Custom API & Systems Integration
Your systems, finally talking.
Your website, your booking system, your CRM, your accounting and your inbox finally talk to each other — so a booking on your site becomes a customer record, an invoice, and a follow-up without anyone re-typing anything. We build the plumbing between the tools you already pay for, so the double-entry and the copy-paste and the "did that get into QuickBooks?" just stop.
For businesses running 3+ disconnected tools and paying for it in staff time and errors: e-commerce, multi-location service businesses, clinics, tour operators, anyone whose "system" is a person moving data between apps. It kills double-entry, sync errors, and the fragile spreadsheet holding it all together.
What's included
What it does — and what's included.
| Phase / item | What you get |
|---|---|
| Discovery | Map every system, every hand-off, and every place data is re-keyed; define the source of truth for each field. |
| Build | Integration middleware (n8n self-hosted by default, or custom Node/Python), data-sync logic, transforms, error handling and retries. |
| Integrations | Two or more of: e-commerce (Shopify/Woo), CRM (HubSpot/others), accounting (QuickBooks/Xero), scheduling, email/SMS, custom apps via API. |
| Reliability | Monitoring, alerting on failures, idempotency and de-dup so nothing double-posts. |
| Testing | End-to-end runs across real scenarios, failure-mode testing, data-integrity checks. |
| Docs & go-live | Architecture diagram, data-flow map, runbook, supervised cutover. |
Not included: the underlying software subscriptions; replacing a system you've outgrown (we integrate, we don't re-platform); one-off data migration unless scoped. Common add-ons: AI enrichment on the data in transit, dashboards, additional systems later, workflow logic on top (pairs with Workflow Automation).
Transparent pricing
Starting at $5,000 to build. From $299/mo to keep it sharp.
Moves up with: number of systems; one-way vs. bidirectional sync; data-transform complexity; API quality of each tool (a poorly documented or rate-limited API adds hours); volume and real-time requirements. Two clean systems, one-way, sits near $5,000; a multi-system bidirectional hub approaches (and past) $25,000.
- Custom API & Systems Integration — build
- Starting at $5,000. Typical range $5,000–$25,000, fixed-quoted to your setup.
- Care Plan — keep it running
- Requires a Care Plan, from $299/mo (Core); Growth for 3+ integrated systems.
- Payment terms
- 50% to start, 50% at go-live under $10,000; 50/25/25 at $10,000 and up.
- Usage
- AI usage (and SMS where the build sends messages) passes through with a monthly allowance included, itemized on every invoice — never marked up in secret.
Go-live in 3–8 weeks
From copy-paste to one source of truth.
Week 1
Discovery.
We map every system, every hand-off, and every place data is re-keyed, and rule on the source of truth for each field.
Weeks 2–5
Build.
Middleware, sync logic, transforms, error handling and retries — with idempotency so nothing double-posts.
Weeks 5–7
Testing.
End-to-end runs across real scenarios, failure-mode testing, and data-integrity checks on real data.
Weeks 7–8
Cutover.
Architecture diagram, data-flow map and runbook handed over, then a supervised cutover. The Care Plan monitors it from day one.
Client effort: Your effort: medium — you provide access, field-mapping decisions, and testing sign-off on real data. Longer timelines for many systems.
Works with what you've got
It connects the tools you already pay for.
We build on top of your existing stack — no rip-and-replace.
- E-commerce: Shopify, WooCommerce.
- CRM: HubSpot and others.
- Accounting: QuickBooks Online, Xero.
- Scheduling, email/SMS, and custom apps via API.
Prerequisites: admin access and API availability on each system (some tools gate APIs to higher plans — we confirm in discovery), and a decision-maker to rule on the source of truth for shared data.
What it looks like in practice
An example engagement (illustrative).
A fictional-but-realistic engagement to show the shape of a build — not a case study, and not a guarantee. Real proof arrives with our founding clients.
Alpine Bloom florist + online shop, Vernon Illustrative
Online orders (Shopify), walk-ins (Square), deliveries (a spreadsheet) and books (QuickBooks) never agree. RevyTech AI builds a hub: every order, wherever it starts, creates one customer record, one invoice, and a delivery task, all reconciled nightly. Setup $13,500, Growth care. Month-end stops being a forensic investigation.
Questions
Custom API & Systems Integration FAQ.
Which systems can you connect?
Two or more of: e-commerce (Shopify/Woo), CRM (HubSpot and others), accounting (QuickBooks/Xero), scheduling, email/SMS, and custom apps via API. If it has an API or a supported connector, we can almost certainly wire it in — API availability is confirmed in discovery before you commit.
What happens when something fails mid-sync?
The build includes monitoring, alerting on failures, retries, and idempotency/de-dup logic so nothing double-posts. Failure modes are tested before cutover, and the Care Plan means we usually fix an integration break before you feel it.
Do we have to replace the software we use?
No — that's the point. We integrate the tools you already pay for; we don't re-platform. If a system is genuinely at end-of-life, we'll tell you, but replacing it is a separate decision, not a requirement.
What does it cost?
Builds start at $5,000 and are fixed-quoted before we begin (typical range $5,000–$25,000 by the number of systems and sync complexity). Every AI build includes a Care Plan from $299/mo — Growth for 3+ integrated systems. Full detail on the pricing page.
Pairs well with
Most builds don't stay solo.
Every system you add sits under the same single Care Plan — the tier grows only when your setup does.
Is it worth it for your business? Let's find out — free.
Book a free 20-minute AI assessment. We'll tell you what this build would do for you, what it'd cost — and if it's not worth it yet, we'll say so.
Prefer to talk now? Call (236) 837-3550 — a real BC-based human picks up. We reply within one business day, usually faster.