BigChange is a job management platform used by field service businesses across the UK, from facilities maintenance and fire and security firms to drainage, waste and cleaning companies. It brings scheduling, a mobile app with worksheets, vehicle tracking, a CRM, quotes and invoicing into one system. Planners use it to keep engineers moving. Directors, account managers and finance teams need the same data, but they want a straight answer rather than another map or report.
An AI agent connected through Agentic CMMS gives them that answer. Ask in Claude, ChatGPT or another MCP client, and the agent reads jobs, schedules, worksheets, contacts and invoices in BigChange. With write access approved, it can also book jobs and add notes, all under your own login.
What your AI agent can do with BigChange
- Read today's schedule. "Which engineers are running behind, and which jobs are still unallocated for this afternoon?"
- Find failed checks. "Which fire alarm service worksheets this week recorded a fault or a failed device?" The agent reads the worksheet answers and lists the sites.
- Book a reactive job. "Book an emergency drain unblock at the Kingsway retail park for today, contact Priya Shah." The agent creates the job with the right contact and site.
- Prepare a customer review. "Summarise every job we did for Northfield Housing last quarter, with first-time fix and any revisits."
- Chase unbilled work. "Which completed jobs from last week have no invoice raised?" Finance gets the list before month end, not after it.
- Track quotes. "Which remedial quotes are waiting for customer approval for more than ten days?"
- Check vehicle use. "How many miles did the van fleet cover on contract work in October?"
- Spot overdue maintenance. "Which planned maintenance jobs for our care home contracts are overdue?"
BigChange with your other systems
Field service firms in the UK often pair BigChange with accounting, fleet and safety tools. Connect them and one question reaches all of them:
- Match BigChange invoices and job costs with the ledgers in Sage 200 or Xero.
- Compare vehicle mileage from BigChange with service and repair records in Fleetio.
- Link a risk assessment or site inspection in SafetyCulture to the job it covers.
- Post a summary of the day's emergency call-outs to your operations channel in Microsoft Teams.
For contract managers and directors
BigChange customers often run planned maintenance contracts for housing associations, retailers and public bodies, with reporting written into the contract. An agent that answers in plain language cuts the time to prepare a monthly review, because the figures and the worksheet evidence come from the same place. Each person approves their own agent, owners and admins choose which roles may book jobs or raise invoices, and the activity log records every call for your own audit trail.