Automate X with Codex

Schedule tweets, control reply permissions, post threads, and publish to X Communities — 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 X 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 X integration
postiz integrations:list

# Schedule a post on X
postiz posts:create \
  -c "Hello world! #buildinpublic" \
  -s "2025-01-15T09:00:00Z" \
  --settings '{"who_can_reply_post":"everyone"}' \
  -i "your-x-integration-id"

# Post a thread (multiple -c flags)
postiz posts:create \
  -c "Thread time! Here's what I learned this week..." \
  -c "1/ First, always ship small increments." \
  -c "2/ Second, get feedback early and often." \
  -c "3/ Third, automate everything you can." \
  -s "2025-01-15T10:00:00Z" \
  --settings '{"who_can_reply_post":"everyone"}' \
  -i "your-x-integration-id"

X-Specific Features

🗣

Reply Controls

Control who can reply to your posts: everyone, people you follow, mentioned users, subscribers, or verified accounts only.

🧵

Thread Support

Create multi-tweet threads by passing multiple -c flags. Each flag becomes a separate tweet in the thread, posted in order.

🏘

Community Posting

Post directly to X Communities by providing a community URL. Reach targeted audiences with relevant content.

✍

Simple Text Posts

Quickly publish text-only tweets with hashtags, mentions, and links. No media upload required for basic posts.

📸

Media Attachments

Attach images or videos to your posts. Upload media through Postiz and include it seamlessly in your scheduled tweets.

📅

Scheduled Posting

Schedule posts with precise timestamps. Queue up a week of content in minutes and let Postiz handle the publishing.

How It Works

Find Your X Integration

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

Discovery

# List all integrations
postiz integrations:list

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

# Get X settings schema
postiz integrations:settings <x-id>

Compose Your Content

Write your tweet or thread. Use multiple -c flags to create threads. Add media with the -m flag after uploading through Postiz.

Compose

# Simple tweet
postiz posts:create \
  -c "Just shipped a new feature!" \
  --settings '{"who_can_reply_post":"everyone"}' \
  -i "x-id"

# Thread with multiple tweets
postiz posts:create \
  -c "Big announcement incoming..." \
  -c "We just hit 10k users!" \
  -c "Here's what we learned along the way." \
  --settings '{"who_can_reply_post":"everyone"}' \
  -i "x-id"

Schedule & Publish

Schedule your post for a specific time or publish immediately. Set reply controls and optionally target an X Community.

Post Creation

postiz posts:create \
  -c "Check out our latest blog post!" \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "who_can_reply_post": "everyone",
    "community": "https://x.com/i/communities/123"
  }' \
  -i "x-id"

X Settings Reference

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

Field	Type	Required	Description
`__type`	string	Yes	Must be "x"
`who_can_reply_post`	string	Yes	Who can reply: everyone, following, mentionedUsers, subscribers, verified
`community`	string	No	X Community URL to post into

Common Configurations

Copy-paste these settings for common X posting scenarios.

Public Post — Everyone Can Reply

settings.json

{
  "who_can_reply_post": "everyone"
}

Followers Only Replies

settings.json

{
  "who_can_reply_post": "following"
}

Community Post with Verified Replies

settings.json

{
  "who_can_reply_post": "verified",
  "community": "https://x.com/i/communities/1234567890"
}

Mentioned Users Only

settings.json

{
  "who_can_reply_post": "mentionedUsers"
}

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"

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

Codex: I'll handle that.
  Running: postiz integrations:list
  Found your X 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 X

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 X 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 X + 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 X
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>

# X Settings
who_can_reply_post, community

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 X integration, composes your tweet or thread, applies reply settings, and schedules the post.

Claude Code

> Post a thread about our product launch
  on X, schedule for tomorrow, everyone
  can reply

Claude will automatically run:
  postiz integrations:list
  postiz posts:create \
    -c "Big news! We just launched..." \
    -c "Here's what makes it special..." \
    -c "Try it out today at..." \
    -s "2025-03-02T09:00:00Z" \
    --settings '{"who_can_reply_post":
      "everyone"}' \
    -i "x-id"

X + Other Platforms

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

Terminal

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

# Batch schedule a week of X content
for day in 1 2 3 4 5; do
  postiz posts:create \
    -c "Day $day tip! #dailytips" \
    -s "2025-03-0${day}T10:00:00Z" \
    --settings '{"who_can_reply_post":"everyone"}' \
    -i "x-id"
done