The official agent skill for Postiz, an open source social media scheduler. Claude can upload media, prepare posts and schedule them across many networks and community platforms.

Who it is for

Social media managers
Agencies
Creators
Small businesses

Prompts to try

Once the skill is installed, ask for the result in plain words. Claude picks the skill up on its own.

Prompt 1

Schedule this announcement on LinkedIn, X and Instagram for Friday at noon

Prompt 2

Post this video to TikTok and YouTube Shorts with captions

Prompt 3

Plan and schedule a week of posts for our cafe

How to install it

In Claude Code

>/plugin marketplace add gitroomhq/postiz-agent
>/plugin install postiz@postiz-agent

In Claude.ai

Not practical in Claude.ai because the skill drives local command-line tools, so use Claude Code.

Good to know

Also listed as postiz in Anthropic's official marketplace. The skill drives the postiz CLI (npm install -g postiz).

Unlock the install steps

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How we checked it

Confirmed SKILL.md at skills/postiz/SKILL.md in gitroomhq/postiz-agent via the GitHub API; skill folder last changed 2026-10-15, repo has 521 stars and was pushed 2026-10-15; also listed in Anthropic's official marketplace.

Source: github.com/gitroomhq/postiz-agent/tree/main/skills/postiz

Postiz Social Scheduler