FAQ & Knowledge Base API Endpoint Global Gateway

Automated Question-Answering FAQ Matcher API
For Production Apps

Semantic FAQ matching API retrieving instant high-confidence answers from custom Q&A databases.

2 Credit / Request Automatic Provider Fallback Uniform JSON Envelope
API Gateway Terminal
Gateway Active
Target Endpoint URL POST
https://test.rsflowhub.com/api/v1/ai/faq-match
Typical Time 1-3 s
Auth Gate X-API-Key
Credit Cost 2 Credit
Response JSON
Generative AI & Developer Definition Production Ready API

What is Automated Question-Answering FAQ Matcher API?

Automated Question-Answering FAQ Matcher API is a ready-to-use REST API on RSFlowHub for developers building web, mobile and AI agent applications. Send a JSON request to POST /api/v1/ai/faq-match with your API key; RSFlowHub runs it on a tuned AI model (with automatic fallback to a backup provider) and returns a structured JSON result, usually within 1 to 3 seconds.

Auth: X-API-Key Header
Rate Limit: 10-120 req/min by plan
Credits: 2 per call
AI Search Quick Reference
Category: FAQ & Knowledge Base
Typical response: 1-3 s
Format: REST / JSON UTF-8

Code Examples

Copy-paste ready code in your preferred stack
curl-integration.sh
curl -X POST "https://test.rsflowhub.com/api/v1/ai/faq-match" \
  -H "Content-Type: application/json" \
  -H "X-API-Key: rfh_your_api_key" \
  -d '{"collection_id":1,"query":"how to update passcode?","min_confidence":0.4,"top_n":1}'
<?php

$client = new \GuzzleHttp\Client();
$response = $client->post('https://test.rsflowhub.com/api/v1/ai/faq-match', [
    'headers' => [
        'Content-Type' => 'application/json',
        'X-API-Key'    => 'rfh_your_api_key',
    ],
    'json' => array (
      'collection_id' => 1,
      'query' => 'how to update passcode?',
      'min_confidence' => 0.4,
      'top_n' => 1,
    ),
]);

echo $response->getBody();
const response = await fetch('https://test.rsflowhub.com/api/v1/ai/faq-match', {
  method: 'POST',
  headers: {
    'Content-Type': 'application/json',
    'X-API-Key': 'rfh_your_api_key'
  },
  body: JSON.stringify({"collection_id":1,"query":"how to update passcode?","min_confidence":0.4,"top_n":1})
});

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

url = "https://test.rsflowhub.com/api/v1/ai/faq-match"
headers = {
    "Content-Type": "application/json",
    "X-API-Key": "rfh_your_api_key"
}
payload = {"collection_id":1,"query":"how to update passcode?","min_confidence":0.4,"top_n":1}

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

Core Architectural Features

Semantic Vector Similarity

Understands user question intent and phrasing variations rather than relying on exact keyword matches.

Confidence Score Thresholding

Outputs numeric confidence scores (0.0 to 1.0) with configurable minimum thresholds for automated deflection.

Multi-Match Top-N Ranking

Returns top N ranked candidate FAQ answers with matching probability percentages.

Fallback Suggestion Engine

Provides alternative related question suggestions when match confidence falls below threshold.

Practical Applications

Real-World Industry Use Cases

See how developers integrate this API endpoint into production apps.

E-Commerce & SaaS

Instant Website Support Chatbot

Answer repetitive customer pre-purchase questions instantly 24/7 without human agent intervention.

Before: What is your refund policy for unused credits?
After: {"match_found": true, "question": "What is the refund policy?", "answer": "Unused credits are refundable within 14 days of purchase.", "confidence": 0.96}
Answers common buyer questions on your website instantly, day and night.
Mobile App Development

Mobile App In-App Help Center Search

Power real-time in-app FAQ search bars with instant answer previews as users type their questions.

Before: How to cancel subscription?
After: {"top_matches": [{"question": "How do I cancel my subscription?", "confidence": 0.98}]}
Delivers instant help without forcing users to leave the app.
Customer Support

Helpdesk Ticket Deflection Form

Display suggested FAQ answers dynamically while customers type their support ticket description.

Before: I cannot find my invoice PDF for last month.
After: {"suggested_faq": "Where can I download my billing invoices?", "confidence": 0.94}
Suggests answers before a ticket is submitted, reducing repeat questions.
Technical Comparison

Why Developers Choose Automated Question-Answering FAQ Matcher API

Comparing RSFlowHub's specialized API gateway vs raw multi-turn LLM prompts vs legacy regex rules.

Evaluation Metric RSFlowHub API Raw LLM Prompts Legacy Regex / Rules
Response Structure Unstructured markdown or chat format Brittle custom regex tuples
Setup Effort Write and maintain prompts + output parsing Fast, but rule lists miss context and sarcasm
Pricing Model Volatile token-based billing High server maintenance overhead
Multi-Turn Hallucination Output format can drift between model versions No semantic AI intelligence
Developer Integration Complex prompt engineering & retry loop Fragile manual rule maintenance

Request Parameters

4 Fields
question string
Required

Raw user question or inquiry text to match against FAQ database.

faq_items array
Required

Array of FAQ items containing question and answer pairs.

top_k integer
Optional

Number of top ranked matches to return (Default: 3).

min_confidence float
Optional

Minimum confidence threshold score between 0.0 and 1.0 (Default: 0.70).

JSON Response Envelope

Uniform API

Every endpoint returns the same envelope: success, request_id, data.result and meta.

response.json JSON
200 OK
{
    "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"
    }
}
Format JSON
Charset UTF-8
Fallback Automatic
Rate Limit 120/min max
FAQs

Frequently Asked Questions

Everything you need to know about integrating and using Automated Question-Answering FAQ Matcher API.

Semantic matching evaluates sentence meaning, intent, and synonyms so "How do I pay?" matches "Which payment methods are accepted?".

The API returns match_found=false alongside related fallback questions so your UI can gracefully direct users to human support.

FAQ Matcher 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.

Yes! You can pass custom faq_items arrays on each request to match against dynamic or user-specific FAQ lists.

Standard FAQ Matcher API calls consume 2 base credits per request.
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