Postiz: The Open-Source Social Media Scheduler That Lets AI Agents Post for You

Postiz is a social media management platform for scheduling, automating and analyzing your content, and its open-source edition does the whole job for free. You connect your channels, plan posts on a visual calendar, publish everywhere at once, check how each post performed, and invite team members to collaborate, comment and schedule alongside you. The project calls itself the ultimate agentic social media scheduling tool, and the agentic part is what separates it from the dozen other schedulers on GitHub.

The numbers explain why it caught on. The repository has 38,946 stars, it reports over 7 million downloads, and it is still being updated, with commits landing days ago. Under the hood it is a TypeScript monorepo: Next.js on the front end, NestJS on the back end, Prisma over PostgreSQL, Temporal for scheduled work and Redis for queues. That stack matters less than what it buys you. The same core product ships two ways, as Postiz Cloud, the fully managed service, and as the open-source edition you deploy on your own server. The team is explicit that they do not gate features or limit the license. The difference between the two is who runs the infrastructure, not what the software can do.

Here is the feature that makes Postiz a 2026 tool rather than a 2019 one. You can tell ChatGPT, Claude, Codex, OpenClaw, Cursor, Perplexity Computer, nanoclaw or Paperclip to create and schedule posts for you, and they do it through Postiz directly. The project ships an MCP server, a CLI and dedicated connectors for the major agents, plus a Smart Agent of its own. In practice that means a plain-language instruction like "schedule a post about our launch tomorrow at 9am on X, LinkedIn and Instagram" becomes a real scheduled post, not a draft you still have to copy somewhere.

If you would rather wire it yourself, the same idea holds through the API. Postiz has a public API and webhooks, a Node.js SDK, an n8n custom node and a Make.com integration, so it slots into automations alongside Zapier-style tools. RSS auto-post is built in too: a new blog post or video can turn into scheduled social posts without anyone touching the dashboard. The point is not that AI writes your content for you. It is that the boring middle step, opening five apps and pasting the same post five times, stops being your job.

Postiz schedules to 14 channels: Instagram, YouTube, TikTok, Facebook, X, LinkedIn, Threads, Bluesky, Mastodon, Reddit, Pinterest, Dribbble, Slack and Discord. One composer, one calendar, and the post goes out everywhere you picked. Around that core sit the features teams actually live in: cross-posting, repeated posts for evergreen content, delays between posts, post sets, signatures, and comments on posts so a teammate can approve or fix copy before it goes out.

Analytics covers the other half of the job. You can measure each post and each channel from the same dashboard instead of opening 14 analytics tabs. Customer groups and internal and global plugs let agencies and larger teams organize clients and reuse content blocks. None of this is exotic on its own. The appeal is that all of it, every channel and every feature, is included in the free self-hosted edition with no per-seat or per-post counting.

Self-hosted Postiz is free forever under AGPL-3.0, with unlimited channels, unlimited posts per month and unlimited team members, and your data never leaves your own server. That is the whole pitch, and it is real. But free software is not free effort, and the README is unusually honest about the trade. You deploy it yourself with Docker, Coolify, Railway or any VPS, and you configure PostgreSQL, Redis, storage and environment variables. You create your own developer apps on each social platform and go through their approval process, which for Meta, YouTube and TikTok can take weeks. AI features like the copilot, AI images, AI videos and the Smart Agent work self-hosted, but you bring your own provider API keys and pay the provider. Updates, backups and security patches are your job too.

Postiz Cloud flips all of that. You sign up, the platform apps are pre-approved for every channel, and you are posting in minutes, with a 7-day free trial. What you pay for is the managed part: a subscription per plan, with limits on channels, posts and team members by tier, and monthly quotas on AI features. If you want to try the product before committing to a server, Cloud is the fast path. If you want the unlimited version and you can run a Docker container, self-hosting is the better deal, and the docs point you at a quick-start guide to get there.

Postiz fits three people best. Creators who post daily and are tired of paying a scheduler that charges per channel. Small teams that need one calendar, approvals and analytics without an enterprise contract. And agencies managing several clients, where customer groups and unlimited seats make the self-hosted math obvious. The agentic features are a bonus for anyone already living inside ChatGPT or Claude all day.

Three things to watch before you commit. First, self-hosting is a real deployment, not a one-click install, and the platform approval wait is the longest part of the setup. Second, AGPL-3.0 has teeth: if you modify Postiz and offer it as a service to others, you owe those users the source of your modified version. Using it for your own posting is unaffected. Third, the AI features are only as cheap as your provider keys. The software does not charge you, but the model calls behind the copilot and the Smart Agent still show up on your OpenAI bill. None of these are reasons to skip it. They are the difference between adopting it with eyes open and bouncing off it in week two.