CentrusBigChange

job management · read and write

Ask the live job from site. Hand Centrus the admin.

Centrus integrates with BigChange for UK field service businesses. Ask the live job, and the inbox, the files and the finance system in the same answer. The admin is done by agents and written back to BigChange. BigChange stays your job system.

Book a demoSee all 145 use cases

start with these

Every question about a job waits for someone in the office to open BigChange.

Engineers ask about the site on WhatsApp and the answer comes from the live job. Agents raise jobs from portal emails, write up voice notes and quote follow-on work the moment BigChange records the change. Everything lands back in BigChange, where planners and accounts already look.

  1. 01

    Tomorrow's jobs and the site brief

    The night before, the engineer asks on WhatsApp. The jobs, keysafe, parking and the last three visits come back.

    Read the use case: Tomorrow's jobs and the site briefWorks with BigChange, Joblogic, Simpro, Excel, Word, SharePoint, OneDrive, Google Drive, WhatsApp, Dropbox

  2. 02

    Raise portal jobs

    Portal mail becomes an unscheduled job on BigChange, and the account manager is told.

    Read the use case: Raise portal jobsWorks with BigChange, Joblogic, Simpro, Outlook, Gmail

  3. 03

    Worksheets from a voice note

    One voice note from the van. The worksheet is written in your format, and Centrus asks for anything missing.

    Read the use case: Worksheets from a voice noteWorks with BigChange, Joblogic, Simpro, WhatsApp

  4. 04

    Follow-on quote from the worksheet

    The job closes, the follow-on work on the worksheet is priced, and the account manager has the quote the same day.

    Read the use case: Follow-on quote from the worksheetWorks with BigChange, Joblogic, Simpro, Outlook, Gmail, Excel

  5. 05

    Out-of-hours journeys, logged daily

    Last night's tracker journeys, matched to call-outs and logged. Any with no job goes to fleet on WhatsApp.

    Read the use case: Out-of-hours journeys, logged dailyWorks with BigChange, SharePoint, OneDrive, Google Drive, WhatsApp
01 / 05

setup

Three keys, pasted once

An organisation administrator does the first step. Everyone else clicks Enable and starts asking.

01

Connect BigChange

In Integrations, open BigChange REST and paste three keys from your BigChange account: Customer ID, Client ID and Client secret. Centrus checks them before saving.

How to connect

02

Decide who does what

In Settings, BigChange Tools, tick the actions each person or team can use. Engineers can read, while the office raises jobs and quotes.

Set tool permissions

03

Ask, then automate

Start with a job you already know. When a question turns into a routine, describe it in Agent Builder, which has its own BigChange connection.

BigChange in Agent Builder

what it covers

What Centrus can read and change in BigChange

Each row is a record type in your BigChange account. Ask works in chat on the web, WhatsApp and Teams. Change works from chat and from agents, for people whose tools are switched on. Trigger means an agent can start the moment BigChange reports the change.

connects through
BigChange REST API and Web Services
reads and writes
Jobs, quotes, invoices, POs, contacts, worksheets, stock
starts on
Webhooks across 14 record types
where people ask
Web, WhatsApp and Teams

  • Jobs

    ask

    List, look up, search by address, status history, each engineer's schedule

    change

    Create, update, schedule, unschedule, start, set the result, cancel

    trigger an agent

    Created, modified, status changed, deleted

  • Job groups

    ask

    List and look up, with line items and flags

    change

    Create, update, complete, complete financially

    trigger an agent

    Created, modified, deleted

  • Contacts and sites

    ask

    Search by name, address or reference, access hours, contact groups

    change

    Create, update, stop and restart, access hours

    trigger an agent

    Created, modified, deleted

  • Quotes

    ask

    By created or sent date, outstanding only, line items

    change

    Create, update, add lines, mark as sent, accept, reject

    trigger an agent

    Created, modified, deleted

  • Invoices

    ask

    By created or sent date, unpaid only, line items

    change

    Create, update, add lines, mark as sent, mark paid, cancel

    trigger an agent

    Created, modified, deleted

  • Purchase orders

    ask

    List, look up, line items, series

    change

    Create, update, add lines, mark as sent, receive

    trigger an agent

    Created, modified, deleted

  • Sales opportunities

    ask

    Stages, probabilities, line items

    change

    Create, update, add lines

    trigger an agent

    Created, modified, deleted

  • Worksheets

    ask

    Worksheets, questions and answers on a job

    change

    Set worksheets and answers on a job, from agents

    trigger an agent

    Answers modified

  • Notes and flags

    ask

    Notes, progress history, flags on any record

    change

    Create and update notes, add and remove flags

    trigger an agent

    Notes created, modified, deleted

  • People

    ask

    Search people, consent history

    change

    Create, update, record data consent

    trigger an agent

    Created, modified, deleted

  • Engineers and users

    ask

    Resources, resource groups, scheduled jobs

    change

    Create and update resources and users

    trigger an agent

    Created, modified, deleted

  • Stock

    ask

    Items, details, suppliers, movements, stock on a job

    change

    Create and update items and suppliers, add stock to a job

    trigger an agent

    Created, modified, deleted

  • Vehicles

    ask

    List and look up vehicles

    change

    Create and update vehicles

    trigger an agent

    Vehicle changes, harsh driving, idling, trips and journeys

  • Timesheets

    ask

    List and look up

    change

    Create and update

    trigger an agent

    Schedule or chat

  • Reference data

    ask

    Job types, VAT, nominal and department codes, product categories

    change

    Read only

    trigger an agent

    Schedule or chat

Plus BigChange Web Services, in Agent Builder

For the parts the REST API does not reach: attachments, branded PDFs, job signatures, JobWatch documents, contracts, GPS journeys and mileage, resource absences, asset defects, expenses and the scheduling assistant.

See how chat and agents work in Centrus
“Every engineer has the information they need instantly. We save over 83 hours per week.”
James Higginson, Operations Director, PFL ElectricalPFL runs BigChange, with about 100 messages a day to Centrus.Read the case study

everything with BigChange

All 145 use cases

Grouped by area of work. Search, or narrow the list by role or by the other systems you run.

145 use cases

01

New work coming in

19

Enquiries, portal tickets and emails turned into booked jobs.

New work use cases
02

Quotes and sales

21

Priced from your rate card, sent the same day, chased until they land.

Quotes use cases
03

Scheduling and dispatch

22

Visits confirmed, each day on WhatsApp, customers texted on the way.

Scheduling use cases
04

Engineers on site

17

The site brief the night before, the manual on site, the worksheet from the van.

On site use cases
05

Paperwork and compliance

22

RAMS, worksheets, vans and subcontractor cover, checked before anyone has to chase.

Paperwork use cases
06

Finance and cash flow

17

Invoices chased, matched, checked against the contract and sent.

Finance use cases
07

Reports and numbers

22

Answers, reports and alerts from the systems you already run.

Reports use cases
08

Team and knowledge

5

Your best people's answers, available to everyone.

Team use cases

from the blog

Read more on this

More on job systems
all integrationsIntegrationsnext integrationJoblogicJobs, sites, assets and quotes answered from live Joblogic, with quotes raised from the same chat.

questions

BigChange questions

It gives your team an AI that reads and writes your BigChange account. People ask in plain English and get answers from live jobs, quotes, invoices and worksheets. Agents built in Agent Builder take the repeat work: jobs from client emails, quotes from worksheets, invoice chasing and monthly reports.

Yes. Describe the job in a sentence, for example: when a job is completed, read the worksheet and raise a quote for any follow-up work. Agent Builder lays out the steps and you check them before it goes live. It runs on a schedule, when an email arrives, or when BigChange sends a webhook.

No. BigChange stays your job system and the record everyone works from. Centrus works through BigChange's own API, with over 100 actions, so a job or a purchase order raised from chat is a normal BigChange record that planners and accounts see straight away. Nothing is moved out of BigChange.

That AI only sees what lives inside BigChange. It does not see your finance system, your client portals, your shared files or anything else running the business day to day. Centrus sits across everything you use, so it is not limited by what one vendor decided to build.

REST API keys for your account: a Customer ID, a Client ID and a Client secret. An organisation administrator pastes them in once. If you do not have them to hand, ask your BigChange account manager, and we can go through it on the demo.

Yes. It can create and update jobs, quotes, invoices, purchase orders, contacts and more. You choose which actions each person can use. In agents, add an Approval step so a person signs off before anything is written or sent.

Chat reads BigChange when you ask. Agents can start from a BigChange webhook the moment a job, quote, invoice, worksheet or vehicle changes, so nothing waits for an overnight sync.

Yes. Engineers message Centrus on WhatsApp with the same permissions they have on the web. They can ask about a site, send a voice note for a worksheet, or run an agent you have published to chat.

Yes. One agent can read BigChange, then email through Outlook or Gmail, save an Excel or Word file to OneDrive, or look something up in Xero or Sage Intacct. Describe the whole job and Agent Builder wires the steps together.

Job system integrations, BigChange included, come with every plan, from £299.99 a month. Chat uses message credits and agents use automation credits. A webhook trigger uses nothing while nothing changes. Plans run month to month, with no lock-in, and paying annually saves 20%.See full pricing

Yes. Data is encrypted in transit and at rest, access is controlled per person through tags and roles, and Centrus follows UK GDPR. Your data is not used to train AI models, and every customer can have a data processing agreement on request.How we protect your data
Centrus AI

in the 30 minutes

  1. 01We start with how your operation actually runs, on the desk and in the field.
  2. 02We show it on a BigChange setup like yours: a question about a live job, then the agent that raises your portal jobs.
  3. 03We pick out the admin that should run itself first.

See it working with BigChange.

Found the use case you need, or doing something that isn't on the list? Book 30 minutes. Bring the job you want handed over, and we will show it on a setup like yours. You leave with a plan.

30 minutes / UK team / No lock-inOr see pricing