Query String Builder API
Query String Builder converts JSON objects into properly formatted URL query strings with optional encoding.
The Query String Builder API provides reliable and fast access to query string builder data through a simple REST interface. Built for developers who need consistent, high-quality results with minimal setup time.
To use Query String Builder, you need an API key. You can get one by creating a free account and visiting your dashboard.
POST Endpoint
https://api.apiverve.com/v1/querystringbuilderCode Examples
Here are examples of how to call the Query String Builder API in different programming languages:
curl -X POST \
"https://api.apiverve.com/v1/querystringbuilder" \
-H "X-API-Key: your_api_key_here" \
-H "Content-Type: application/json" \
-d '{
"params": {
"name": "John Doe",
"age": 30,
"city": "New York",
"interests": [
"coding",
"music",
"travel"
]
},
"encode": true
}'const response = await fetch('https://api.apiverve.com/v1/querystringbuilder', {
method: 'POST',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
},
body: JSON.stringify({
"params": {
"name": "John Doe",
"age": 30,
"city": "New York",
"interests": [
"coding",
"music",
"travel"
]
},
"encode": true
})
});
const data = await response.json();
console.log(data);import requests
headers = {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
payload = {
"params": {
"name": "John Doe",
"age": 30,
"city": "New York",
"interests": [
"coding",
"music",
"travel"
]
},
"encode": true
}
response = requests.post('https://api.apiverve.com/v1/querystringbuilder', headers=headers, json=payload)
data = response.json()
print(data)const https = require('https');
const url = require('url');
const options = {
method: 'POST',
headers: {
'X-API-Key': 'your_api_key_here',
'Content-Type': 'application/json'
}
};
const postData = JSON.stringify({
"params": {
"name": "John Doe",
"age": 30,
"city": "New York",
"interests": [
"coding",
"music",
"travel"
]
},
"encode": true
});
const req = https.request('https://api.apiverve.com/v1/querystringbuilder', options, (res) => {
let data = '';
res.on('data', (chunk) => data += chunk);
res.on('end', () => console.log(JSON.parse(data)));
});
req.write(postData);
req.end();<?php
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, 'https://api.apiverve.com/v1/querystringbuilder');
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
'X-API-Key: your_api_key_here',
'Content-Type: application/json'
]);
curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode({
'params': {
'name': 'John Doe',
'age': 30,
'city': 'New York',
'interests': [
'coding',
'music',
'travel'
]
},
'encode': true
}));
$response = curl_exec($ch);
curl_close($ch);
$data = json_decode($response, true);
print_r($data);
?>package main
import (
"fmt"
"io"
"net/http"
"bytes"
"encoding/json"
)
func main() {
payload := map[string]interface{}{
"params": "[object Object]",
"encode": "true"
}
jsonPayload, _ := json.Marshal(payload)
req, _ := http.NewRequest("POST", "https://api.apiverve.com/v1/querystringbuilder", bytes.NewBuffer(jsonPayload))
req.Header.Set("X-API-Key", "your_api_key_here")
req.Header.Set("Content-Type", "application/json")
client := &http.Client{}
resp, err := client.Do(req)
if err != nil {
panic(err)
}
defer resp.Body.Close()
body, _ := io.ReadAll(resp.Body)
fmt.Println(string(body))
}require 'net/http'
require 'json'
uri = URI('https://api.apiverve.com/v1/querystringbuilder')
http = Net::HTTP.new(uri.host, uri.port)
http.use_ssl = true
payload = {
"params": {
"name": "John Doe",
"age": 30,
"city": "New York",
"interests": [
"coding",
"music",
"travel"
]
},
"encode": true
}
request = Net::HTTP::Post.new(uri)
request['X-API-Key'] = 'your_api_key_here'
request['Content-Type'] = 'application/json'
request.body = payload.to_json
response = http.request(request)
puts JSON.pretty_generate(JSON.parse(response.body))using System;
using System.Net.Http;
using System.Text;
using System.Threading.Tasks;
class Program
{
static async Task Main(string[] args)
{
using var client = new HttpClient();
client.DefaultRequestHeaders.Add("X-API-Key", "your_api_key_here");
var jsonContent = @"{
""params"": {
""name"": ""John Doe"",
""age"": 30,
""city"": ""New York"",
""interests"": [
""coding"",
""music"",
""travel""
]
},
""encode"": true
}";
var content = new StringContent(jsonContent, Encoding.UTF8, "application/json");
var response = await client.PostAsync("https://api.apiverve.com/v1/querystringbuilder", content);
response.EnsureSuccessStatusCode();
var responseBody = await response.Content.ReadAsStringAsync();
Console.WriteLine(responseBody);
}
}Authentication
The Query String Builder API requires authentication via API key. Include your API key in the request header:
X-API-Key: your_api_key_hereInteractive API Playground
Test the Query String Builder API directly in your browser with live requests and responses.
Parameters
The following parameters are available for the Query String Builder API:
Build Query String
| Parameter | Type | Required | Description | Default | Example |
|---|---|---|---|---|---|
params | object | required | JSON object of parameters | - | |
encode | boolean | optional | URL encode parameter values Format: url (e.g., ) |
Response
The Query String Builder API returns responses in JSON, XML, YAML, and CSV formats:
Example Responses
{
"status": "ok",
"error": null,
"data": {
"queryString": "name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel",
"fullURL": "?name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel",
"encoded": true,
"paramCount": 4
}
}<?xml version="1.0" encoding="UTF-8"?>
<response>
<status>ok</status>
<error xsi:nil="true" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"/>
<data>
<queryString>name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel</queryString>
<fullURL>?name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel</fullURL>
<encoded>true</encoded>
<paramCount>4</paramCount>
</data>
</response>
status: ok
error: null
data:
queryString: >-
name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel
fullURL: >-
?name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel
encoded: true
paramCount: 4
| key | value |
|---|---|
| queryString | name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel |
| fullURL | ?name=John%20Doe&age=30&city=New%20York&interests=coding&interests=music&interests=travel |
| encoded | true |
| paramCount | 4 |
Response Structure
All API responses follow a consistent structure with the following fields:
| Field | Type | Description | Example |
|---|---|---|---|
status | string | Indicates whether the request was successful ("ok") or failed ("error") | ok |
error | string | null | Contains error message if status is "error", otherwise null | null |
data | object | null | Contains the API response data if successful, otherwise null | {...} |
Learn more about response formats →
Response Data Fields
When the request is successful, the data object contains the following fields:
| Field | Type | Sample Value | Description |
|---|---|---|---|
queryString | string | Formatted query string with encoded parameter key-value pairs | |
fullURL | string | Complete query string with leading question mark for URLs | |
encoded | boolean | Indicates whether URL encoding was applied to parameters | |
paramCount | number | Total count of unique parameters in the query string |
Headers
Required and optional headers for Query String Builder API requests:
| Header Name | Required | Example Value | Description |
|---|---|---|---|
X-API-Key | required | your_api_key_here | Your APIVerve API key. Found in your dashboard under API Keys. |
Accept | optional | application/json | Specify response format: application/json (default), application/xml, or application/yaml |
User-Agent | optional | MyApp/1.0 | Identifies your application for analytics and debugging purposes |
X-Request-ID | optional | req_123456789 | Custom request identifier for tracking and debugging requests |
Cache-Control | optional | no-cache | Control caching behavior for the request and response |
GraphQL AccessALPHA
Access Query String Builder through GraphQL to combine it with other API calls in a single request. Query only the query string builder data you need with precise field selection, and orchestrate complex data fetching workflows.
Credit Cost: Each API called in your GraphQL query consumes its standard credit cost.
POST https://api.apiverve.com/v1/graphqlquery {
querystringbuilder(
input: {
params: {"name":"John Doe","age":30,"city":"New York","interests":["coding","music","travel"]}
encode: true
}
) {
queryString
fullURL
encoded
paramCount
}
}Note: Authentication is handled via the x-api-key header in your GraphQL request, not as a query parameter.
CORS Support
The Query String Builder API supports Cross-Origin Resource Sharing (CORS) with wildcard configuration, allowing you to call Query String Builder directly from browser-based applications without proxy servers.
| CORS Header | Value | Description |
|---|---|---|
Access-Control-Allow-Origin | * | Accepts requests from any origin |
Access-Control-Allow-Methods | * | Accepts any HTTP method |
Access-Control-Allow-Headers | * | Accepts any request headers |
Browser Usage: You can call Query String Builder directly from JavaScript running in the browser without encountering CORS errors. No proxy server or additional configuration needed.
Rate Limiting
Query String Builder API requests are subject to rate limiting based on your subscription plan. These limits ensure fair usage and maintain service quality for all Query String Builder users.
| Plan | Rate Limit | Description |
|---|---|---|
| Free | 5 requests/min | Hard rate limit enforced - exceeding will return 429 errors |
| Starter | No Limit | Production ready - standard traffic priority |
| Pro | No Limit | Production ready - preferred traffic priority |
| Mega | No Limit | Production ready - highest traffic priority |
Learn more about rate limiting →
Rate Limit Headers
When rate limits apply, each Query String Builder response includes headers to help you track your usage:
| Header | Description |
|---|---|
X-RateLimit-Limit | Maximum number of requests allowed per time window |
X-RateLimit-Remaining | Number of requests remaining in the current window |
X-RateLimit-Reset | Unix timestamp when the rate limit window resets |
Handling Rate Limits
Free Plan: When you exceed your rate limit, Query String Builder returns a 429 Too Many Requests status code. Your application should implement appropriate backoff logic to handle this gracefully.
Paid Plans: No rate limiting or throttling applied. All paid plans (Starter, Pro, Mega) are production-ready.
Best Practices for Query String Builder:
- Monitor the rate limit headers to track your Query String Builder usage (Free plan only)
- Cache query string builder responses where appropriate to reduce API calls
- Upgrade to Pro or Mega for guaranteed no-throttle Query String Builder performance
Note: Query String Builder rate limits are separate from credit consumption. You may have credits remaining but still hit rate limits when using Query String Builder on Free tier.
Error Codes
The Query String Builder API uses standard HTTP status codes to indicate success or failure:
| Code | Message | Description | Solution |
|---|---|---|---|
200 | OK | Request successful, data returned | No action needed - request was successful |
400 | Bad Request | Invalid request parameters or malformed request | Check required parameters and ensure values match expected formats |
401 | Unauthorized | Missing or invalid API key | Include x-api-key header with valid API key from dashboard |
403 | Forbidden | API key lacks permission or insufficient credits | Check credit balance in dashboard or upgrade plan |
429 | Too Many Requests | Rate limit exceeded (Free: 5 req/min) | Implement request throttling or upgrade to paid plan |
500 | Internal Server Error | Server error occurred | Retry request after a few seconds, contact support if persists |
503 | Service Unavailable | API temporarily unavailable | Wait and retry, check status page for maintenance updates |
Learn more about error handling →
Need help? Contact support with your X-Request-ID for assistance.
Integrate Query String Builder with SDKs
Get started quickly with official Query String Builder SDKs for your preferred language. Each library handles authentication, request formatting, and error handling automatically.
Available for Node.js, Python, C#/.NET, and Android/Java. All SDKs are open source and regularly updated.
Integrate Query String Builder with No-Code API Tools
Connect the Query String Builder API to your favorite automation platform without writing code. Build workflows that leverage query string builder data across thousands of apps.





All platforms use your same API key to access Query String Builder. Visit our integrations hub for step-by-step setup guides.
Frequently Asked Questions
How do I get an API key for Query String Builder?
How many credits does Query String Builder cost?
Each successful Query String Builder API call consumes credits based on plan tier. Check the pricing section above for the exact credit cost. Failed requests and errors don't consume credits, so you only pay for successful query string builder lookups.
Can I use Query String Builder in production?
The free plan is for testing and development only. For production use of Query String Builder, upgrade to a paid plan (Starter, Pro, or Mega) which includes commercial use rights, no attribution requirements, and guaranteed uptime SLAs. All paid plans are production-ready.
Can I use Query String Builder from a browser?
What happens if I exceed my Query String Builder credit limit?
When you reach your monthly credit limit, Query String Builder API requests will return an error until you upgrade your plan or wait for the next billing cycle. You'll receive notifications at 80% and 95% usage to give you time to upgrade if needed.



