Create engaging,
on-brand social posts
via API
Generate posts that get clicks, plus smart replies that sound human, not robotic. Put your entire social presence on autopilot. Built for Claude Code, n8n, and agentic workflows.
Build content pipelines with the API
REST endpoints, Bearer auth, typed JSON responses. Generate content programmatically with one call.
API DocsManage multiple brands at scale
One workspace per client. Separate brand voices, API keys, and usage tracking. Scale without adding headcount.
Learn moreReplies that sound like you, not a bot
Generate natural, contextual replies to comments and mentions. No generic “Thanks for sharing!” responses. Smart, on-brand engagement that builds real relationships. Combined with post generation, your entire social communication runs on autopilot.
See the API{
"type": "reply",
"platform": "linkedin",
"originalPost": "Great insights on API-first
content strategy!",
"tone": "conversational"
}{
"reply": "Appreciate that! We've seen
teams cut their content production
time by 80% once they switch to
API-first. What's your current
workflow look like?",
"variations": ["...", "..."]
}Brand Detection
Auto-detect your brand voice from any URL
Enter your website URL. Our AI analyzes your site to detect industry, voice, tone, target audience, content themes, and brand colors - in seconds.
Generate content at scale with the API
One unified API for social posts, blog articles, newsletters, cross-platform strategies, and content repurposing. Clear docs, typed responses, rate limit headers.
API ReferenceFeatures
Post Generation API
Generate engaging social posts for X, LinkedIn, Instagram, and Facebook. Trained on top-performing content patterns.
Smart Reply Generation
Generate natural, human-sounding replies to comments and mentions. Not robotic, not promotional. Contextually smart.
Brand Voice Detection
Enter your URL. AI analyzes your site and auto-configures voice, tone, industry, and audience in seconds.
Cross-Platform Strategy
Generate a cohesive content plan across every platform from one topic. Each piece native to its platform.
Blog & Newsletter
SEO-optimized blog posts and email newsletters as secondary content types. Title, sections, meta, CTAs.
Image Generation
Create visuals with DALL-E 3 via API. Attach brand assets to any generated content.
How it works
From URL to content in 60 seconds
Enter your brand URL
During onboarding, paste your website URL. Our AI analyzes it to detect your industry, voice, tone, audience, and content themes.
Review & refine
Check the detected brand profile. Adjust voice, tone, or content pillars. Save your workspace. Takes 30 seconds.
Generate via API
Use your API key to generate content. One endpoint for social posts, blogs, and newsletters, all in your brand voice.
For Creators
AI-powered posts for every platform
Stop staring at blank screens. Generate on-brand content for X, LinkedIn, Instagram, Facebook, your blog, and newsletter, all tuned to your voice.
platforms supported
X, LinkedIn, Instagram, Facebook, Blog, Newsletter
API requests/day free
Every plan includes API access. Scale as you grow.
brand setup
Enter your URL. AI detects your brand. Start generating.
Pricing
Simple, transparent pricing
Start free. Scale with your content needs. API access on every plan.
free
Free
Try the API and experience the quality
- 10 AI-generated social posts/month
- All platforms (X, LinkedIn, Instagram, FB)
- Brand voice detection from URL
- Engagement-optimized templates
- API access (50 req/day)
- 1 workspace · 1 API key
- Community support
pro
Pro
For creators and brands publishing consistently
- 100 AI-generated posts/month
- Blog & newsletter generation
- Content repurposing & strategy
- Image generation (20/mo)
- Content scheduling
- Brand asset library
- API access (500 req/day)
- 3 workspaces · 5 members each
- Email support
agency
Agency
For agencies managing multiple client brands
- 500 AI-generated posts/month
- Everything in Pro
- Image generation (100/mo)
- API access (2,000 req/day)
- 10 workspaces · 20 members each
- Per-workspace API keys
- White-label ready
- Priority support
enterprise
Enterprise
Custom volume, dedicated infrastructure, SLA
- Custom post volume
- Custom API rate limits
- Unlimited workspaces & members
- Custom image generation limits
- Dedicated account manager
- SLA & uptime guarantee
- SSO & advanced security
- Custom integrations
A word from our happy customers
“I used to spend hours writing blog posts and social content separately. Now SupaPost does both in minutes.”
Alex R.
Indie Hacker
“Managing 8 client accounts across LinkedIn, X, and newsletters used to take my whole team. Now it's just me.”
Sarah M.
Content Agency Owner
“The cross-platform strategy feature is insane. I finally know exactly what to post where and when.”
Dan K.
SaaS Founder
Frequently asked questions
What is an AI content generation API?
An AI content generation API lets you create social media posts, blog articles, and newsletters programmatically, by sending a request to an endpoint instead of writing manually. SupaPost.ai is purpose-built for this: one API call returns platform-ready content tuned to your brand voice.
How does AI brand voice detection work?
Enter your website URL and our AI analyzes your site to detect your industry, brand voice, tone, target audience, and content themes. This brand context is saved to your workspace and automatically applied to every piece of content generated via the API.
Can I automate social media content with an API?
Yes. SupaPost provides a REST API that generates content for X (Twitter), LinkedIn, Instagram, and Facebook. Every plan includes API access: 100 requests/day on Free, 1,000 on Pro, and 10,000 on Agency. Use it to build automated content pipelines.
How is SupaPost different from ChatGPT or Jasper?
ChatGPT is a general-purpose chatbot. Jasper is a UI-first writing tool. SupaPost is an API-first content platform with persistent brand context, platform-specific formatting, multi-workspace management for agencies, and a production REST API with rate limiting and usage tracking.
Can I manage multiple brands with SupaPost?
Yes. Each workspace has its own brand profile, API keys, and asset library. Agencies use separate workspaces per client, each with unique brand voice, industry, and content settings. Switch between workspaces instantly.
Can I generate LinkedIn posts programmatically?
Yes. Use the /api/v1/content/generate endpoint with platform set to 'linkedin'. The AI adapts content length, formatting, and tone specifically for LinkedIn's algorithm and audience. Same endpoint works for X, Instagram, Facebook, blogs, and newsletters.
Is there a free AI content API?
Yes. SupaPost's free plan includes 30 AI-generated pieces per month, API access with 100 requests/day, brand voice detection, and 1 workspace. No credit card required. Upgrade to Pro ($29/mo) or Agency ($99/mo) for higher limits.
How do I repurpose content across platforms?
Use the /api/v1/content/repurpose endpoint. Send your existing content, specify the target platform and format, and get back a platform-native version. Turn a blog post into a LinkedIn thread, a tweet into an Instagram caption, or a newsletter into social posts.
Can the API generate replies to comments?
Yes. Use type 'reply' with the original comment text. The AI generates natural, human-sounding responses, not robotic or promotional. It understands context, matches your brand voice, and creates replies that build genuine engagement. Combined with post generation, your entire social presence runs on autopilot.