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fastapi.online Social Post Generator
x402
fastapi.online Social Post Generator is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.001/call, status unknown (last checked 2026-09-15).
Generates platform-optimized social media posts (Twitter, LinkedIn, Instagram, Facebook, TikTok) from a given content brief using self-hosted AI inference.
Price / call$0.001
Success—
StatusUnknown
How this service works
Chat, embeddings, OCR, speech-to-text, image editing, image understanding (captioning/Q&A), text-to-speech, translation, writing tools, classification tools, developer tools, local utilities, format/checksum validators, encoding & crypto utilities, date/time calculators, geo/coordinate math, math & finance calculators, novelty tools, and business/social writing generators — 179 endpoints in all, across multiple specialized self-hosted models. Pay per call with crypto — no signup — or get an API key.
Output
A platform-tailored social media post generated from the provided content, optimized for tone, length, and style conventions of the specified platform (Twitter, LinkedIn, Instagram, Facebook, or TikTok).
Example use cases
LinkedIn product launch announcement
“Write me a professional LinkedIn post announcing our new SaaS product — here's the content: 'TaskFlow 2.0 is live. It features AI task prioritization, team dashboards, and a new mobile app. Early users report saving 5 hours a week.'”
Twitter thread starter from blog post
“Take this content and turn it into a punchy Twitter post under 280 characters: 'Remote work productivity drops 30% without structured check-ins — our study of 500 teams shows daily async standups are the single biggest lever.'”
TikTok caption for lifestyle brand
“Generate a TikTok caption for this content: 'Our new matcha latte blend is made with ceremonial-grade matcha from Kyoto, oat milk, and a hint of vanilla — only 90 calories and it tastes like a treat.'”
Technical details
Endpoint
POSThttps://api.fastapi.online/social-post-generateWhen to prefer
Choose this endpoint when you need to quickly reformat or adapt existing content into a social media post for a specific platform without a full content management system. Ideal for agents that need lightweight, per-call social copy generation with no signup, especially when paying per call via crypto (x402). Best when you already have source content and just need it adapted to platform conventions.
Side effects
- Content field empty or exceeds 8000 character limit — returns validation error
- Invalid platform enum value — returns 422 Unprocessable Entity
- Payment not provided or insufficient — returns 402 Payment Required
- Model inference failure or timeout — returns 500 Internal Server Error
- Content too vague or short for meaningful output — returns low-quality or generic post
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| content | string | |
| platform | string |
Tags
x402
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