Building APIs and Integrations
REST and GraphQL APIs plus the integrations your product depends on, documented, versioned and secure.
- Written scope and price before any work begins
- An experienced lead does the work you are paying for
- Reporting that tracks leads and sales as well as rankings

Logos from sectors our work covers
What is API Development & Integrations?
REST and GraphQL APIs plus the integrations your product depends on, documented, versioned and secure.
- Discipline: SaaS Architecture
- Working term: Predictable easy for developers
- Formats: ongoing monthly work or a single audit
- Who you talk to: the senior lead, on every weekly call
The service
Our approach to
API Development & Integrations
We build APIs that developers find pleasant to use, with typed contracts, sensible paging and errors, authentication and rate limits, webhooks and idempotent writes. Third-party connections such as Stripe, CRMs and data providers come with retries and monitoring, so failures are noticed straight away.
Questions before you commit?
Book a free call →REST and GraphQL contracts
Authentication and rate limits
Webhooks and idempotent writes
Versioning and documentation
Stripe, CRM and other integrations
Common blockers
Where this kind of work usually gets stuck
Problems that show up again and again when we first look at an account. Our plan is built to deal with each one.
An API developers dread using
Inconsistent endpoints and thin docs frustrate partners. We design clear, documented APIs.
Integrations that keep failing
Fragile connections drop data and are hard to debug. We build them to recover from errors.
Gaps in API security
An unprotected API invites abuse. We add authentication, rate limits and validation.
Changes that break other people’s code
Unplanned changes anger the developers who rely on you. We version properly.

What you can check
What is true from the first week
SaaS Architecture services you can book
Lead named on your account
Clients served from Mississauga, ON
Included
Inside a API Development & Integrations engagement
The core work
Authentication and rate limits
Webhooks and idempotent writes
Also covered
Versioning and documentation
Stripe, CRM and other integrations

How we keep the work accountable
Before work starts, we agree on the number that matters most to you. Each sprint is planned against it. You get a short recorded update every week and a dashboard you can open any time, and the senior lead joins every call.
- A senior lead runs your account from day one
- A recorded walkthrough each week and a shared reporting dashboard
- We work inside the tools and CMS your team already uses
- Target ranges written into the agreement before we begin
Our Process
Four stages of API Development & Integrations
The same order every time: find the constraint, plan, deliver, then review. Here is what each stage involves.
Agree the contract
REST or GraphQL endpoints get predictable resources, readable error messages and documentation people can follow.
Make integrations recover
Retries, idempotent writes, webhooks and reconciliation jobs keep data in sync when a third party has a bad day.
Lock it down
Authentication, rate limits and strict input checks make the API safe to open to partners.
Version with care
A clear versioning and deprecation plan lets the API change without breaking the apps that rely on it.
An API developers enjoy working with
Your API has its own users, the developers and partners who build on it. We design consistent REST or GraphQL APIs with sensible resources, predictable behaviour, helpful error messages and documentation people can actually follow, including example requests and a sandbox when it helps. Good design is what makes others choose to build on your platform.
- Consistent REST or GraphQL design
- Predictable resources and behaviour
- Helpful errors and clear documentation
- A good experience for developers

Connections that keep data flowing
Links between systems are where data quietly goes missing. We build integrations with error handling, retries, idempotent operations, webhooks and reconciliation jobs, so information moves reliably between your platform and services like payment processors, accounting software, CRMs and carriers. When something fails, it fails visibly and recovers. That turns integrations from a constant headache into dependable plumbing.
- Reliable third-party and internal integrations
- Error handling, retries and idempotency
- Webhooks and reconciliation
- Data flow that is easy to trace

Safe to open up and stable to rely on
An API is both an entry point attackers probe and a promise to the people who use it. We add authentication, authorization, rate limiting and input validation to protect it, and a clear versioning and deprecation plan so it can change without breaking anyone. That discipline lets you open your API to partners and keep improving it.
- Authentication, rate limits and validation
- Established API security practices
- Versioning and deprecation plans
- Safe to expose and stable to depend on
Our working terms
What a API Development & Integrations engagement includes
These describe how we staff, report on and scope the work. They hold from the first week, before any result exists to point at.
- A named senior specialist leads each account
- Progress shown in live Looker Studio dashboards
- Measured on leads and revenue
FAQs
Before you sign: common questions
Straight answers on scope, timing and how we report.
What makes an API good?
How do you stop integrations from breaking?
How do you secure an API?
How do you change an API without breaking clients?
Something we did not cover? Ask us directly
Free review · done by an engineer, not a script
See what today’s architecture will cost you later.
Send the product or repository. We reply with the decisions we would make first, which ones get expensive to change, and whether a build is even needed.
Contact
Planning SaaS Architecture work? Let's talk.
Tell us about the business and a senior specialist will get back to you within one business day. If starting with SaaS Architecture looks like the wrong first step, we will say so and suggest what to fix first.
Start with a few details
Expect a reply from a senior team member within one business day. We do not add you to a mailing list.