Postiz

Postiz is an open-source, self-hostable social media scheduling platform that has evolved into an agentic tool — meaning AI agents like Claude, ChatGPT, Codex, or OpenClaw can directly drive it through a CLI and MCP server to draft, schedule, and publish posts across social media networks.

What sets Postiz apart from traditional schedulers like Buffer or Hootsuite is its agent-first architecture. Rather than requiring human interaction through a web UI, Postiz exposes a full MCP server that lets AI agents plan content calendars, generate posts, and schedule them autonomously. Developers can prompt Postiz from Claude Code, ChatGPT, or any MCP-compatible client, turning social media management into an automated pipeline.

For non-agentic users, Postiz offers a visual calendar for planning and reviewing posts, an AI content assistant for generating and refining copy, a Canva-like design tool for creating visuals with AI image generation, and comprehensive analytics across all connected channels. It supports auto-posting, auto-liking, and auto-commenting based on milestone triggers to maximize engagement.

The platform integrates with automation tools like n8n, Make.com, and Zapier through its public API and OAuth2 SDK, making it easy to wire into existing marketing workflows. Teams can collaborate with task delegation, approval workflows, and shared content calendars.

Postiz supports 17+ platforms including X (Twitter), Instagram, LinkedIn, Facebook, Reddit, Threads, Mastodon, Bluesky, TikTok, and YouTube. Being fully open-source under Apache 2.0 and self-hostable, Postiz eliminates monthly SaaS fees for teams willing to run their own instance, while offering a cloud-hosted option for those who prefer managed infrastructure.