Payment gateways
ABA PayWay, Bakong KHQR, Wing, Stripe and PayPal, working in your app or site.
- ABA PayWay integration
- Bakong and KHQR
- Wing integration
Part of Payments & connections
Let partners, apps and websites work with your system
We design, build, document and secure APIs for mobile apps, websites, partners and internal systems — versioned, rate-limited and monitored, so what you publish keeps working.
Flexible payment on every project: a low entrance fee, then monthly payments that suit a growing business, delivered in phases. We agree the terms around your budget.
Gateways and channels we connect
- Cards and wallets worldwide
- Checkout and payouts
- Cards and KHQR in Cambodia
- Bakong QR payments and bank transfers
- Bots, notifications and enquiries
- Business messaging and bots
If your provider is not here, ask: most expose an API and we have connected many of them. Names and marks belong to their owners. We build with these tools; no partnership, endorsement or certification is implied.
Let other software work with yours
An API is a promise: send this, get that, every time. We build APIs that keep the promise — clear design, proper authentication, versioning that never breaks an existing client, and documentation a developer can use without ringing you.
We build APIs for the products we run and for clients whose apps are built elsewhere. You get an API specification agreed before code is written, a sandbox for your partners to test against, generated documentation, and monitoring that tells us about a problem before your customers do.
Why have it built by Baal
Designed before it is built
The specification is agreed in writing first, so your app team, your partners and we are building to the same contract.
Documentation people actually use
Reference docs, examples and a sandbox, so a partner developer can integrate without a meeting.
Secure and rate-limited
API keys, OAuth, per-client limits and audit logs, so you know who is calling what and can switch anyone off.
What we build
APIs for mobile and web apps
The backend interface your app and website call, built alongside or for another team's front end.
Partner and public APIs
APIs your customers, resellers and integrators can build against, with keys, quotas and documentation.
API documentation and sandboxes
OpenAPI specifications, reference docs, code samples and a test environment.
Authentication and security
API keys, OAuth 2.0, signed requests, permissions and rate limiting done properly.
Versioning and migration
New versions rolled out without breaking the clients on the old one.
Monitoring and support
Uptime, latency and error alerts, with fixes on a support plan.
Explore this division
Telegram & WhatsApp bots
Orders, bookings, alerts and support in the apps your customers already use.
- Telegram ordering bots
- Booking and appointment bots
- Notifications and alerts
Systems that talk to each other
Accounting, ERP, CRM, delivery, SMS, maps and marketplaces, connected.
- Accounting and ERP integration
- CRM and marketing platforms
- Delivery and logistics
Payments & connections
Take payment any way your customers pay, and make the software you already run talk to each other.
- Payment gateway integration
- Subscriptions, credits and top-ups
- API development and documentation
How we work
- 01
Talk
You tell us what you need, on WhatsApp, Telegram or the form, and you are talking to the team from the first message. We ask questions until we understand the problem properly — usually the same day.
- 02
Quote
We put the scope, the fee and the timescale in writing before any work begins, with payment terms that fit your budget: staged, monthly or spread over time. No surprises later.
- 03
Build
We build in stages and show you working software as it progresses, not only at the end.
- 04
Support
After release we stay on for updates, fixes and changes as the business moves. Ask for a change and it lands in days, not a ticket answered next week and scheduled for next quarter.
Ways to pay
Every job is quoted individually, in writing, before work starts, and how you pay is part of that conversation. You do not need the full fee upfront: tell us what suits your cash flow and we spread the cost over terms agreed with you. There are no prices on this website and nothing is bought here: you receive a quotation, and payment is by invoice or secure payment link.
Fixed-price project
A defined scope, a fixed fee and a timescale, all in writing before we start. You know exactly what you are getting and what it costs, and the fee can be spread over a payment schedule rather than paid upfront.
Best for: Websites, apps and systems with a clear brief.
Staged milestones
Larger builds are split into stages, each with its own scope and invoice. You see working software at every stage and pay as it lands.
Best for: Platforms, marketplaces and anything that takes months.
Monthly retainer
An agreed amount of development time each month for ongoing work: new features, changes, improvements. Flexible, and easy to plan around.
Best for: Products that keep evolving after launch.
Support plan
Hosting, monitoring, security updates, fixes and small changes on a monthly plan, with response times agreed in writing.
Best for: Anything live that needs looking after.
Frequently asked questions
REST or GraphQL?
REST for most business APIs, because it is simple and every developer knows it; GraphQL when clients need flexible queries over rich data. We recommend and explain the choice in the quote.
Can you document an API we already have?
Yes. We read the code, test the endpoints, write the specification and documentation, and flag anything that should change before you show it to partners.
Who owns the API?
You do, on full payment, as set out in our terms. Code, documentation and repositories are handed over.
Ready to build something?
Tell us what you need. WhatsApp and Telegram reach the team directly, we reply with questions, then a written quote — no obligation, nothing to buy here. Good work is priced properly, and paying for it is flexible: a low entrance fee, then monthly payments that suit a growing business.