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fastapi.online — Email Draft Generator
x402
fastapi.online — Email Draft Generator is a paid API for AI agents from api.fastapi.online, paid per call via x402, $0.0015/call, status unknown (last checked 2026-09-14).
Generates a draft email given a stated intent and optional tone, using a self-hosted AI model paid per call with crypto.
Price / call$0.0015
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 composed email draft as text, ready to review, copy, and send — reflecting the stated intent and the requested tone (e.g. formal, friendly, apologetic).
Example use cases
Client follow-up after proposal
“Can you draft a professional email following up with a client who received a proposal from me five days ago? I want to check if they have questions and nudge them toward a decision without being pushy.”
Friendly cold outreach to a partner
“Write a friendly cold outreach email — the goal is to introduce my startup, Morning Bloom Coffee, to a potential distribution partner and ask for a 20-minute call to explore working together.”
Formal apology to a customer
“I need a formal apology email to send to a customer whose order arrived damaged. The tone should be sincere and professional, and I want to offer a replacement or refund.”
Technical details
Endpoint
POSThttps://api.fastapi.online/email-draftWhen to prefer
Choose this endpoint when you need a quick, pay-per-call AI email drafting service with no account signup, especially in automated agent workflows or crypto-native pipelines. It's ideal when you want a lightweight single-call solution rather than a full email platform SDK, and when paying per use with USDC is acceptable or preferred.
Side effects
- Missing or empty 'intent' field returns a validation error (minLength:1 required)
- Tone string exceeding 40 characters is rejected
- Vague or contradictory intent may produce a generic or off-target draft
- Model unavailability or self-hosted inference downtime returns a 5xx error
- Insufficient payment or expired x402 token returns a 402 Payment Required error
Input
Schema · Request body
| Field | Type | Description |
|---|---|---|
| tone | string | |
| intent | string |
Tags
x402
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