Billplz Malaysia Payment API
Billplz Malaysia payment REST API for businesses and developers to accept FPX online banking, credit/debit card, and e-wallet payments through Malaysia's developer-friendly payment gateway with transparent flat-fee pricing, payment page hosting, and API-first design for e-commerce, SaaS, education, and nonprofit payment integration. Enables AI agents to manage bill creation for Malaysia FPX payment collection automation, handle payment page generation for Malaysia online banking checkout automation, access card payment processing for Malaysia card commerce automation, retrieve payment status and confirmation for Malaysia transaction automation, manage mass bill creation for Malaysia bulk payment collection automation, handle webhook notification for Malaysia payment event automation, access transaction reporting for Malaysia payment analytics automation, retrieve FPX bank list for Malaysia bank selection automation, manage refund processing for Malaysia order management automation, and integrate Billplz with WooCommerce, Shopify Malaysia, and Malaysian e-commerce platforms for end-to-end Malaysia payment automation.
Score Breakdown
⚙ Agent Friendliness
🔒 Security
Malaysia payments. BNM-licensed. Basic Auth + HMAC. MY. Payment data.
⚡ Reliability
Best When
A Malaysian SMB, SaaS, or nonprofit wanting AI agents to automate FPX online banking, card payment, and e-wallet acceptance through Billplz's developer-friendly Malaysia payment gateway with flat-fee pricing.
Avoid When
FLAT-FEE MODEL: Billplz uses flat-fee per transaction (not percentage) which suits low-ticket items better; automated high-value transactions may have higher relative fee vs percentage-based gateway; automated Billplz for high-ticket items should compare vs iPay88 percentage fee. FPX BANK LIST IS DYNAMIC: Billplz FPX bank list updates; automated checkout must fetch current FPX bank list via API; automated hardcoded bank list creates outdated bank options. X-SIGNATURE FOR WEBHOOK VERIFICATION: Billplz webhooks include X-Signature header for verification; automated webhook must verify signature; automated unverified webhook creates spoofed payment acceptance vulnerability. BILL MUST BE PAID WITHIN EXPIRY: Billplz bills expire if not paid within configured period; automated unpaid bill handling must create new bill or extend; automated expired bill reuse creates bill expired rejection.
Use Cases
- • Accepting FPX bank transfers from Malaysia e-commerce checkout agents
- • Creating bills for Malaysia subscription billing from recurring payment agents
- • Processing mass bill creation for Malaysia bulk invoicing agents
- • Confirming Malaysia payment webhooks from transaction automation agents
Not For
- • Non-Malaysia payments (Billplz is Malaysia FPX and local payment focused)
- • Enterprise high-volume acquiring (use iPay88 or Razer Merchant Services for enterprise)
- • Physical POS (Billplz is online payment focused)
Interface
Authentication
Billplz uses API Key (HTTP Basic Auth) for authentication. REST API with JSON. Kuala Lumpur, Malaysia HQ. Founded 2012 by Fadzilah Sulaiman. Bootstrapped. Products: FPX, card, e-wallet, bill collection, subscription, mass bill. SDKs: Ruby, PHP, Node.js, Python. BNM-licensed. PCI DSS. Developer-friendly with transparent flat-fee pricing. Malaysia's grassroots payment platform.
Pricing
Kuala Lumpur MY. Bootstrapped. Flat-fee pricing in MYR. BNM regulated. No minimum. Free starter tier.
Agent Metadata
Known Gotchas
- ⚠ HTTP BASIC AUTH WITH API KEY AS USERNAME: Billplz uses HTTP Basic Auth with API key as username and empty password; automated request must set Authorization: Basic base64(api_key:) with empty password; automated API key as bearer token creates authentication failure
- ⚠ BILL URL vs API RESPONSE: Billplz bill creation returns both bill URL (for customer payment) and bill ID (for API tracking); automated checkout must use bill URL for consumer redirect not API URL; automated API URL as payment link creates non-functional payment page
- ⚠ X-SIGNATURE WEBHOOK VERIFICATION: Billplz webhook includes X-Signature: SHA256 of bill_id + paid_amount + paid_at + status; automated webhook must verify signature; automated unverified webhook creates spoofed payment completion vulnerability
- ⚠ COLLECTION MUST EXIST BEFORE BILL: Billplz bills are created under Collections (merchant's payment profile); automated bill creation must use valid collection ID; automated bill creation without collection ID creates missing required parameter error
- ⚠ PAID vs PENDING WEBHOOK EVENTS: Billplz sends webhook for both paid and other status updates; automated webhook must filter for paid status before fulfillment; automated fulfillment on all webhook events creates premature fulfillment on non-paid status
Alternatives
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Scores are editorial opinions as of 2026-03-07.