PostZen is a unified social media API that lets you publish and schedule posts across 10 platforms: Instagram, X, LinkedIn, Facebook, Threads, YouTube, TikTok, Pinterest, Bluesky, and Telegram.
Designed for developers and AI agents, PostZen eliminates the complexity of managing multiple OAuth flows and developer apps.
Key Features
One API, 10 platforms. A single POST request publishes to any combination of connected accounts. Platform-specific options (Instagram Reels and carousels, YouTube Shorts, TikTok photo posts, Pinterest boards, LinkedIn video, first comments) are there when you need them.
Scheduling and queues. Publish now, schedule for an exact time, or drop posts into a queue that fills preset time slots automatically.
Hosted account connection. Your users connect their own social accounts through a PostZen-hosted flow. You never register a developer app with Meta, TikTok, or LinkedIn, and you never build a single OAuth callback.
MCP server for AI agents. Every API endpoint is exposed as a tool over the Model Context Protocol, with OAuth 2.1 sign-in. Connect Claude, Cursor, Codex, or any MCP client and let an agent draft, schedule, and publish on your behalf.
Analytics. Pull post and account performance metrics through the same API you publish with.
Webhooks. Get notified when a post is published, or fails, with signed payloads.
SDKs, CLI, and OpenAPI. Official Node.js and Python SDKs, a command-line client, and an OpenAPI 3.1 spec for everything else.
Dashboard included. Compose, preview, schedule, and review posts by hand when you don't want to write code.
Benefits
Ship in an afternoon. Integrating one platform's API usually means weeks of app review, scope requests, and token-refresh edge cases. PostZen already holds the approved apps, so you start publishing the day you sign up.
No token management. Access tokens, refresh cycles, media upload protocols, and rate-limits are handled per platform behind one simple interface.
Built for agents. The MCP server and CLI mean an AI agent can operate PostZen end to end without a human clicking through a dashboard.
Predictable pricing. Flat monthly tiers with unlimited posts on every paid plan.
Start free. The free plan includes 2 connected accounts and 20 posts per month with no time limit.
FAQ
Which platforms are supported?
Instagram, X, LinkedIn, Facebook, Threads, YouTube, TikTok, Pinterest, Bluesky, and Telegram. All ten support publishing and scheduling through the same API.
Do I need my own developer apps or platform approvals?
No. PostZen owns the platform apps and has completed the reviews. You get an API key and start posting.
Can my end users connect their own accounts?
Yes. Create a profile per user and send them a hosted connect link. The accounts they authorize become available to your API key without any OAuth code on your side.
How do AI agents use PostZen?
Point Claude, Cursor, Codex, or another MCP-compatible client at the PostZen MCP server and sign in. The agent gets every API endpoint as a callable tool, scoped to read-only or read-and-write access that you can revoke at any time.
What media types can I publish?
Images, videos, and carousels, including Instagram Reels, YouTube Shorts, TikTok videos and photo posts, LinkedIn video, and Pinterest video pins. Media is uploaded once and reused across platforms.
How much does it cost?
Free: 2 accounts and 20 posts per month. Starter: $19/month for 5 accounts. Pro: $49/month for 20 accounts. Scale: $149/month for 100 accounts. Paid plans include unlimited posts, and extra accounts are $3 each per month.
Is there a dashboard, or is it API only?
Both. Everything available in the API is also available in the web dashboard, so non-technical teammates can schedule and review posts alongside your integration.
Where are the docs?
docs.postzen.dev, including the OpenAPI spec, SDK references, MCP setup guides, and a plain-text llms.txt for agents.
