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Smart Social Media Comment Reply Generator API

Social & Comments API

Smart Social Media Comment Reply Generator API

Social comment reply generation API with brand tone control, product context, and custom call-to-actions.

POST https://rsflowhub.com/api/v1/ai/comment-reply

2 credits per call
X-API-Key header
JSON in, JSON out

Try it in the playground API reference

POST /api/v1/ai/comment-reply

{
    "comment": "Do you ship to Mumbai? I would love to order this today!",
    "business_name": "ArtisanFootwear",
    "business_context": "We are an artisanal e-commerce shop delivering worldwide. Shipping is free within India.",
    "platform": "Instagram",
    "tone": "friendly",
    "instructions": "Include a call to action to visit the link in bio."
}

200 OK response.json

{
    "result": {
        "reply_text": "Thanks so much! It is available in our store right now, link in bio.",
        "language": "en",
        "tone": "friendly"
    }
}

Definition

What is the Smart Social Media Comment Reply Generator API?

Smart Social Media Comment Reply Generator API is a REST API on RSFlowHub for web, mobile and AI agent applications. Send a JSON request to POST /api/v1/ai/comment-reply 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.

Try it without code or signup: Free whatsapp business reply generator

Category: Social & Comments
Endpoint: POST /api/v1/ai/comment-reply
Authentication: X-API-Key header
Price: 2 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
`comment`	string	Required	The social media comment text (Max: 5,000 characters).
`business_name`	string	Optional	Optional business name to include in greeting or signature.
`business_context`	string	Optional	Optional business operational details context.
`post_context`	string	Optional	Optional post text context.
`product_context`	string	Optional	Optional product catalogs, details, or context.
`platform`	string	Optional	Optional social media platform name.
`tone`	string	Optional	Response tone. Options: "professional", "friendly", "casual", "empathetic", "concise". Default is "professional".
`language`	string	Optional	Optional response language.
`instructions`	string	Optional	Optional custom instructions to follow.

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/comment-reply" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: rfh_your_api_key" \
  -d '{"comment":"Do you ship to Mumbai? I would love to order this today!","business_name":"ArtisanFootwear","business_context":"We are an artisanal e-commerce shop delivering worldwide. Shipping is free within India.","platform":"Instagram","tone":"friendly","instructions":"Include a call to action to visit the link in bio."}'

client.php

<?php

$client = new \GuzzleHttp\Client();
$response = $client->post('https://rsflowhub.com/api/v1/ai/comment-reply', [
    'headers' => [
        'Content-Type' => 'application/json',
        'X-API-Key'    => 'rfh_your_api_key',
    ],
    'json' => array (
      'comment' => 'Do you ship to Mumbai? I would love to order this today!',
      'business_name' => 'ArtisanFootwear',
      'business_context' => 'We are an artisanal e-commerce shop delivering worldwide. Shipping is free within India.',
      'platform' => 'Instagram',
      'tone' => 'friendly',
      'instructions' => 'Include a call to action to visit the link in bio.',
    ),
]);

echo $response->getBody();

client.js

const response = await fetch('https://rsflowhub.com/api/v1/ai/comment-reply', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'X-API-Key': 'rfh_your_api_key'
  },
  body: JSON.stringify({"comment":"Do you ship to Mumbai? I would love to order this today!","business_name":"ArtisanFootwear","business_context":"We are an artisanal e-commerce shop delivering worldwide. Shipping is free within India.","platform":"Instagram","tone":"friendly","instructions":"Include a call to action to visit the link in bio."})
});

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

main.py

import requests

url = "https://rsflowhub.com/api/v1/ai/comment-reply"
headers = {
    "Content-Type": "application/json",
    "X-API-Key": "rfh_your_api_key"
}
payload = {"comment":"Do you ship to Mumbai? I would love to order this today!","business_name":"ArtisanFootwear","business_context":"We are an artisanal e-commerce shop delivering worldwide. Shipping is free within India.","platform":"Instagram","tone":"friendly","instructions":"Include a call to action to visit the link in bio."}

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": {
            "reply_text": "Thanks so much! It is available in our store right now, link in bio.",
            "language": "en",
            "tone": "friendly"
        }
    },
    "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": {
            "comment": [
                "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

Persona & Brand Voice Control

Select between friendly, professional, witty, empathetic, or casual brand voice personalities.

Post & Product Context Awareness

Grounds responses in specific product features, pricing, store location, and business policies.

Strategic Call-To-Action (CTA)

Automatically attaches custom conversion CTAs like "Check link in bio!", "DM us for a promo code!", or website links.

Multi-Language & Emoji Tuning

Generates native responses in 50+ languages with optional emoji frequency control.

Use cases

How teams use the Smart Social Media Comment Reply Generator API in production.

Social E-Commerce

Automated E-Commerce Instagram Inquiry Reply

Instantly generate friendly replies to buyer product questions on Instagram post comments with call-to-action to check link in bio.

Input: Do you ship to Mumbai? I would love to order this today!
Output: Yes! We offer free shipping across India including Mumbai. Check out the link in our bio to place your order today! 🚚✨

Drives social buyer traffic directly to online storefront.

Content Creator

YouTube Creator Community Engagement

Engage with video viewers by generating thoughtful, encouraging responses matching channel creator personality.

Input: Loved the explanation on line 42! Best tutorial on YouTube!
Output: Thanks so much! Glad line 42 helped clear things up. More tutorials coming next week! 🙌

Boosts YouTube comment section engagement and channel algorithm ranking.

Brand Support

Brand Account Support Directing

Politely direct dissatisfied social media commenters to customer support DMs or helpdesk email.

Input: My package is 4 days late and nobody is answering my emails!
Output: We are so sorry for the delay! Please send us a direct message with your order number so we can prioritize this for you immediately.

Moves public complaints to private resolution channels.

Smart Social Media Comment Reply 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	2 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

Can I control the tone and personality of generated replies?

Yes! You can specify writing tones such as friendly, professional, witty, or empathetic, and pass custom brand guidelines.

Does the API automatically avoid toxic or inappropriate comment replies?

Yes. Built-in safety filters prevent the API from generating offensive, sarcastic, or inappropriate responses to abusive comments.

How does the API handle product questions?

You can pass business_context (e.g. shipping policy, store hours, refund rules) so generated replies accurately reflect your business facts.

How fast is the Comment Reply Generator API?

Comment Reply 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.

How many credits does each request consume?

Standard Comment Reply Generator API calls consume 2 base credits per request.

Start using the Smart Social Media Comment Reply Generator API

Free plan with 100 credits/month + 1,000 bonus credits when you sign in before 23 Nov. Test it in the playground first, no code needed.

Get a free API key Try it now