AI Blog Post & Long-Form Article Generator API for Developers

Definition

What is the AI Blog Post & Long-Form Article Generator API?

AI Blog Post & Long-Form Article Generator API is a REST API on RSFlowHub for web, mobile and AI agent applications. Send a JSON request to POST /api/v1/ai/blog-generator with your API key; RSFlowHub runs it on a tuned AI model, falls back to a backup provider if needed, and returns a structured JSON result, usually within 1 to 3 seconds.

Category: Text & Language
Endpoint: POST /api/v1/ai/blog-generator
Authentication: X-API-Key header
Price: 3 credits per call
Rate limit: 10 to 120 requests / minute by plan
Typical response: 1 to 3 seconds
Format: JSON, UTF-8

Request parameters

Send these fields as a JSON body. An invalid or missing field returns a 422 error that names the field.

Field	Type	Required	Description
`topic`	string	Required	Main topic or title of the blog post to generate.
`keywords`	array	Optional	Target SEO keywords to incorporate naturally (e.g. ["remote security", "MFA", "VPN"]).
`tone`	string	Optional	Writing tone ("informative", "authoritative", "conversational", "technical"). Default: "informative".
`word_count`	integer	Optional	Target article word count (e.g. 500, 1000, 1500).
`outline`	array	Optional	Optional array of specific H2 headings to cover.

Code examples

Copy, replace rfh_your_api_key with your key and run. Prefer a client library? See the official SDKs.

request.sh

curl -X POST "https://rsflowhub.com/api/v1/ai/blog-generator" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: rfh_your_api_key" \
  -d '[]'

client.php

<?php

$client = new \GuzzleHttp\Client();
$response = $client->post('https://rsflowhub.com/api/v1/ai/blog-generator', [
    'headers' => [
        'Content-Type' => 'application/json',
        'X-API-Key'    => 'rfh_your_api_key',
    ],
    'json' => array (
    ),
]);

echo $response->getBody();

client.js

const response = await fetch('https://rsflowhub.com/api/v1/ai/blog-generator', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'X-API-Key': 'rfh_your_api_key'
  },
  body: JSON.stringify([])
});

const data = await response.json();
console.log(data);

main.py

import requests

url = "https://rsflowhub.com/api/v1/ai/blog-generator"
headers = {
    "Content-Type": "application/json",
    "X-API-Key": "rfh_your_api_key"
}
payload = []

response = requests.post(url, json=payload, headers=headers)
print(response.json())

Response

Every RSFlowHub endpoint uses the same envelope, so one parser handles all of them. Failed calls are not charged.

response.json

{
    "success": true,
    "request_id": "req_3f9a2c7e-5b1d-4e8a-9c2f-7d6e1a0b4c8d",
    "data": {
        "result": {
            "message": "See the API reference for the full result schema."
        }
    },
    "meta": {
        "version": "v1",
        "timestamp": "2026-10-05T09:30:00Z"
    }
}

error.json

{
    "success": false,
    "request_id": "req_8c1d4e2a-7f3b-4a9c",
    "error": {
        "code": "VALIDATION_ERROR",
        "message": "The given data was invalid.",
        "details": {
            "topic": [
                "This field is required."
            ]
        }
    },
    "meta": {
        "version": "v1",
        "timestamp": "2026-10-05T09:30:00Z"
    }
}

Envelope fields
Field	Type	Meaning
`success`	boolean	true when the call worked, false on any error.
`request_id`	string	Unique id for this call. Quote it when you contact support.
`data.result`	object	The result of this endpoint (see the example).
`error`	object	Only on failure: code, message and details per field.
`meta`	object	API version and server timestamp.

All error codes: Errors reference

Features

Structured Heading Outline (H2/H3)

Automatically formats logical article sections complete with HTML `<h2>`, `<h3>`, and paragraph tags.

Targeted SEO Keyword Integration

Seamlessly weaves primary and secondary SEO keywords into headings and body content naturally.

Tone & Audience Customization

Select between informative, authoritative, conversational, or technical writing styles.

Bullet Point & Key Takeaways

Generates executive summary bullet lists and key takeaway callout boxes for enhanced readability.

Use cases

How teams use the AI Blog Post & Long-Form Article Generator API in production.

CMS & Blogging Platforms

Content Marketing Publishing Automation

Auto-generate draft blog posts for WordPress and Ghost CMS based on weekly trending topics.

Input: Write a blog post about "10 Essential Cybersecurity Practices for Remote Teams".
Output: {"title": "10 Essential Cybersecurity Practices for Remote Teams", "html_content": "<h2>1. Enforce Multi-Factor Authentication</h2><p>Securing remote access starts with MFA...</p>"}

Saves content marketing teams 4+ hours per blog article.

Digital Marketing SaaS

SEO Agency Content Scaling

Produce high-quality niche SEO articles at scale for client marketing blogs.

Input: Write a comprehensive guide on "How to Choose the Best CRM for Small Business".
Output: {"title": "The Ultimate Guide to Small Business CRMs in 2026", "word_count": 1200}

Produces first drafts at scale so writers spend time editing, not starting from scratch.

SaaS Documentation

Knowledge Base & User Guide Generation

Convert feature updates into step-by-step user guide articles for customer help centers.

Input: Explain how to set up webhook notifications in RSFlowHub.
Output: {"title": "Step-by-Step Webhook Setup Guide", "category": "tutorials"}

Keeps customer documentation up to date automatically.

AI Blog Post & Long-Form Article Generator API vs building it yourself

The same job done three ways.

Topic	RSFlowHub API	Raw LLM prompts	Rules / regex
Output	Validated JSON fields	Free text you have to parse	Fixed patterns only
Setup	One POST request, no prompts	Write and maintain prompts and parsing	Write and maintain rule lists
Provider outage	Automatic fallback to a backup model	You build retries and a second vendor	Not applicable
Pricing	3 credits per call, failed calls free	Per token, per vendor	Your own servers and upkeep
Understands context	Yes, AI model	Yes, AI model	No, keywords only

Frequently asked questions

Does the generated blog content pass AI & plagiarism checks?

Yes. The engine creates 100% original content structured with natural human-like transitions and authentic phrasing.

Can I specify custom H2 headings for the outline?

Yes! Passing an outline array forces the generation engine to construct dedicated sections matching your exact outline.

How fast is the Blog Post Generator API?

Blog Post Generator requests usually complete in 1 to 3 seconds, depending on input length and the AI model. Identical repeat requests are served from cache and return faster.

Does the API format HTML tags like <h2>, <h3>, and <ul>?

Yes! The returned content includes clean, semantic HTML formatting ready to paste directly into your CMS editor.

How many credits does each request consume?

Standard Blog Post Generator API calls consume 3 base credits per request.

More Text & Language APIs

View category

Text & Language

Intent Detection

Detect user intent from natural language messages for routing, support, and workflow automation.

1 credit
Text & Language

Translation

Translate text between multiple languages using AI for high-quality contextual translations.

1 credit
Text & Language

Sentiment Analysis

Analyze the emotional tone of text to identify positive, negative, neutral, or mixed sentiments.

1 credit

AI Blog Post & Long-Form Article Generator API

What is the AI Blog Post & Long-Form Article Generator API?

Request parameters

Code examples

Response

Features

Structured Heading Outline (H2/H3)

Targeted SEO Keyword Integration

Tone & Audience Customization

Bullet Point & Key Takeaways

Use cases

Content Marketing Publishing Automation

SEO Agency Content Scaling

Knowledge Base & User Guide Generation

AI Blog Post & Long-Form Article Generator API vs building it yourself

Frequently asked questions

Start using the AI Blog Post & Long-Form Article Generator API

Sign in to continue

AI Blog Post & Long-Form Article Generator API

What is the AI Blog Post & Long-Form Article Generator API?

Structured Heading Outline (H2/H3)

Targeted SEO Keyword Integration

Tone & Audience Customization

Bullet Point & Key Takeaways

Content Marketing Publishing Automation

SEO Agency Content Scaling

Knowledge Base & User Guide Generation

Intent Detection

Translation

Sentiment Analysis

Start using the AI Blog Post & Long-Form Article Generator API