Payment Gateway & API
Powerful, developer-friendly payment gateway with RESTful API. Accept payments online, in-app, or anywhere with secure, flexible integration options.
What is a Payment Gateway?
A payment gateway is the technology that securely transmits payment information between your website or application and the payment processor . It encrypts sensitive data, authorizes transactions, and returns the result—all in milliseconds .
Customer Pays
Customer enters payment details on your website or app
Gateway Secures
Data is encrypted and sent to the payment processor
Transaction Complete
Approval or decline is returned instantly
Gateway Features
Everything you need to accept payments securely and efficiently
RESTful API
Modern REST API with predictable resource-oriented URLs, JSON responses, and comprehensive documentation.
- Easy integration in any language
- Detailed error handling
- SDKs for popular languages
Multiple Payment Methods
Accept all major credit cards, debit cards, ACH payments, and digital wallets.
- Visa, Mastercard, Amex, Discover
- Apple Pay & Google Pay
- ACH & eCheck processing
Tokenization & Security
Tokenizer embeds secure hosted fields (iFrame), keeping payment data off your servers and returning a token.
- Hosted iFrame payment fields.
- Tokenization replaces sensitive data with tokens.
- PCI-DSS Level 1 compliant.
- 256-bit SSL in transit.
- Reduced PCI scope.
Integrations
Connect Halo Payments to your website, apps, and business tools with flexible integration options.
- Woocommerce
- Magento
- Gravity Forms
Simple Payments (Pay Links)
Create a secure payment link in seconds—perfect for invoices, quotes, and collecting payments without building a full checkout.
- Share by email, text, or on a web page
- Great for remote/phone orders and service businesses
- Track status and reconcile payments easily
Fraud Protection
Built-in risk controls help reduce fraud and chargebacks while keeping checkout fast for real customers.
- Configurable rules and automated screening
- Block suspicious activity before it becomes a chargeback
- Protect approvals with smarter decisioning
Recurring Billing
Automate subscription payments with flexible billing cycles and smart retry logic.
- Daily, weekly, monthly billing
- Automatic retry for failed payments
- Subscription lifecycle management
Webhooks & Events
Real-time notifications for payment events sent directly to your server.
- Payment success/failure alerts
- Refund & chargeback notifications
- Subscription event updates
Advanced Reporting
Real-time transaction reports and analytics to track business performance.
- Detailed transaction history
- Custom date range reports
- Export to CSV/Excel
Transaction Operations
Complete payment lifecycle management with flexible transaction handling
Payment Operations
Authorize
Reserve funds on customer's card without capturing payment
Capture
Complete the payment and transfer funds (full or partial capture)
Sale (1-Stage)
Authorize and capture in a single transaction
Void/Reversal
Cancel an authorized transaction before settlement
Post-Payment Operations
Refund (Full or Partial)
Return funds to customer after settlement
Rebill
Process recurring payment using stored token
Credit/Payout
Send funds to a card without prior authorization
Transaction Lookup
Query order and operation details via API
API Request Example
{
"amount": 5000,
"currency": "USD",
"payment_method": {
"type": "card",
"number": "4242424242424242",
"exp_month": 12,
"exp_year": 2027,
"cvc": "123"
},
"description": "Order #12345",
"metadata": {
"order_id": "12345",
"customer_id": "cust_abc123"
}
}{
"id": "pay_9f8c7a123",
"status": "approved",
"amount": 5000,
"currency": "USD",
"authorization_code": "A12345",
"created_at": "2026-02-02T10:15:30Z",
"payment_method": {
"type": "card",
"brand": "Visa",
"last4": "4242"
}
}Integration Methods
Choose the integration approach that best fits your needs and technical requirements
Redirect customers to our secure, PCI-compliant payment page .
Best For:
- • Quick integration
- • Minimal PCI compliance (SAQ A)
- • Limited development resources
✓ Easiest to implement
✓ Lowest PCI burden
JavaScript / iFrame
Embed secure payment fields directly on your page with tokenization .
Best For:
- • Seamless user experience
- • Custom styling & branding
- • Reduced PCI scope (SAQ A-EP)
✓ No page redirect
✓ Great user experience
Direct API
Full control with server-to-server API integration .
Best For:
- • Complete customization
- • Complex payment flows
- • Advanced businesses
⚠ Full PCI compliance (SAQ D)
⚠ More development required
Integration Examples
Virtual Terminal
Process payments from anywhere with our cloud-based virtual terminal . Perfect for phone orders, mail orders, and manual transactions .
Process Anywhere
Access from any device with internet connection
Multi-User Access
Role-based permissions for team members
Customer Vault
Securely store customer payment methods
Invoicing & Receipts
Send invoices and receipts via email automatically
Enterprise-Grade Security
Your security and compliance are our top priorities
PCI-DSS Level 1
Highest level of payment security compliance
256-Bit SSL
Bank-level encryption for all data
Fraud Detection
AI-powered fraud prevention tools
3D Secure
Additional authentication layer for card payments
Ready to Integrate?
Start building with our payment gateway today. Test in sandbox mode for free, no credit card required.
Sandbox environment • Complete documentation • 24/7 developer support