Automate Medium with Codex

Publish articles to Medium, manage publications, set canonical URLs for SEO, and organize with tags — all from the command line or through your AI agent.

Setup Guide GitHub

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

Publish to Medium 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 Medium integration
postiz integrations:list

# Publish an article to Medium
postiz posts:create \
  -c "Article body in markdown..." \
  -s "2025-01-15T10:00:00Z" \
  --settings '{"title":"My Article","subtitle":"A deep dive","tags":[{"value":"tech","label":"Tech"}]}' \
  -i "medium-id"

Medium-Specific Features

📝

Article Publishing

Publish long-form articles directly to Medium with full Markdown support. Write once, publish seamlessly.

📚

Publication Support

Publish articles under any Medium publication you belong to. Reach established audiences with a single setting.

🔗

Canonical URLs

Set canonical URLs for SEO to link back to your original content. Avoid duplicate content penalties across platforms.

🏷

Smart Tagging

Add up to 4 tags per article to improve discoverability. Tags help Medium surface your content to the right readers.

📅

Scheduled Publishing

Schedule articles for future publication with precise timestamps. Plan your content calendar weeks in advance.

🤖

AI-Powered Workflows

Let AI agents draft, format, and publish your articles. From idea to published post without leaving your chat app.

How It Works

Find Your Medium Integration

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

Discovery

# List all integrations
postiz integrations:list

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

# Get Medium settings schema
postiz integrations:settings <medium-id>

Write Your Article

Compose your article content in Markdown. Medium supports rich formatting including headers, code blocks, images, and embedded links.

Content

# Write your article content
cat > article.md << 'EOF'
# Building Better APIs

APIs are the backbone of modern software.
Here's how to design them right.

## Key Principles

1. **Consistency** - Use predictable patterns
2. **Versioning** - Plan for change
3. **Documentation** - Make it discoverable
EOF

Publish Your Article

Create a post with your article content, title, subtitle, tags, and optional publication and canonical URL settings.

Publish

postiz posts:create \
  -c "$(cat article.md)" \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "title": "Building Better APIs",
    "subtitle": "A practical guide to API design",
    "canonical": "https://myblog.com/better-apis",
    "publication": "pub-id",
    "tags": [
      {"value": "api", "label": "API"},
      {"value": "software", "label": "Software"}
    ]
  }' \
  -i "medium-id"

Medium Settings Reference

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

Field	Type	Required	Description
`__type`	string	Yes	Must be "medium"
`title`	string	Yes	Article title (min 2 characters)
`subtitle`	string	Yes	Article subtitle (min 2 characters)
`canonical`	string	No	Original URL for SEO canonical link
`publication`	string	No	Publication ID to publish under
`tags`	array	No	Up to 4 tags: [{value: string, label: string}]

Common Configurations

Copy-paste these settings for common Medium publishing scenarios.

Simple Article with Tags

settings.json

{
  "title": "Getting Started with TypeScript",
  "subtitle": "A beginner-friendly introduction",
  "tags": [
    {"value": "typescript", "label": "TypeScript"},
    {"value": "javascript", "label": "JavaScript"},
    {"value": "programming", "label": "Programming"}
  ]
}

Cross-Posted Article with Canonical URL

settings.json

{
  "title": "How We Scaled to 1M Users",
  "subtitle": "Lessons from our growth journey",
  "canonical": "https://engineering.myblog.com/scaling-to-1m",
  "tags": [
    {"value": "startup", "label": "Startup"},
    {"value": "scaling", "label": "Scaling"},
    {"value": "engineering", "label": "Engineering"}
  ]
}

Publication Article

settings.json

{
  "title": "The Future of AI Agents",
  "subtitle": "Why autonomous agents are the next paradigm",
  "publication": "towards-data-science-id",
  "tags": [
    {"value": "ai", "label": "Artificial Intelligence"},
    {"value": "agents", "label": "AI Agents"},
    {"value": "automation", "label": "Automation"},
    {"value": "future", "label": "Future"}
  ]
}

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"

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

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

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 Medium workflows.

✓CLI-native — runs from your terminal or IDE
✓Autonomous execution in sandboxed environments
✓Parallel task support — post while coding
✓Canonical URLs applied automatically when cross-posting from your blog
✓Cross-post to Medium + 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 Medium
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>

# Medium Settings
title, subtitle, canonical,
publication, tags

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 Medium integration, formats your article, applies tags and publication settings, and publishes the post.

Claude Code

> Publish my API design article to Medium
  under the engineering publication with
  a canonical URL back to my blog

Claude will automatically run:
  postiz integrations:list
  postiz posts:create \
    -c "$(cat api-design.md)" \
    -s "2025-03-02T09:00:00Z" \
    --settings '{"title":
      "Building Better APIs",
      "subtitle":"A practical guide",
      "canonical":"https://myblog.com/apis",
      "publication":"eng-pub-id",
      "tags":[...]}' \
    -i "medium-id"

Medium + Other Platforms

Publish the same article to Medium and other platforms in a single command. Each platform gets its own settings.

Terminal

# Cross-post an article to Medium and Dev.to
postiz posts:create \
  -c "$(cat article.md)" \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "title": "Building Better APIs",
    "subtitle": "A practical guide",
    "canonical": "https://myblog.com/better-apis",
    "tags": [
      {"value": "api", "label": "API"},
      {"value": "software", "label": "Software"}
    ]
  }' \
  -i "medium-id,devto-id"

# Batch schedule a week of Medium articles
for day in 1 2 3 4 5; do
  postiz posts:create \
    -c "$(cat articles/day${day}.md)" \
    -s "2025-03-0${day}T08:00:00Z" \
    --settings '{"title":"Day '"$day"' Insights","subtitle":"Weekly series","tags":[{"value":"series","label":"Series"}]}' \
    -i "medium-id"
done

Start publishing to Medium

Install Postiz Agent and automate your Medium content strategy with AI-powered scheduling and publishing.

Get Started

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