PostNitro Skill for OpenClaw β Create AI Carousels from Chat
Turn your OpenClaw agent into a carousel content machine. The PostNitro skill lets your agent generate professional, on-brand carousel posts for LinkedIn, Instagram, TikTok, and X β directly from Telegram, Slack, Discord, or any chat interface. Just tell your agent what you want, and it handles the rest: AI writes the content, designs the slides, and delivers ready-to-publish files.
Platforms
LinkedIn, Instagram, TikTok, X, Threads
Output Formats
PNG images, PDF documents
AI Generation
Topic, URL, article, X thread
Free Credits
5/month (no card required)
β Free plan available Β β No credit card required Β β 5 credits/month
What Does the PostNitro Skill Do?
The PostNitro OpenClaw skill connects your AI agent to PostNitro's Embed API, giving it two powerful capabilities.
AI Carousel Generation
Your agent takes a topic, article URL, or X post and turns it into a complete, designed carousel using AI. The content is written, slides are designed, and the output is delivered as PNG images or a PDF β all without you opening a design tool.
Content Import
You provide your own slide content (headings, descriptions, images, infographics), and the skill renders it into a professionally designed carousel using your PostNitro templates and brand kit.
Both workflows are asynchronous: your agent initiates the carousel, polls for completion, and delivers the download links when it's ready. The entire process takes under a minute for most carousels.
How It Works
Step 1
Install the Skill
Run npx openclawskill install postnitro-carousel in your terminal, or add it manually from ClawHub. The skill folder contains SKILL.md with full instructions your agent reads automatically.
Step 2
Set Up Your API Key
Sign up at postnitro.ai (free plan available), then go to Account Settings β Embed β Generate API Key. Set your environment variables: POSTNITRO_API_KEY, POSTNITRO_TEMPLATE_ID, POSTNITRO_BRAND_ID, and POSTNITRO_PRESET_ID.
Step 3
Talk to Your Agent
Once installed, just message your OpenClaw agent naturally β ask it to create a carousel about a topic, convert a blog post into slides, or turn an X thread into a carousel. Your agent handles the API calls, polls for completion, and returns the download links.
Step 4
Download and Publish
Your agent delivers PNG images (individual slide files) or a single PDF document ready for LinkedIn upload. Download, review, and publish to your social platforms β or pipe them into your scheduling workflow.
Three Ways to Generate Carousels
From a Topic or Text
Give your agent a topic, outline, or raw text and it creates a full carousel. The AI writes slide content, structures the flow, and designs everything.
From an Article URL
Paste a blog post or article link. The AI extracts key points and converts them into a concise, engaging carousel.
From an X Post or Thread
Repurpose a viral X thread into a visual carousel for LinkedIn or Instagram. The AI maintains the original voice and key points.
Advanced: Import Your Own Content
For full control over slide content, use the import workflow. You define exactly what appears on each slide β headings, descriptions, images, and even infographic layouts.
Slide Rules
Every carousel needs exactly 1 starting_slide, at least 1 body_slide, and exactly 1 ending_slide. Heading is required on every slide. Body slides can include images, background images, and infographic layouts. All image URLs must be publicly accessible.
Infographic Layouts
Infographic layouts are supported on body slides β set layoutType: "infographic" to replace the image area with structured data columns. Perfect for comparison tables, step-by-step processes, and data presentations.
Use Cases for the PostNitro OpenClaw Skill
Automated Weekly Carousels
Set up an OpenClaw Job that runs every Monday, pulls topics from your content calendar or RSS feed, and generates a week's worth of carousel posts. Zero manual work.
Blog-to-Carousel Pipeline
Every time you publish a blog post, tell your agent to convert it into a carousel. Repurpose one piece of content across LinkedIn, Instagram, and TikTok instantly.
Agency Content at Scale
Manage multiple client brands with different templates and brand kits. Your agent switches between brand configurations per request, producing on-brand carousels for each client.
Viral Thread Repurposing
Monitor X for trending threads in your niche. When something goes viral, ask your agent to turn it into a carousel and post it to LinkedIn before the moment passes.
Data-Driven Infographics
Feed your agent structured data β statistics, comparisons, step-by-step processes β and it creates infographic carousels with grid or cycle layouts. No design tool needed.
Developer Automation
Build PostNitro into your own content pipeline using the REST API directly. Generate carousels programmatically via Zapier, n8n, Make, or custom scripts.
API Endpoints at a Glance
| Endpoint | Method | Description |
|---|---|---|
/post/initiate/generate | POST | Generate a carousel using AI (topic, URL, or X thread) |
/post/initiate/import | POST | Create a carousel from your own slide content |
/post/status/{embedPostId} | GET | Check generation status (poll until COMPLETED) |
/post/output/{embedPostId} | GET | Get download URLs for the finished carousel |
Base URL: https://embed-api.postnitro.aiΒ |Β Auth: embed-api-key header
Turn Your OpenClaw Agent Into a Carousel Machine
Install the PostNitro skill and start creating AI-powered carousel posts from chat. Free plan available β no credit card required.
Get Your API KeyCredits and Pricing
| Plan | Price | Credits/Month | Best For |
|---|---|---|---|
| Free | $0 | 5 credits | Testing and personal use |
| Paid | From $10/mo | 250+ (scalable) | Regular content creation |
How Credits Work
β’ AI generation costs 2 credits per slide (AI writes + designs)
β’ Content import costs 1 credit per slide (you provide content, PostNitro renders)
β’ A typical 6-slide AI carousel costs 12 credits
β’ A typical 6-slide imported carousel costs 6 credits
What Makes PostNitro Different from Other OpenClaw Social Skills
| Feature | PostNitro Skill |
|---|---|
| AI carousel generation | Yes β writes content + designs slides |
| Visual output | PNG images + PDF per slide |
| Brand consistency | Full brand kits (fonts, colors, logos) |
| Infographic layouts | Grid + cycle data layouts |
| Input sources | Topic, URL, article, X thread |
| Platforms optimized for | LinkedIn, Instagram, TikTok, X, Threads |
| API for custom integration | Yes β REST API + Embed SDK |
| Free tier | 5 credits/month |
PostNitro is the only OpenClaw skill that generates complete, designed carousel posts β not just text content or basic slideshows. The AI handles both copywriting and visual design, delivering files you can publish immediately.
Frequently Asked Questions
Turn Your OpenClaw Agent Into a Carousel Machine
Install the PostNitro skill and start creating AI-powered carousel posts from chat. Free plan available β no credit card required.
Install Skill from ClawHub