Automate LinkedIn with Codex

Schedule professional posts, create image carousels, manage company page content, and grow your LinkedIn presence — all from the command line or through your AI agent.

Setup Guide GitHub

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

Post to LinkedIn in Seconds

Terminal

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

# Set your API key
export POSTIZ_API_KEY=your_api_key

# Find your LinkedIn integration
postiz integrations:list

# Upload carousel images
SLIDE1=$(postiz upload slide1.png | jq -r '.path')
SLIDE2=$(postiz upload slide2.png | jq -r '.path')
SLIDE3=$(postiz upload slide3.png | jq -r '.path')

# Schedule a LinkedIn carousel post
postiz posts:create \
  -c "Excited to share our Q1 results! Swipe through for the highlights." \
  -m "$SLIDE1" -m "$SLIDE2" -m "$SLIDE3" \
  -s "2025-01-15T09:00:00Z" \
  --settings '{"post_as_images_carousel":true,"carousel_name":"Q1 Results"}' \
  -i "your-linkedin-integration-id"

LinkedIn-Specific Features

💼

Professional Posts

Publish polished text posts with hashtags, mentions, and links. Perfect for thought leadership and industry insights.

🖼

Image Carousels

Turn multiple images into a swipeable carousel post. Great for slide decks, infographics, and visual storytelling.

🏢

Company Pages

Post as your company page using the linkedin-page type. Manage brand content alongside personal profiles.

📊

Analytics Tracking

Track post performance with Postiz analytics. Monitor impressions, engagement, and reach across your LinkedIn content.

📷

Media Attachments

Attach images, documents, and videos to your posts. Upload through Postiz for seamless media management.

📅

Scheduled Posting

Schedule posts with precise timestamps. Plan your LinkedIn content calendar weeks in advance and let Postiz handle publishing.

How It Works

Find Your LinkedIn Integration

List your connected accounts and grab your LinkedIn integration ID. You can also fetch available settings to see what options are supported.

Discovery

# List all integrations
postiz integrations:list

# Filter for LinkedIn
postiz integrations:list | jq \
  '.[] | select(.identifier=="linkedin")'

# Get LinkedIn settings schema
postiz integrations:settings <linkedin-id>

Upload Your Media

Upload images for your carousel or single-image posts. Each upload returns a public URL that you can pass to the post creation command.

Upload

# Upload images and extract URLs
SLIDE1=$(postiz upload slide1.png | jq -r '.path')
SLIDE2=$(postiz upload slide2.png | jq -r '.path')

echo $SLIDE1
# https://uploads.postiz.com/slide1.png

echo $SLIDE2
# https://uploads.postiz.com/slide2.png

Create Your Post

Schedule a LinkedIn post with your content, images, and platform-specific settings like carousel mode and carousel naming.

Post Creation

postiz posts:create \
  -c "5 lessons from scaling to 10k users" \
  -m "$SLIDE1" -m "$SLIDE2" \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "post_as_images_carousel": true,
    "carousel_name": "Scaling Lessons"
  }' \
  -i "linkedin-id"

LinkedIn Settings Reference

Every LinkedIn post accepts these platform-specific settings via the --settings flag.

Field	Type	Required	Description
`__type`	string	Yes	Must be "linkedin" (personal) or "linkedin-page" (company page)
`post_as_images_carousel`	boolean	No	Post multiple images as a carousel. Default: false
`carousel_name`	string	No	Display name for the carousel (shown in LinkedIn UI)

Common Configurations

Copy-paste these settings for common LinkedIn posting scenarios.

Simple Text Post (Personal Profile)

settings.json

{
  "__type": "linkedin"
}

Image Carousel with Title

settings.json

{
  "__type": "linkedin",
  "post_as_images_carousel": true,
  "carousel_name": "Weekly Insights"
}

Company Page Post

settings.json

{
  "__type": "linkedin-page"
}

Company Page Carousel

settings.json

{
  "__type": "linkedin-page",
  "post_as_images_carousel": true,
  "carousel_name": "Product Roadmap Q2"
}

What is Codex?

Codex is OpenAI's autonomous coding agent that handles software engineering tasks — writing features, fixing bugs, and answering questions about your codebase. It works via CLI and IDE integrations, and can execute shell commands like Postiz.

💻

CLI & IDE Native

Codex runs from your terminal or IDE. It executes shell commands directly, making Postiz integration seamless — no extra configuration needed.

🔧

Autonomous Execution

Codex works in sandboxed cloud environments, autonomously running commands, reading output, and chaining multi-step workflows like social media posting.

⚡

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 when you install it globally. It reads the SKILL.md to understand available commands and can autonomously chain them for social media workflows.

✓Install Postiz Agent globally with npx skills add
✓Codex reads the SKILL.md and learns all Postiz commands
✓POSTIZ_API_KEY must be set in environment
✓Codex executes commands in sandboxed environments
✓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

# Codex discovers Postiz commands
# from the SKILL.md automatically
codex "list my social media integrations"

LinkedIn 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.

💻

CLI Workflow

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 LinkedIn about our
  new feature launch, schedule for
  tomorrow at 9am"

Codex: I'll handle that.
  Running: postiz integrations:list
  Found your LinkedIn integration.
  Running: postiz posts:create ...

  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 LinkedIn

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 LinkedIn workflows.

✓CLI-native — runs from your terminal or IDE
✓Autonomous execution in sandboxed environments
✓Parallel task support — post while coding
✓Reads SKILL.md for automatic command discovery
✓Cross-post to LinkedIn + other platforms in a single session
✓Powered by OpenAI's most capable models

SKILL.md (auto-discovered)

---
name: postiz
description: Social media automation
  CLI for scheduling posts across
  30+ platforms including LinkedIn
metadata:
  codex:
    requirements:
      env:
        - POSTIZ_API_KEY
      binaries:
        - postiz
---

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

# LinkedIn Settings
__type, post_as_images_carousel,
carousel_name

Also Works with Claude Code

Postiz Agent works as a CLI tool with any AI agent that can execute shell commands — including Anthropic's Claude Code.

Claude Code

by Anthropic

Claude reads the SKILL.md file to learn all available Postiz commands, then autonomously discovers your LinkedIn integration, uploads your images, creates a carousel if needed, and schedules the post.

Claude Code

> Create a LinkedIn carousel from my
  slide deck images, schedule for
  tomorrow morning

Claude will automatically run:
  postiz integrations:list
  postiz upload ./slide1.png
  postiz upload ./slide2.png
  postiz upload ./slide3.png
  postiz posts:create \
    -c "Key takeaways from Q1..." \
    -m "slide1-url" -m "slide2-url" \
    -m "slide3-url" \
    -s "2025-03-02T09:00:00Z" \
    --settings '{"post_as_images_carousel":
      true,"carousel_name":
      "Q1 Takeaways"}' \
    -i "linkedin-id"

LinkedIn + Other Platforms

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

Terminal

# Post to LinkedIn and X simultaneously
postiz posts:create \
  -c "Excited to announce our new feature! Check it out." \
  -s "2025-03-01T09:00:00Z" \
  --settings '{}' \
  -i "linkedin-id,x-id"

# Batch schedule a week of LinkedIn content
for day in 1 2 3 4 5; do
  postiz posts:create \
    -c "Day $day insight! #leadership #growth" \
    -s "2025-03-0${day}T08:00:00Z" \
    --settings '{}' \
    -i "linkedin-id"
done