API integration for service businesses

Following one job

1. 01

   Enquiry

   Captured from the website, phone or email into the CRM.

   Output: Customer record

2. 02

   Quote

   Prepared from the enquiry and sent; acceptance recorded.

   Output: Accepted quote

3. 03

   Scheduled

   Job created in the scheduling tool with the quote's details.

   Output: Booked job

4. 04

   Completed

   Technician records work, parts, photos and signature.

   Output: Job sheet

5. 05

   Invoiced and paid

   Invoice raised from the job sheet; payment link sent.

   Output: Payment received

Enter details once

Decide which system creates the customer record, usually the CRM or the field service tool, and pass it to the others with a shared identifier. When a quote is accepted, the job should be created automatically with the address, work description and quoted items, so the office is not copying from one screen to another. Site details such as access notes and parking should travel with the job to the technician.

Avoid two systems both creating customers; duplicates quickly follow.

From completed job to invoice

When the technician completes a job on their app, the work done, parts used and any extra time can generate an invoice draft in the accounting software, ready for the office to check and send. Adding a payment link to the invoice, with payment confirmation updating the invoice automatically, shortens the time to get paid. Agree which jobs can be invoiced automatically and which need review, such as jobs with variations from the quote.

Typical systems and their role

Recurring and contract work

Maintenance contracts and regular visits should generate scheduled jobs automatically from the contract record, with invoices raised on the agreed basis, per visit or per period. Linking them means a cancelled contract stops future visits and invoices together.

Seeing the whole picture

With enquiries, quotes, jobs and payments linked, you can see conversion from enquiry to job by source, average time from completion to payment and which work is most profitable, without assembling spreadsheets.

Example: a maintenance company

Exceptions to plan for

Connectors or custom links

Many field service, CRM and accounting tools offer built-in connections to each other or through automation platforms. Use them where they carry the details you need; custom work is worth it where a key link is missing or the built-in connection drops important information such as quoted items or site notes. Test each link with real jobs, including the awkward ones.

Keeping customers informed

Booking confirmations, arrival windows and completion messages can be sent automatically from the scheduling tool. Keep messages accurate and send review requests only after work is complete and any issues are resolved.

Where to start

Start with the stage where retyping or delay costs most, often completed jobs waiting to be invoiced, then connect quotes to scheduling once that link works reliably.