Generate professional PDF invoices with customizable templates. Line items, tax, discounts, logos. Free tier available.
Welcome to the DevProToolkit API platform, your one-stop solution for generating professional invoices via REST API. Our Free Invoice Generator API allows you to create custom invoices with ease, saving you time and effort. In this article, we will explore the features and benefits of our API and provide a step-by-step guide on how to get started.
With our API, you can generate invoices in minutes, not hours. Our platform offers a range of features, including professional templates, automatic tax calculation, multiple currencies, custom branding, and line item support. Whether you are a freelancer, small business owner, or enterprise company, our API has got you covered.
An invoice generator API is a web service that allows you to generate invoices programmatically. Our API provides a simple and efficient way to create custom invoices, eliminating the need for manual data entry and reducing the risk of errors.
Automating invoice generation can save you time and effort, allowing you to focus on more important aspects of your business. With our API, you can generate invoices in minutes, not hours, and reduce the risk of errors and discrepancies.
To get started with our API, simply sign up at api.commandsector.in/signup and obtain an API key. Our API uses a simple REST API endpoint, making it easy to integrate with your existing applications and systems.
Our API endpoint is POST /api/invoice/generate, and it accepts a JSON request body with the following structure:
{
"seller": {
"name": "John Doe",
"address": "123 Main St",
"email": "john@example.com"
},
"buyer": {
"name": "Jane Doe",
"address": "456 Elm St",
"email": "jane@example.com"
},
"items": [
{
"name": "Item 1",
"quantity": 2,
"unit_price": 10.99
},
{
"name": "Item 2",
"quantity": 1,
"unit_price": 5.99
}
],
"invoice_number": "INV001",
"date": "2022-01-01",
"due_date": "2022-01-31",
"currency": "USD",
"tax_rate": 0.08,
"notes": "Thank you for your business",
"template": "modern"
}
We offer three professional templates to choose from: modern, classic, and minimal. Each template is customizable, allowing you to add your company logo and branding.
Here is an example of how to use our API with cURL:
curl -X POST \
https://api.commandsector.in/api/invoice/generate \
-H 'Content-Type: application/json' \
-H 'X-API-Key: YOUR_API_KEY' \
-d '{
"seller": {
"name": "John Doe",
"address": "123 Main St",
"email": "john@example.com"
},
"buyer": {
"name": "Jane Doe",
"address": "456 Elm St",
"email": "jane@example.com"
},
"items": [
{
"name": "Item 1",
"quantity": 2,
"unit_price": 10.99
},
{
"name": "Item 2",
"quantity": 1,
"unit_price": 5.99
}
],
"invoice_number": "INV001",
"date": "2022-01-01",
"due_date": "2022-01-31",
"currency": "USD",
"tax_rate": 0.08,
"notes": "Thank you for your business",
"template": "modern"
}'
Here is an example of how to use our API with Python:
import requests
api_key = "YOUR_API_KEY"
url = "https://api.commandsector.in/api/invoice/generate"
data = {
"seller": {
"name": "John Doe",
"address": "123 Main St",
"email": "john@example.com"
},
"buyer": {
"name": "Jane Doe",
"address": "456 Elm St",
"email": "jane@example.com"
},
"items": [
{
"name": "Item 1",
"quantity": 2,
"unit_price": 10.99
},
{
"name": "Item 2",
"quantity": 1,
"unit_price": 5.99
}
],
"invoice_number": "INV001",
"date": "2022-01-01",
"due_date": "2022-01-31",
"currency": "USD",
"tax_rate": 0.08,
"notes": "Thank you for your business",
"template": "modern"
}
headers = {
"Content-Type": "application/json",
"X-API-Key": api_key
}
response = requests.post(url, json=data, headers=headers)
if response.status_code == 200:
print("Invoice generated successfully!")
else:
print("Error:", response.text)
Here is an example of how to use our API with JavaScript / Node.js:
const axios = require("axios");
const api_key = "YOUR_API_KEY";
const url = "https://api.commandsector.in/api/invoice/generate";
const data = {
"seller": {
"name": "John Doe",
"address": "123 Main St",
"email": "john@example.com"
},
"buyer": {
"name": "Jane Doe",
"address": "456 Elm St",
"email": "jane@example.com"
},
"items": [
{
"name": "Item 1",
"quantity": 2,
"unit_price": 10.99
},
{
"name": "Item 2",
"quantity": 1,
"unit_price": 5.99
}
],
"invoice_number": "INV001",
"date": "2022-01-01",
"due_date": "2022-01-31",
"currency": "USD",
"tax_rate": 0.08,
"notes": "Thank you for your business",
"template": "modern"
};
const headers = {
"Content-Type": "application/json",
"X-API-Key": api_key
};
axios.post(url, data, { headers })
.then((response) => {
console.log("Invoice generated successfully!");
})
.catch((error) => {
console.log("Error:", error);
});
Our API can be used in a variety of scenarios, including:
| Use Case | Description |
|---|---|
| SaaS Billing | Generate invoices for your SaaS customers automatically. |
| Freelancing | Generate invoices for your freelance clients with ease. |
| E-commerce | Generate invoices for your e-commerce customers automatically. |
| Subscription Services | Generate invoices for your subscription-based services automatically. |
| Accounting | Generate invoices for your accounting clients with ease. |
The DevProToolkit API offers three distinct invoice templates, each tailored to cater to different needs and preferences. These templates are modern, classic, and minimal, providing a range of visual styles, colors, and layouts to suit various use cases.
The modern template features a sleek, contemporary design with bold typography and ample whitespace, making it ideal for tech startups and modern businesses. It includes a prominent display of the company logo and a clear breakdown of the invoice details.
In contrast, the classic template embodies a more traditional approach, with a focus on simplicity and clarity. It is suited for professional services firms, such as law or accounting practices, where a more conservative image is preferred.
The minimal template is the most straightforward of the three, with a focus on simplicity and ease of reading. It is recommended for small businesses or freelancers who want a clean and uncomplicated invoice design.
Choosing the right template depends on the specific needs and brand identity of your business. Consider the nature of your industry, your target audience, and the image you want to project when selecting a template.
The DevProToolkit API is designed to handle multiple currencies, including USD, EUR, GBP, and many others, making it a versatile solution for businesses operating globally. Automatic tax calculation is also supported, with configurable tax rates allowing for flexibility in managing different tax regimes.
Tax rates can be set as either tax-inclusive or tax-exclusive, depending on the requirements of your business and the jurisdictions in which you operate. This ensures compliance with local tax laws and simplifies the invoicing process.
{
"invoice": {
"currency": "USD",
"taxRates": [
{
"rate": 0.08,
"type": "salesTax"
},
{
"rate": 0.02,
"type": "vat"
}
]
}
}This example demonstrates how to configure multiple tax rates for an invoice, including both sales tax and VAT, each with its own rate.
Setting up recurring invoices can be efficiently managed using a Python cron script. This approach automates the process of generating invoices at regular intervals, such as monthly, saving time and reducing administrative workload.
import requests
import datetime
# Define the API endpoint and authentication details
api_endpoint = "https://api.commandsector.in/invoice-api"
api_key = "YOUR_API_KEY"
# Set the recurring invoice details
invoice_details = {
"client_name": "John Doe",
"client_email": "johndoe@example.com",
"invoice_date": datetime.date.today(),
"due_date": datetime.date.today() + datetime.timedelta(days=30),
"items": [
{
"description": "Service Fee",
"quantity": 1,
"unit_price": 100.00
}
]
}
# Schedule the cron job to run monthly
def generate_recurring_invoice():
response = requests.post(api_endpoint, json=invoice_details, headers={"Authorization": f"Bearer {api_key}"})
if response.status_code == 201:
print("Recurring invoice generated successfully.")
else:
print("Failed to generate recurring invoice.")
# Execute the function
generate_recurring_invoice()This Python script demonstrates how to create a recurring invoice using the DevProToolkit API. It defines the invoice details, including client information and invoice items, and then uses a cron job to automate the generation of the invoice on a monthly basis.
Combining invoice generation with payment links from gateways like Stripe or PayPal streamlines the payment process, making it easier for clients to pay their invoices. This integration can be achieved using Node.js, as shown in the following example.
const stripe = require("stripe")("YOUR_STRIPE_SECRET_KEY");
const invoiceApi = "https://api.commandsector.in/invoice-api";
// Create an invoice and attach a Stripe payment link
async function createInvoiceWithPaymentLink() {
const invoice = {
"client_name": "Jane Doe",
"client_email": "janedoe@example.com",
"invoice_date": new Date(),
"due_date": new Date() + 30 * 24 * 60 * 60 * 1000,
"items": [
{
"description": "Service Fee",
"quantity": 1,
"unit_price": 100.00
}
]
};
// Generate the invoice using the DevProToolkit API
const response = await fetch(invoiceApi, {
method: "POST",
headers: {
"Content-Type": "application/json",
"Authorization": "Bearer YOUR_API_KEY"
},
body: JSON.stringify(invoice)
});
const invoiceId = await response.json().id;
// Create a Stripe payment link
const paymentLink = await stripe.paymentLinks.create({
line_items: [
{
price_data: {
currency: "usd",
unit_amount: 10000,
product_data: {
name: "Service Fee"
}
},
quantity: 1
}
]
});
// Attach the Stripe payment link to the invoice
const updatedInvoice = await fetch(`${invoiceApi}/${invoiceId}`, {
method: "PATCH",
headers: {
"Content-Type": "application/json",
"Authorization": "Bearer YOUR_API_KEY"
},
body: JSON.stringify({ paymentLink: paymentLink.url })
});
return updatedInvoice;
}
createInvoiceWithPaymentLink();This Node.js example illustrates how to integrate the DevProToolkit API with Stripe to generate an invoice and attach a payment link. This streamlined process facilitates easy payment for clients and efficient management of invoices for businesses.
| API | Free Tier | Templates | Multi-Currency | Tax Calculation | Custom Branding | PDF Output |
|---|---|---|---|---|---|---|
| DevProToolkit API | Yes | 3 | Yes | Yes | Yes | Yes |
| Invoice Ninja API | Yes | 5 | Yes | Yes | Yes | Yes |
| Zoho Invoice API | Yes | 10 | Yes | Yes | Yes | Yes |
| FreshBooks API | No | 5 | Yes | Yes | Yes | Yes |
This comparison highlights the key features of the DevProToolkit API alongside other prominent invoice APIs, including Invoice Ninja, Zoho Invoice, and FreshBooks. Each API has its strengths, but the DevProToolkit API stands out for its comprehensive set of features, including multi-currency support, tax calculation, and custom branding, all available on its free tier.
We offer three pricing plans to suit your needs:
| Plan | Requests per Day | Price |
|---|---|---|
| Free | 100 | $0 |
| Pro | 10,000 | $9.99/mo |
| Enterprise | Unlimited | Contact Us |
We offer three professional templates: modern, classic, and minimal. Each template is customizable, allowing you to add your company logo and branding.
We support all major currencies, including USD, EUR, GBP, and more.
Our API calculates tax automatically based on the tax rate you provide. You can also specify a custom tax rate for each invoice.
Yes, you can customize the invoices with your company logo and branding. Our API allows you to add your company logo and branding to each invoice.
Yes, you can generate batch invoices using our API. Simply provide an array of invoices in the request body, and our API will generate each invoice separately.
Get your free API key and start making requests in minutes.
curl "http://147.224.212.116/api/..." \
-H "X-API-Key: YOUR_API_KEY"Get a free API key with 100 requests/day. No credit card required.
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