Post to Discord from Codex

Codex can post to Discord channels through Postiz. Install the Postiz skill or add the Postiz MCP server to Codex, connect your Discord server in Postiz, then say which channel and what to send. Codex writes the message, attaches uploaded media, and schedules it, so release notes and reminders land in Discord on time.

Setup Guide GitHub

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

Last updated: September 2026

How do I post to Discord from Codex?

Set up Codex once with the Postiz skill or the Postiz MCP server, connect Discord 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:
> Send the release notes to the
  #announcements Discord channel at 10am

Codex: Done! Your Discord post is scheduled.

Discord-Specific Features

📢

Channel Messaging

Send messages directly to any Discord channel. Target announcements, general chat, or dedicated content channels.

📎

Media Attachments

Attach images, videos, and files to your Discord messages. Share rich content with your community automatically.

⏰

Scheduled Messages

Schedule Discord messages for specific times. Perfect for announcements, event reminders, and timed content drops.

🤖

Bot Integration

Works through your Discord bot connection. Post messages as your bot to any server and channel it has access to.

💬

Community Updates

Automate recurring community updates, changelogs, and newsletters. Keep your Discord server engaged on autopilot.

📅

Multi-Channel

Post to different channels with different messages. Customize content for each channel in your Discord server.

How does Codex post to Discord?

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 Discord Integration

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

Example conversation

> Is my Discord account connected to Postiz?

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

Get Your Channel ID

Find the Discord channel ID where you want to post. In Discord, enable Developer Mode, then right-click the channel and copy its ID.

Example conversation

> Draft a Discord post about our new
  feature launch

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

Create Your Message

Schedule a Discord message with your content, optional media attachments, and the target channel ID.

Example conversation

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

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

Discord Settings Reference

Mention any of these in plain language and Codex sets them for you. These are the options every Discord message can carry.

Field	Type	Required	Description
`__type`	string	Yes	Must be "discord"
`channel`	string	Yes	Discord channel ID to post to

Common Configurations

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

Announcement Channel Message

Just ask

> Post it with: Announcement Channel Message

Codex: Got it. Applying:
  channel: 123456789012345678

Message with Media Attachment

Example

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

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

Scheduled Weekly Update

Example

> What's scheduled on Discord this week?

Codex: 6 posts on Discord: the announcement tomorrow
  at 9:00 AM and daily tips Mon-Fri at 10:00 AM.
  Want me to move or cancel any of them?

Multi-Channel Posting

Example

> What's scheduled on Discord this week?

Codex: 6 posts on Discord: the announcement tomorrow
  at 9:00 AM and daily tips Mon-Fri at 10:00 AM.
  Want me to move or cancel any of them?

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 Discord 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 Discord 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 Discord"

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

Codex: I'll handle that.
  Found your Discord 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 Discord

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 Discord workflows.

✓Runs in your terminal or IDE — just type what you want
✓Autonomous execution in sandboxed environments
✓Parallel task support — post while coding
✓Reads SKILL.md for automatic command discovery
✓Cross-post to Discord + 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 Discord
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>

# Discord Settings
channel (required channel ID)

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 Discord 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 Discord integration, identifies the right channel, and sends your message with any attachments.

Claude Code

> Send an announcement to our Discord
  #releases channel that v2.0 is live,
  attach the changelog screenshot

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

Can Codex post to Discord and other platforms at once?

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

Example

> What's scheduled on Discord this week?

Codex: 6 posts on Discord: the announcement tomorrow
  at 9:00 AM and daily tips Mon-Fri at 10:00 AM.
  Want me to move or cancel any of them?

What can I ask Codex to post on Discord?

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 Discord.

Prompts for Discord

> Send the release notes from CHANGELOG.md to the #announcements
  Discord channel at 10am

$ codex exec "Post 'Deploy finished for v2.4' with ./build/summary.png
  to the #dev-updates Discord channel now"

> $postiz Schedule a Monday 9am reminder in #general
  for the next four weeks

What Discord rules should Codex follow?

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

✓channel is required and holds the Discord channel ID; Codex resolves #channel-name through postiz integrations:settings.
✓Discord messages are limited to 2,000 characters; ask Codex to split longer updates.
✓Postiz posts through the Postiz bot, so the bot must have access to the target channel.
✓Images, video, and files go through postiz upload before they are attached.

Codex and Discord FAQ

How do I post to Discord 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 Discord in Postiz once, then ask Codex in plain English what to post and when. Codex resolves the Discord settings, uploads any media, and schedules the post.

How does Codex know which Discord channel to post in?

Postiz lists the channels the Postiz bot can see on your server through postiz integrations:settings. Codex matches the channel name in your prompt, like #announcements, to its channel ID and puts it in the required channel setting. If the bot lacks access to a channel, Codex will not find it and asks.

Can Codex attach files or images to a Discord message?

Yes. Codex uploads the file with postiz upload and attaches the returned URL to the message; raw paths and external links are not accepted by the publishing pipeline. Images, video, and documents work. Keep the text under Discord's 2,000-character limit, or ask Codex to split it into several messages.

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

Yes. Postiz stores scheduled Discord 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 Discord 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 Discord. The CLI skill route needs either postiz auth:login or a POSTIZ_API_KEY environment variable. Your Discord login itself never leaves Postiz.

Is posting to Discord 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 Discord; see the ChatGPT guide for that setup.