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Automated Google & Amazon Review Reply Generator API

Reviews API

Automated Google & Amazon Review Reply Generator API

Automated review response generation API with brand tone control, resolution instructions, and support channel directing.

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

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

Try it in the playground API reference

POST /api/v1/ai/review-reply

{
    "review": "I bought this product yesterday and it broke within 2 hours. Extremely disappointed.",
    "rating": 1,
    "business_name": "TechGadgets Inc.",
    "customer_name": "Sarah Connor",
    "tone": "empathetic",
    "instructions": "Tell them support will reach out within 2 hours to ship a free replacement."
}

200 OK response.json

{
    "result": {
        "reply_text": "Thank you for the kind words about the build quality! We are sorry the battery is not lasting the day. Our support team will reach out with a fix today.",
        "language": "en",
        "tone": "friendly"
    }
}

Definition

What is the Automated Google & Amazon Review Reply Generator API?

Automated Google & Amazon Review 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/review-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 review reply generator

Category: Reviews
Endpoint: POST /api/v1/ai/review-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
`review`	string	Required	The raw customer review text (Max: 20,000 characters).
`rating`	integer	Optional	Optional review rating (1 to 5) to align response empathy.
`business_name`	string	Optional	Optional business name to include in signature.
`customer_name`	string	Optional	Optional customer name for greeting.
`tone`	string	Optional	Desired response tone. Allowed: "professional", "friendly", "empathetic", "concise". Default is "professional".
`language`	string	Optional	Optional draft response language.
`instructions`	string	Optional	Optional custom instructions (e.g. "Ask them to contact support at help@company.com").

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/review-reply" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: rfh_your_api_key" \
  -d '{"review":"I bought this product yesterday and it broke within 2 hours. Extremely disappointed.","rating":1,"business_name":"TechGadgets Inc.","customer_name":"Sarah Connor","tone":"empathetic","instructions":"Tell them support will reach out within 2 hours to ship a free replacement."}'

client.php

<?php

$client = new \GuzzleHttp\Client();
$response = $client->post('https://rsflowhub.com/api/v1/ai/review-reply', [
    'headers' => [
        'Content-Type' => 'application/json',
        'X-API-Key'    => 'rfh_your_api_key',
    ],
    'json' => array (
      'review' => 'I bought this product yesterday and it broke within 2 hours. Extremely disappointed.',
      'rating' => 1,
      'business_name' => 'TechGadgets Inc.',
      'customer_name' => 'Sarah Connor',
      'tone' => 'empathetic',
      'instructions' => 'Tell them support will reach out within 2 hours to ship a free replacement.',
    ),
]);

echo $response->getBody();

client.js

const response = await fetch('https://rsflowhub.com/api/v1/ai/review-reply', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'X-API-Key': 'rfh_your_api_key'
  },
  body: JSON.stringify({"review":"I bought this product yesterday and it broke within 2 hours. Extremely disappointed.","rating":1,"business_name":"TechGadgets Inc.","customer_name":"Sarah Connor","tone":"empathetic","instructions":"Tell them support will reach out within 2 hours to ship a free replacement."})
});

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

main.py

import requests

url = "https://rsflowhub.com/api/v1/ai/review-reply"
headers = {
    "Content-Type": "application/json",
    "X-API-Key": "rfh_your_api_key"
}
payload = {"review":"I bought this product yesterday and it broke within 2 hours. Extremely disappointed.","rating":1,"business_name":"TechGadgets Inc.","customer_name":"Sarah Connor","tone":"empathetic","instructions":"Tell them support will reach out within 2 hours to ship a free replacement."}

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": "Thank you for the kind words about the build quality! We are sorry the battery is not lasting the day. Our support team will reach out with a fix today.",
            "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": {
            "review": [
                "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

Star-Rating Adaptive Persona

Generates warm gratitude for 5-star praise and empathetic problem-solving for 1-star complaints.

Custom Business Resolution Rules

Grounds responses in specific store refund policies, support emails, or replacement claim links.

Personalization & Brand Sign-Offs

Formats official brand names, reviewer greetings, customer representative names, and management sign-offs.

Multi-Language Local SEO Control

Generates culturally natural responses in 50+ languages optimized for Google Maps local business SEO.

Use cases

How teams use the Automated Google & Amazon Review Reply Generator API in production.

Local SEO & Restaurants

Local Business Google Maps Review Management

Auto-generate public management responses for Google Business local reviews to boost local SEO visibility.

Input: I bought this product yesterday and it broke within 2 hours. Extremely disappointed.
Output: Dear Sarah,\n\nWe are extremely sorry to hear about your experience with TechGadgets Inc. Support will reach out within 2 hours to ship a free replacement.\n\nSincerely,\nManagement

Improves local search ranking and customer trust.

Amazon Marketplace

Amazon Seller Feedback Resolution

Respond to negative buyer reviews on Amazon with polite customer service contact details to resolve complaints.

Input: Shipping took 2 weeks longer than promised.
Output: Hello,\n\nWe sincerely apologize for the shipping delay. Please DM us your order ID so we can issue a partial shipping refund.

Protects Amazon seller rating and account health.

B2B SaaS Marketing

SaaS Product Review Engagement on G2 & Capterra

Engage with software reviewers on G2, Capterra, and Trustpilot to show active customer support.

Input: Love the software! Saved our team 5 hours every week.
Output: Thank you for the awesome 5-star review! We are thrilled RSFlowHub is saving your team 5 hours every week!🚀

Demonstrates strong customer commitment to prospective SaaS buyers.

Automated Google & Amazon Review 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

How does the API adapt replies based on star ratings?

For 4-5 star reviews, the API generates warm gratitude and brand appreciation. For 1-3 star reviews, it adopts an empathetic, problem-solving tone.

Can I specify custom support contact details in generated replies?

Yes! Passing instructions (e.g. "Direct customer to support@domain.com") ensures custom contact channels are included.

Does the API help improve local SEO rankings on Google Maps?

Yes! Regularly responding to Google Business reviews with relevant keywords signals active engagement to Google local search algorithms.

How fast is the Review Reply Generator API?

Review 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 Review Reply Generator API calls consume 2 base credits per request.

Start using the Automated Google & Amazon Review 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