PostEverywhere for OpenAI Codex: Social Media Scheduler Plugin

PostEverywhere is a social media scheduler. This OpenAI Codex plugin lets you write, schedule and publish social media posts to Instagram, TikTok, YouTube, LinkedIn, Facebook, X, Threads, Pinterest, Bluesky, Telegram, Discord and WordPress from OpenAI Codex, plan a content calendar, cross-post video and see how every post performed.

No API key and nothing to install: it connects to the hosted PostEverywhere MCP server, and you sign in once in your browser.

What you can ask OpenAI Codex

• "Post this announcement to LinkedIn and X tomorrow at 9am."
• "Turn this changelog into a week of posts for X, Threads and Bluesky."
• "Cross-post this video to TikTok, Instagram Reels and YouTube Shorts."
• "What did I post last week, and which post did best?"
• "Why didn't my TikTok post go out? Fix it."

Install

• Codex plugin: add this repository (posteverywhere/codex-plugin) as a plugin source in Codex, then install posteverywhere.
• Agent Skills only: npx skills add posteverywhere/codex-plugin.
• MCP server: add a remote MCP server named posteverywhere with the URL https://mcp.posteverywhere.ai/mcp.

The first time you use it, sign in to PostEverywhere to connect. You need a PostEverywhere account with a plan or an active free trial: start here.

What's included

The PostEverywhere MCP server (https://mcp.posteverywhere.ai/mcp) gives OpenAI Codex tools to list your social accounts, create, schedule and publish posts, upload media from a link, manage campaigns and the posting queue, read analytics and retry failed posts. Every tool is annotated as read-only or destructive, and posts can be saved as drafts so nothing goes live until you approve it.

15 skills that teach OpenAI Codex how to use those tools well:

Skill	What it does
schedule-social-posts	Writes a post for each platform's rules, shows you a draft, and schedules or publishes it after you confirm
plan-content-calendar	Plans a week or month of posts around a goal and creates them as drafts for review
review-post-performance	Summarises how your posts performed and suggests what to try next
fix-failed-posts	Finds posts that failed, explains why, fixes the cause and retries
connect-social-accounts	Connects a new social account or reconnects one that stopped working
repurpose-content	Turns a blog post, article, transcript or notes into a set of posts for each platform
brand-voice	Learns how you write from your published posts and writes a short voice guide for you to confirm
launch-announcement	Plans a launch, event or offer as a multi-day campaign: teaser, launch day, reminder and last call
cross-post-video	Posts one video to TikTok, Instagram Reels, YouTube Shorts, LinkedIn and Facebook Reels, with a caption for each
recycle-top-posts	Finds your best past posts and schedules fresh versions of them, spaced out
approval-workflow	Saves posts as drafts for review, makes the changes asked for, and schedules them after approval
weekly-report	Writes a short weekly or monthly report, ready to paste into an email
agency-clients	Keeps each client's accounts and posts apart, and confirms the client before every action
write-x-thread-or-article	Writes an X thread or a long-form X Article (X Premium)
write-blog-post	Writes a WordPress blog post with a title, tags, categories and images, as a draft or live

Supported networks

Instagram, TikTok, YouTube, LinkedIn, Facebook, X, Threads, Pinterest, Bluesky, Telegram, Discord and WordPress. See all features and integrations.

Other ways to use PostEverywhere with AI

• Claude (Claude.ai, Desktop, Claude Code): posteverywhere/claude-plugin
• Cursor: posteverywhere/cursor-plugin
• Gemini CLI: posteverywhere/gemini-cli-extension
• Grok: posteverywhere/grok-plugin
• GitHub Copilot and VS Code: posteverywhere/copilot-plugin
• MCP server (any MCP client): posteverywhere/mcp
• CLI: posteverywhere/cli
• Node.js SDK: posteverywhere/sdk
• Python SDK: posteverywhere/posteverywhere-python
• n8n: posteverywhere/n8n-nodes-posteverywhere
• Zapier: posteverywhere/zapier-posteverywhere
• Examples: posteverywhere/examples

Docs: posteverywhere.ai/mcp and posteverywhere.ai/docs.

Data and privacy

This plugin contains only instructions (skills) and the address of the PostEverywhere MCP server. It runs no code on your computer. When you use it, OpenAI Codex sends the text, links and media you ask to post to PostEverywhere at mcp.posteverywhere.ai, over HTTPS, signed in as you. PostEverywhere publishes to the social networks you choose, only when you ask. Read the privacy policy and terms.

Support

Email support@posteverywhere.ai or read the documentation.

License

MIT. See LICENSE.