About supapost - the API-first AI content platform
supapost started with a simple observation: every team needs content across multiple channels, but the tools available are designed for manual, one-at-a-time creation. We believe content production should be programmatic, like infrastructure, not arts and crafts.
What is supapost?
supapost is an API-first AI content generation platform. It produces engaging social media posts and human-sounding replies for X, LinkedIn, Instagram, and Facebook through REST endpoints, with brand voice stored per workspace. Blog articles, newsletters, and DALL-E 3 images are supported as secondary content types.
It sits in the AI content generation category alongside tools such as Jasper, Copy.ai, Typefully, and Taplio, and next to raw model APIs like the OpenAI API. The difference is where the brand context lives. supapost keeps voice, tone, audience, and content pillars on the workspace rather than in a prompt, which is what lets one account serve many brands without their voices bleeding together.
Our Mission
Make high-quality, on-brand content accessible to every team through AI and automation. Whether you're a solo founder publishing across 4 platforms or an agency managing 50 client brands, you should be able to generate consistent content with a single API call.
What We Believe
API-First
Content creation should be programmable. If you can automate it, you should.
Brand Consistency
Your voice should be the same everywhere. AI should enforce that, not fight it.
Human Strategy
AI handles production. Humans handle strategy, taste, and judgment.
The Stack
supapost is built on modern infrastructure: Next.js for the web app, Supabase for the database and auth, OpenAI GPT-4o for content generation, DALL-E 3 for image creation, and Dodo Payments for billing. The API is REST-based with Bearer token authentication and per-plan rate limiting.
About supapost
What does supapost do?
supapost generates engaging social media posts and smart replies through a REST API. Brand voice is detected from a website URL and stored per workspace, so every call returns on-brand content for X, LinkedIn, Instagram, and Facebook. Blog articles and email newsletters are supported as secondary content types.
Who is supapost for?
Developers wiring content generation into an application or automation, agencies running one workspace per client brand, SaaS platforms embedding an AI writing feature, and creators who publish across several channels. It suits teams that generate content from a workflow rather than from a text editor.
How is supapost different from ChatGPT or Jasper?
ChatGPT is a general chatbot that forgets your brand between conversations. Jasper is a UI-first writing tool. supapost is API-first with persistent per-workspace brand context, platform-specific formatting, a dedicated reply mode, and multi-brand isolation, which is what production content pipelines need.
What models power supapost?
OpenAI GPT-4o generates text and DALL-E 3 generates images. On top of the model sits a layer of patterns extracted from social posts that measurably performed, which is what separates output from generic model text. The application runs on Next.js and Supabase and bills through Dodo Payments.
Is there a free plan?
Yes. The free plan includes 10 generated social posts a month, 50 API requests a day, brand voice detection from a URL, and one workspace, with no credit card required. Pro is $29 a month and Agency is $99 a month; Enterprise volume is quoted individually.
Want to build with us?
We're always looking for feedback. Try the API and tell us what you think.
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