Post to Facebook from Codex

Codex can post to Facebook Pages through Postiz. Install the Postiz skill or add the Postiz MCP server to Codex, connect your Facebook Page in Postiz, then ask in plain English. Codex writes the update, attaches a link for a rich preview or uploads photos and video, and schedules the post at the time you name.

Setup Guide GitHub

Please make sure there is always a human in the loop.

Last updated: September 2026

How do I post to Facebook from Codex?

Set up Codex once with the Postiz skill or the Postiz MCP server, connect Facebook in Postiz, then ask. The whole setup takes a few minutes.

Setup, then just ask

# One-time setup, option A: Postiz skill + CLI
npx skills add gitroomhq/postiz-agent
export POSTIZ_API_KEY=your_api_key   # or: postiz auth:login

# One-time setup, option B: Postiz MCP server (OAuth, no key)
codex mcp add postiz --url https://mcp.postiz.com/mcp-oauth-dynamic
codex mcp login postiz

# Then just ask Codex:
> Post our launch announcement to the
  Facebook page tomorrow at 9am

Codex: Done! Your Facebook post is scheduled.

Facebook-Specific Features

✍

Text Posts

Publish engaging text posts with emojis, hashtags, and mentions. Perfect for quick updates, announcements, and community engagement.

🔗

Link Previews

Attach URLs to generate rich link previews with title, description, and thumbnail. Drive traffic to your website or blog.

📸

Media Attachments

Upload and attach images or videos to your posts. Share visual content that drives higher engagement on Facebook.

🏢

Page Management

Post as your Facebook Page to maintain your brand voice. Schedule content for your business page effortlessly.

📊

Analytics Tracking

Track post performance with Postiz analytics. Monitor reach, engagement, and clicks across your Facebook content.

📅

Scheduled Posting

Schedule posts with precise timestamps. Plan your Facebook content calendar and let Postiz handle the publishing.

How does Codex post to Facebook?

You describe what you want in plain language and Codex handles the Postiz calls for you. Here is how a typical conversation goes.

Find Your Facebook Integration

Ask Codex whether your Facebook account is connected. It also checks which options the platform supports.

Example conversation

> Is my Facebook account connected to Postiz?

Codex: Yes — your Facebook account is connected
  and ready. Want me to post something?

Prepare Your Content

Write your post content and optionally upload media. For link posts, just include the URL in settings — Facebook generates the preview automatically.

Example conversation

> Draft a Facebook post about our new
  feature launch

Codex: Here's a draft for Facebook:
  "We just shipped something big..."
  Want me to add media and schedule it?

Create Your Post

Schedule a Facebook post with your content, optional media, and platform-specific settings like link URL for rich previews.

Example conversation

> Yes — add screenshot.png and schedule
  it for tomorrow at 9am

Codex: Done! Scheduled on Facebook for
  tomorrow at 9:00 AM.

Facebook Settings Reference

Mention any of these in plain language and Codex sets them for you. These are the Facebook options it can apply to any post.

Field	Type	Required	Description
`__type`	string	Yes	Must be "facebook"
`url`	string	No	Link URL to attach for rich link previews

Common Configurations

Ask Codex for any of these common Facebook scenarios and it applies the matching settings.

Simple Text Post

Just ask

> Post it with: Simple Text Post

Codex: Got it. Applying:
  (defaults)

Post with Link Preview

Just ask

> Post it with: Post with Link Preview

Codex: Got it. Applying:
  url: https://example.com/blog/my-article

Product Launch Announcement

Just ask

> Post it with: Product Launch Announcement

Codex: Got it. Applying:
  url: https://myproduct.com/launch

What is Codex?

Codex is OpenAI's coding agent. It runs as the Codex CLI in your terminal (npm install -g @openai/codex), as an IDE extension, and in the cloud, and it can run shell commands and call MCP servers, which is how it drives Postiz. Codex is not ChatGPT: ChatGPT is the chat assistant on chatgpt.com and connects to Postiz differently (see the ChatGPT guide). For the full setup, start at the Codex + Postiz hub.

💻

Terminal & IDE Native

Codex runs in your terminal or IDE. You type what you want in plain English and it handles Postiz for you — no extra configuration needed.

🔧

Autonomous Execution

Codex runs commands inside a sandbox with approval rules you control, and works through multi-step tasks like discovering channels, uploading media, and scheduling Facebook posts.

⚡

Parallel Tasks

Run multiple Codex tasks simultaneously. Schedule posts to different platforms in parallel while Codex handles other coding work.

How Postiz Works with Codex

Codex discovers Postiz two ways: the postiz skill, which it loads from .agents/skills or ~/.agents/skills and which you can invoke with $postiz, or the Postiz MCP server added with codex mcp add. Either way it learns the available tools and chains them for Facebook workflows.

✓Install the Postiz skill with npx skills add, or add the Postiz MCP server with codex mcp add
✓Codex loads skills from .agents/skills and reads SKILL.md to learn the Postiz CLI
✓Authenticate with POSTIZ_API_KEY or postiz auth:login; the MCP route uses OAuth instead
✓Codex runs commands in its sandbox and asks for approval based on your permission settings
✓Works alongside your coding tasks in parallel

Install Postiz

# Install the Postiz skill
npx skills add gitroomhq/postiz-agent

# Set your API key
export POSTIZ_API_KEY=your_api_key

# Or add the Postiz MCP server instead (OAuth, no API key)
codex mcp add postiz --url https://mcp.postiz.com/mcp-oauth-dynamic
codex mcp login postiz

# Then ask, interactively or headless
codex "list my social media integrations"
codex exec "post today's changelog to Facebook"

Facebook Posting with Codex

Tell Codex what to post from your terminal or IDE — it discovers your integrations via Postiz and handles the entire publishing workflow.

💻

Just Ask Codex

Terminal and IDE integration

Tell Codex what to post from your terminal or IDE — it discovers your integrations via Postiz and handles the entire publishing workflow.

Codex CLI

$ codex "Post to Facebook about our
  new feature launch, schedule for
  tomorrow at 9am"

Codex: I'll handle that.
  Found your Facebook integration.
  Composing and scheduling the post.

  Done! Your post is scheduled.
  Post ID: abc-123

💻

Parallel Tasks

Multiple tasks at once

Codex can handle multiple tasks in parallel. Schedule posts to different platforms while it works on other coding tasks simultaneously.

Codex Parallel Tasks

# Run multiple posting tasks in parallel
$ codex "Schedule a post about our
  launch to X for tomorrow 9am" &

$ codex "Write a LinkedIn article
  about our new feature and schedule
  for tomorrow noon" &

$ codex "Fix the bug in auth.ts"

# All three tasks run simultaneously

Why Codex + Postiz for Facebook

Codex's autonomous execution makes Postiz a natural fit. The agent reads the SKILL.md to understand every available command, then autonomously chains them together for Facebook workflows.

✓Runs in your terminal or IDE — just type what you want
✓Autonomous execution in sandboxed environments
✓Parallel task support — post while coding
✓Link previews generated automatically when a URL is provided
✓Cross-post to Facebook + other platforms in a single session
✓Powered by OpenAI's most capable models

SKILL.md (loaded by Codex from .agents/skills)

---
name: postiz
description: Social media automation
  CLI for scheduling posts across
  30+ platforms including Facebook
homepage: https://docs.postiz.com/public-api/introduction
---

# Loaded by Codex from .agents/skills
# Invoke explicitly with $postiz

# Available Commands
- postiz integrations:list
- postiz integrations:settings <id>
- postiz posts:create
- postiz upload <file>
- postiz analytics:platform <id>

# Facebook Settings
__type, url

Also Works with Claude Code

Postiz works with any AI agent that can run commands or call MCP tools — you ask, the agent does the work. That includes Anthropic's Claude Code: see the Claude Code Facebook guide, or the Postiz Agent page for any other agent.

Claude Code

by Anthropic

Claude reads the Postiz skill so it knows what it can do, then autonomously discovers your Facebook integration, composes your post with a link preview if needed, and schedules the post.

Claude Code

> Share our new blog post on Facebook
  with a link preview, schedule for
  tomorrow morning

Claude: Done! Scheduled on Facebook for
  tomorrow at 9:00 AM.

Can Codex post to Facebook and other platforms at once?

Schedule the same content to Facebook and other platforms in a single request. Each platform gets its own settings.

Example

> Post "Excited to announce our new feature!" to
  Facebook and LinkedIn tomorrow at 9am, then schedule
  a daily tip on Facebook every weekday at 10am

Codex: Done! Scheduled:
  - Facebook + LinkedIn: tomorrow 9:00 AM
  - Daily tips on Facebook: Mon-Fri 10:00 AM

Post Types

Text Post

No media, no URL

Link Post

Include url in settings

Media Post

Attach an image or video

What can I ask Codex to post on Facebook?

Codex takes plain-English prompts in an interactive session, as a one-off codex exec command, or through the $postiz skill. These are the kinds of prompts people type for Facebook.

Prompts for Facebook

> Post our launch announcement to the Facebook page tomorrow 9am
  with a link to the blog post

$ codex exec "Share the release video ./assets/release.mp4 on Facebook
  with a short caption, publish now"

> $postiz Schedule a Facebook post every weekday at 10am this week
  using the tips in ./content/tips.md

What Facebook rules should Codex follow?

These are the Facebook limits and required settings Postiz enforces. Codex reads them from postiz integrations:settings, and you can mention any of them in your prompt.

✓Postiz publishes to Facebook Pages you connected, not to personal profiles.
✓Put a link in the url setting and Facebook renders a rich preview from that page.
✓Photos and video must go through postiz upload before they are attached.
✓If you manage several Pages, connect each one in Postiz and name the Page in your prompt.

Codex and Facebook FAQ

How do I post to Facebook from Codex?

Install the Postiz skill with npx skills add gitroomhq/postiz-agent, or add the Postiz MCP server with codex mcp add postiz --url https://mcp.postiz.com/mcp-oauth-dynamic. Connect Facebook in Postiz once, then ask Codex in plain English what to post and when. Codex resolves the Facebook settings, uploads any media, and schedules the post.

Can Codex post to my personal Facebook profile?

No. Postiz connects Facebook Pages, which is what Meta's API allows for scheduled publishing, so Codex posts to the Page you connected in Postiz. If you manage several Pages, connect each one and name the Page in your prompt. Codex can list them with postiz integrations:list before posting.

How does Codex add a link preview to a Facebook post?

Mention the link and Codex places it in the Facebook url setting, so Facebook renders the title, description, and image from that page as a rich preview. If you would rather show your own image, attach it and Codex uploads it with postiz upload; the link then stays in the post text.

Can Codex post to Facebook on a schedule without me watching?

Yes. Postiz stores scheduled Facebook posts and publishes them at the chosen time, so Codex does not need to stay open. For unattended runs, call codex exec with your prompt from a script or cron job. Keep a human reviewing the output, since Codex will publish exactly what it is told to publish.

Do I need a Postiz API key to post to Facebook from Codex?

Not with the MCP route. Run codex mcp login postiz and Codex signs in to your Postiz account over OAuth, so it only reaches channels you already connected, including Facebook. The CLI skill route needs either postiz auth:login or a POSTIZ_API_KEY environment variable. Your Facebook login itself never leaves Postiz.

Is posting to Facebook from Codex the same as posting from ChatGPT?

No. Codex is OpenAI's coding agent for your terminal and IDE, and it reaches Postiz through the Postiz skill or MCP server. ChatGPT is the chat assistant on chatgpt.com, which connects to Postiz as an app or custom MCP connector. Both can publish to Facebook; see the ChatGPT guide for that setup.