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Field Service & Dispatch / SLA, KPIs & Service Analytics

First-Time-Fix-Rate & Callback Analyzer: Find the Real Reasons Jobs Bounce Back

Turn your completed work-order history into first-time-fix and callback rates by tech, job type, and customer — with likely root causes (missing parts, skill gap, misdiagnosis) — so a manager can approve fair, targeted coaching and process fixes before anything is assigned.

IntermediateAn afternoonBuilds onNext.jsSupabaseResend
What you'll build

A web tool that ingests your completed work-order history, calculates first-time-fix rate and callback rate broken down by technician, job type, and customer, surfaces the likely root causes behind the callbacks, drafts coaching and process actions, and lets a manager review and approve which actions to issue — protected against unfair attribution and double-counting — then exports the whole analysis as a clean CSV.

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Before you start

  • A Supabase account (free)
  • A Vercel account (free)
  • A Resend account (free)
  • Your completed work-order history as a CSV/sheet (with callback/return flags, tech, job type, reasons)
  • Your own definition of a callback and the time window that counts
  • Claude Code or any AI coding agent

The problem this kills

Everyone in field service knows first-time-fix rate is the number that quietly drives everything — your profit, your truck-roll costs, your customer satisfaction, your tech morale. And almost nobody can tell you, with a straight face, what theirs actually is. The callbacks are buried in a work-order export. "Did that one bounce back?" is a question answered from memory. When a tech does get pulled aside, it's because a loud customer complained, not because the data said so — which feels unfair, because it often is.

So the lever that matters most goes un-pulled. You can't see which job types eat your re-visits, which customers always seem to need a second trip, or whether the cause is missing parts, a skill gap, or a misdiagnosis at the door. Without that, "do better" is the whole coaching plan. You don't need a BI team or a data warehouse to fix this, and you don't need to be a developer. You need your existing work-order history and an afternoon.

What you'll build

A simple internal web tool that turns your completed-work-order history into a real first-time-fix scoreboard. You load your history — completed work orders with their callback/return flags, the assigned tech, the job type, and any reason codes — straight from a CSV or Google Sheet. The tool applies your own definition of a callback (what counts, and the time window that counts) and then computes first-time-fix rate and callback rate, sliced by technician, job type, and customer. For every cluster of callbacks it surfaces the likely root cause — missing parts, skill gap, misdiagnosis, access/no-fault-found, or your own categories — drawn from your reason codes and notes.

Then it does the part that makes it safe to use: it drafts coaching and process actions (a parts-kitting tweak here, a training topic there) and hands them to a manager to review and approve. Crucially, it builds in fair-attribution guards — small sample sizes are flagged, callbacks caused by parts-on-backorder aren't pinned on the tech, and the same work order can never be counted twice. Nothing gets assigned to a person until a manager signs off. The whole analysis exports as a clean CSV in the columns your system expects.

What's inside the Implementation Plan

The downloadable plan is a step-by-step file you paste into an AI coding agent. It opens by interviewing you about your business — how you define a callback and the window that counts, what your job types and trades are, the exact column names and reason codes in your work-order export, your typical and peak volumes, who owns coaching decisions, and the messy edge cases (warranty re-visits, multi-tech jobs, parts-on-backorder, customer-caused returns) — and it tailors the rate math, the root-cause buckets, and the fairness guards to your answers. This is not a generic template: the agent reflects a short spec back to you and waits for your thumbs-up before it builds anything. From there it walks the agent through the history import and dedupe, the first-time-fix and callback calculations, the per-tech/job-type/customer breakdowns, the root-cause clustering, the draft-and-approve action screen, and the CSV export — each step with a ready-to-copy prompt. There's also a fallback so you can build and run the whole thing today with no integration to your field-service software.

The governance it includes (this is the point)

This tool can put a technician's name next to a number that affects their reviews and pay, so it ships with the controls that make that fair and defensible: login so only your team can use it, row-level security so you only ever see your own organization's data, a complete audit trail of who imported, calculated, drafted, and approved what and when, a hard human-approval gate so no coaching or process action is issued until a manager reviews and approves it, and duplicate guards keyed on work-order id so the same job can never inflate — or deflate — a rate twice. On top of that it adds fair-attribution protections: minimum-sample-size flags so a tech with five jobs isn't ranked against one with two hundred, and exclusion rules so callbacks outside the tech's control don't land on them.

Who it's for

Service managers, quality and warranty leads, and dispatchers at HVAC, plumbing, electrical, appliance-repair, refrigeration, restoration, and facilities-maintenance operations — anyone who is measured on repeat visits and wants to coach from evidence instead of the loudest complaint. If you can describe what a callback means at your shop and point at your work-order export, you can build this.

You've got this — start with the plan, paste the first prompt, answer the interview, and you'll have your real first-time-fix number on screen the same afternoon.

Gated download

Enter your email — the plan downloads instantly and a copy lands in your inbox.

By submitting your email you'll also receive the weekly runbookify newsletter. You can unsubscribe at any time.