Service · APIs & Integrations
API Development & Integration for Small Businesses
Connect your website to the tools you already use — or build a clean API so your app, partner, or team can talk to your data.
The problem with disconnected tools
- Your website, CRM, payment processor, and scheduling tool all have data that belongs together — but nothing talks to anything else.
- Manual data entry between systems is costing your team hours every week and introducing errors that compound over time.
- Off-the-shelf Zapier automations cover the simple cases — anything with conditional logic, bulk processing, or custom data shapes requires actual code.
What's included
- Custom REST API endpoints that return exactly the data shape your app or partner needs.
- Webhook receivers for payment events, form submissions, and third-party service notifications.
- Third-party API integrations: Stripe, Twilio, Mailchimp, Google Sheets, QuickBooks, and more.
- Authentication with API keys or OAuth 2.0 depending on the use case.
- Rate limiting, request logging, and error handling built in.
- Complete API documentation delivered with the codebase.
How it works
1
Spec
Map the data flow, define endpoints, and document the auth model before a line is written.
2
Build
PHP with a test suite for each endpoint — no blind faith that it works.
3
Integration testing
Real data, real credentials, edge cases exercised before delivery.
4
Handoff
API documentation, Postman collection, and keys rotated on delivery.
Frequently asked questions
What's the difference between an API and a webhook?
An API is something your code calls — you make a request, you get a response. A webhook is something that calls you — an external service sends an HTTP request to your server when an event happens (a payment succeeds, a form is submitted, an appointment is booked). Most integration work involves both: your app calls the payment API to charge a card, and the payment processor sends a webhook to confirm the charge succeeded.
Can you integrate with [specific tool]?
Most tools that matter have a documented REST API — Stripe, Mailchimp, QuickBooks, Google Workspace, HubSpot, Twilio, SendGrid, Calendly, Acuity, and dozens more. If the tool has an API with an auth mechanism, integration is in scope. If it doesn't have an API, there's usually a third-party connector (Zapier, Make) or an IMAP/SMTP approach for email-based workflows.
Do you build the front-end too, or just the API?
Either. Some clients need only the back-end API and will connect their own front-end. Others need the full stack — PHP back-end, public-facing site, and admin interface. The API work is scoped and priced independently and can be added to a website project.
How is API work priced?
Integrations with well-documented third-party APIs (Stripe, Mailchimp, etc.) are typically fixed-price: $500–$1,500 per integration depending on complexity. Custom REST API development is quoted per endpoint count and data complexity, generally starting at $2,000 for a small set of authenticated endpoints.
Need a custom API or integration built?
Tell me what you're connecting and what it needs to do — I'll map out the endpoints and give you a fixed-scope quote.
Get a quote