});
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await mc.post.schedule({
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text: "Launch day is here.",
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accounts: ["yt_0a1", "x_4f7"],
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at: "2026-07-01T09:00",
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timezone: "America/New_York",
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});
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const stats = await mc.analytics.get({
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account: "ig_92x",
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metrics: ["impressions", "engagement"],
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window: "28d",
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});
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const { url } = await mc.connect.create({
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platform: "tiktok",
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user: "usr_8f2c",
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redirect: "https://acme.app/done",
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});
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Supported platforms
Zero to posted in three steps.
Sign up and get your API key. Takes 10 seconds. No forms, no sales calls. Instant access to every platform.
Get your API key
Sign up and get your API key. Takes 10 seconds. No forms, no sales calls. Instant access.
Connect account
Hosted OAuth links any account, yours or your customers'. No developer apps, no approval queues.
Start posting, and more
One call publishes everywhere. We handle formatting, encoding, and delivery.
Everything you need, and more.
We’ve done the heavy lifting, so you can ship fast, without the maintenance multiplier every platform brings.
Publishing
Create, update, and delete posts across every connected account with one request.
Scheduling
Queue content for any time, any timezone. Change your mind up to the minute it ships.
Webhooks
Delivery confirmations, failures, and engagement events, pushed to your endpoint in one consistent format.
Engagement
Read and reply to comments across platforms through one model
Analytics
Impressions, engagement, and audience metrics, normalized across platforms.
Common questions.
What happens when a platform changes its API?
Nothing, on your side. Absorbing platform churn is the product. When a platform ships a breaking change, we migrate behind the interface — your integration doesn't move.
What if a platform changes its pricing or access terms?
We pass material changes through transparently, with advance notice — never buried in an invoice. And you're never trapped: plans are month-to-month and your data exports in full. We can't control what platforms do. We can control how honestly we handle it.
What about X, specifically?
X runs the most volatile API program in the industry, and we treat it accordingly: conservative architecture, compliant access, and immediate communication if terms shift. And if the worst happens on any single platform, the rest keep posting — that's the point of one abstraction over five dependencies.
Do I need my own developer apps or platform approvals?
No. Accounts connect through Multicast's hosted OAuth. No developer applications, no review queues, no API keys to manage per platform.
Will this put my accounts at risk?
No. Multicast works through each platform's official APIs and approved access programs — no scraping, no reverse-engineered endpoints, no automation outside platform terms. Hosted OAuth is the mechanism the platforms built for exactly this.
Which platforms are supported?
X, Instagram, TikTok, YouTube, and Facebook at launch. More are on the roadmap — tell us what you need next.
How do rate limits work?
We track each platform's limits per account and queue your requests inside them, so platform 429s are our problem. Your requests to Multicast have generous limits of their own, documented in full.
Is there a sandbox?
Yes. The full API runs against simulated accounts, so you can build and test the entire integration before connecting a real one. Sandbox usage is free and unlimited.
Coming from another unified social API?
The concepts map almost one-to-one, and most migrations fit in a weekend. Talk to us — we'll help you move.
Start free. No card required.