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fastapi.online — Newsletter Generator
x402
fastapi.online — Newsletter Generator is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.002/call, status unknown (last checked 2026-09-15).
Generates a complete newsletter draft for a given topic, structured into specified sections, using a self-hosted AI model.
Price / call$0.002
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 fully generated newsletter draft containing content organized by the requested sections and focused on the given topic, returned as text from a self-hosted AI model.
Example use cases
Weekly business update newsletter
“Write a newsletter for our SaaS startup about our new product launch. Include sections for What's New, Customer Stories, and Upcoming Events.”
Health and wellness email digest
“Generate a newsletter on mental health and mindfulness for our community. I want sections for Editor's Note, Featured Article, Quick Tips, and Resources.”
Crypto and Web3 audience newsletter
“Draft a newsletter covering the latest trends in decentralized finance. Sections should be: Market Overview, Top Projects to Watch, and How to Get Started.”
Technical details
Endpoint
POSThttps://api.fastapi.online/newsletter-generateWhen to prefer
Choose this endpoint when you need a quick, structured newsletter draft generated from a topic and custom section outline, without requiring a full LLM API integration. It is well-suited for agents automating content pipelines, where paying per call with crypto (no signup required) is convenient and the cost per newsletter ($0.002 USDC) is minimal.
Side effects
- Missing or empty topic field returns a validation error
- Sections field exceeds 1000 character limit and is rejected
- Self-hosted model unavailability causes 5xx errors
- Payment not submitted or insufficient causes 402 Payment Required response
- Malformed request body returns 422 Unprocessable Entity
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| topic | string | |
| sections | string |
Tags
x402
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