Automate Hashnode with Codex

Publish blog posts to Hashnode, manage publications, add cover images and canonical URLs, and tag your content — 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 Hashnode 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 Hashnode integration
postiz integrations:list

# Publish a blog post to Hashnode
postiz posts:create \
  -c "Article body..." \
  -s "2025-01-15T10:00:00Z" \
  --settings '{"title":"My Post","publication":"pub-id","tags":[{"value":"tag-id","label":"JavaScript"}]}' \
  -i "hashnode-id"

Hashnode-Specific Features

📖

Blog Publishing

Publish long-form blog posts with full Markdown support. Code blocks, embeds, and rich formatting work out of the box.

📚

Publication Support

Publish posts under your Hashnode publication. Every post requires a publication ID to target the right blog.

🖼

Cover Images

Upload and attach cover images to make your posts stand out. Eye-catching visuals drive more clicks from the Hashnode feed.

🔗

Canonical URLs

Set canonical URLs for SEO when cross-posting from your original blog. Avoid duplicate content penalties across platforms.

🏷

Required Tagging

Hashnode requires at least one tag per post. Tags use tag IDs for precise categorization and improved discoverability.

📅

Scheduled Publishing

Schedule blog posts for future publication with precise timestamps. Build a consistent publishing cadence effortlessly.

How It Works

Find Your Hashnode Integration

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

Discovery

# List all integrations
postiz integrations:list

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

# Get Hashnode settings schema
postiz integrations:settings <hashnode-id>

Prepare Your Content

Write your blog post in Markdown. Hashnode supports rich formatting including headers, code blocks with syntax highlighting, images, and embedded content. Optionally upload a cover image.

Upload

# Upload a cover image (optional)
RESULT=$(postiz upload cover.png)
IMAGE_PATH=$(echo "$RESULT" | jq -r '.path')
IMAGE_ID=$(echo "$RESULT" | jq -r '.id')

echo "Cover: $IMAGE_PATH"
# https://uploads.postiz.com/cover.png

Publish Your Post

Create a post with your content, title, publication, tags, and optional cover image and canonical URL. Remember: publication and at least one tag are required.

Publish

postiz posts:create \
  -c "Article body..." \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "title": "Getting Started with Bun",
    "subtitle": "A fast JavaScript runtime",
    "main_image": {
      "id": "img-id",
      "path": "https://uploads.postiz.com/cover.png"
    },
    "canonical": "https://myblog.com/bun",
    "publication": "pub-id",
    "tags": [
      {"value": "js-tag-id", "label": "JavaScript"},
      {"value": "bun-tag-id", "label": "Bun"}
    ]
  }' \
  -i "hashnode-id"

Hashnode Settings Reference

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

Field	Type	Required	Description
`__type`	string	Yes	Must be "hashnode"
`title`	string	Yes	Article title (min 6 characters)
`subtitle`	string	No	Article subtitle (min 2 characters)
`main_image`	object	No	Cover image: {id: string, path: string}
`canonical`	string	No	Original URL for SEO canonical link
`publication`	string	Yes	Publication ID (required)
`tags`	array	Yes	At least 1 tag: [{value: string (tag ID), label: string}]

Common Configurations

Copy-paste these settings for common Hashnode publishing scenarios.

Basic Blog Post

settings.json

{
  "title": "Understanding React Server Components",
  "publication": "my-publication-id",
  "tags": [
    {"value": "react-tag-id", "label": "React"},
    {"value": "nextjs-tag-id", "label": "Next.js"}
  ]
}

Full-Featured Post with Cover Image

settings.json

{
  "title": "Complete Guide to Node.js Streams",
  "subtitle": "Master streams for high-performance I/O",
  "main_image": {
    "id": "img-abc123",
    "path": "https://uploads.postiz.com/streams-cover.png"
  },
  "publication": "my-publication-id",
  "tags": [
    {"value": "nodejs-tag-id", "label": "Node.js"},
    {"value": "backend-tag-id", "label": "Backend"},
    {"value": "tutorial-tag-id", "label": "Tutorial"}
  ]
}

Cross-Posted Article with Canonical URL

settings.json

{
  "title": "Why We Migrated to Bun",
  "subtitle": "Our experience switching JavaScript runtimes",
  "canonical": "https://engineering.mycompany.com/migrating-to-bun",
  "publication": "company-blog-id",
  "tags": [
    {"value": "bun-tag-id", "label": "Bun"},
    {"value": "javascript-tag-id", "label": "JavaScript"},
    {"value": "devops-tag-id", "label": "DevOps"}
  ]
}

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"

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

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

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 Hashnode workflows.

✓CLI-native — runs from your terminal or IDE
✓Autonomous execution in sandboxed environments
✓Parallel task support — post while coding
✓Publication ID and tags resolved automatically from your settings
✓Cross-post to Hashnode + 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 Hashnode
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>

# Hashnode Settings
title, subtitle, main_image,
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 Hashnode integration, uploads your cover image, resolves publication and tag IDs, and publishes the post.

Claude Code

> Publish my Node.js streams guide to
  Hashnode with a cover image and tags

Claude will automatically run:
  postiz integrations:list
  postiz upload ./streams-cover.png
  postiz posts:create \
    -c "$(cat streams-guide.md)" \
    -s "2025-03-02T09:00:00Z" \
    --settings '{"title":
      "Complete Guide to Node.js Streams",
      "publication":"pub-id",
      "main_image":{"id":"...",
        "path":"uploaded-url"},
      "tags":[{"value":"nodejs-id",
        "label":"Node.js"},...]}' \
    -i "hashnode-id"

Hashnode + Other Platforms

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

Terminal

# Cross-post an article to Hashnode and Dev.to
postiz posts:create \
  -c "$(cat article.md)" \
  -s "2025-03-01T09:00:00Z" \
  --settings '{
    "title": "Understanding WebSockets",
    "publication": "my-pub-id",
    "canonical": "https://myblog.dev/websockets",
    "tags": [
      {"value": "websocket-tag-id", "label": "WebSockets"},
      {"value": "backend-tag-id", "label": "Backend"}
    ]
  }' \
  -i "hashnode-id,devto-id"

# Batch schedule a week of Hashnode posts
for day in 1 2 3 4 5; do
  postiz posts:create \
    -c "$(cat posts/day${day}.md)" \
    -s "2025-03-0${day}T10:00:00Z" \
    --settings '{"title":"Day '"$day"' Deep Dive","publication":"my-pub-id","tags":[{"value":"series-tag-id","label":"Series"}]}' \
    -i "hashnode-id"
done

Start publishing to Hashnode

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

Get Started

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