JustFix

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Use this skill when the user asks for a quote, estimate, price, or "how much" for a UK trades job – electrical, plumbing, locksmith, glazing, carpentry, hand...

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JustFix Estimator Skill#

A drop-in skill that lets your AI agent quote UK trades jobs in real time, and pop the user out to the browser to complete the booking.

JustFix is a UK home-services platform. The skill talks to the public JustFix Estimator MCP server, returns a price breakdown for any of 13 service categories, and produces a tappable booking link the user can complete in their browser.

When to use this skill#

Trigger on any of these intents, in any phrasing:

"how much for [trades job]"
"what would [job] cost"
"estimate for [job]"
"quote me for [job]"
"price for a [trade]"
"book a [trade]"
"I need a [plumber / electrician / locksmith / etc.]"
"my [boiler / lock / drain / tap / window] is broken"
"what services does JustFix do"

If the user is outside the UK, mention that JustFix is UK-only and only quote if they confirm they're in the UK or want a UK quote anyway.

How to use this skill#

Three tools are available on the MCP. Use them in this order depending on intent:

Tool 1: `list_services` (when user asks what's available)#

Returns the 13 service categories with their hourly rates. Use when:

"what services do you offer"
"what can I book"
The user mentions a job and you're not sure which service code fits

Tool 2: `call_out_fee` (when user asks about the booking fee)#

Returns the flat call-out fee that applies to every booking. Use when:

"is there a call-out charge"
"what's the minimum"
The user wants to understand the total cost ahead of confirming

Tool 3: `service-estimate-card` (the main one – generates a quote)#

Required arguments:

service_code (string) – one of the codes from the service-code map below
booking_description (string) – a clear one-sentence description of the work

Optional arguments:

estimate (number, default 1) – hours estimated to complete the job
work_items (array of strings) – optional list of specific tasks within the job

Returns the cost breakdown and a unique booking URL the user can tap to complete the booking on https://my.justfix.app.

Service-code map#

Map natural-language descriptions to the right service_code:

User saysservice_code£/hrelectrician, electrical, sockets, lights, wiring, fuse box, fuseelectrical£90plumber, plumbing, leak, dripping tap, blocked sink, water pressureplumbing£90locksmith, lock, locked out, change locks, keylocksmith£90glazier, glazing, broken window, broken glass, replace glassglazing£80carpenter, carpentry, wooden door, skirting, floorboards, joinerycarpentry£90handyman, handyperson, odd jobs, mounting, assembly, picture hanginghandyman£80heating, gas heating, boiler not working, radiator, central heatingheating_and_gas£90gas appliance, gas hob, gas oven, gas cooker, gas safetygas_appliances£90roofer, roofing, roof leak, slipped tiles, guttersroofing£80drains, blocked drain, sewer, drainage, blocked toiletdrains£90white goods, dishwasher, washing machine, tumble dryer, fridgewhite_goods£55boiler service, annual boiler check, gas safety certificate, CP12boiler_service£70anything else / unsuresomething_else£80

If the user describes a job that could fit two codes (e.g. "my dishwasher is leaking" – could be plumbing or white_goods), pick the more specific one ( white_goods) and mention you assumed that.

Default-hours estimates#

If the user doesn't say how long the job is, use these sensible defaults:

ServiceDefault hoursNotesboiler_service1Fixed-scope annual check, 1 hour is standardlocksmith1Lock changes take ~1hrgas_appliances1-2Simple install / safety checkwhite_goods1Most diagnostics + repairselectrical2Variable – ask if scope is biggerplumbing2Variable – ask if scope is biggerglazing2Small window replacementcarpentry2Standard repair / installhandyman2Catch-allheating_and_gas2Diagnostics + simple fixdrains2Clearance + camera survey if neededroofing3Minimum useful site visitsomething_else2Catch-all default

Always tell the user how many hours you've estimated so they can correct you. The estimate is just a starting point.

How to render the response#

After calling service-estimate-card, render the response as a clean, channel-appropriate card. Always include:

Service name and brief scope (one line)
Cost breakdown as a table or list
The tappable booking URL – [Complete booking →](URL) if your channel renders markdown, otherwise the raw URL
Honest scope caveat – the engineer may take more or less time, the final invoice reflects actual time

Markdown template (works in OpenClaw, Hermes, Claude Code, Cursor, Telegram, Slack)#

markdown

🔧 **[Service Name] Estimate**

**Scope:** [booking_description]
**Estimated duration:** [estimate] hour(s)

| Line | Amount |
|---|---|
| Labour ([hrs] × £[rate]/hr) | £[hrs × rate] |
| Call-out fee | £50.00 |
| **Total estimate** | **£[total]** |

📅 **[Tap to complete booking →]([booking_url])**

_The final invoice will reflect actual time spent on the job._

Plain-text template (for surfaces without markdown)#

text

JustFix [Service Name] estimate
Scope: [booking_description]
Estimated duration: [estimate] hour(s)

Labour: £[hrs × rate]
Call-out fee: £50.00
Total estimate: £[total]

Complete booking: [booking_url]

Final invoice reflects actual time spent.

Inline-button hint (channels that support it)#

If your channel exposes inline buttons (Telegram inlinebuttons, Slack blocks, Discord buttons), render the booking URL as a button labelled "📅 Book this job" pointing at the booking_url. The URL is unique per estimate – use exactly what the MCP returns.

What the skill can and can't do#

CAN:

Quote any of the 13 JustFix service categories
Tell the user the hourly rate, call-out fee, and total estimate
Generate a unique booking link the user can tap to complete the booking on the JustFix website (a browser pop-out – they finish the booking on my.justfix.app)
Handle scope changes ("actually make it 3 hours") – just call the tool again with the updated estimate

CAN'T:

Complete the booking itself (needs customer auth and a real form on my.justfix.app)
Check engineer availability (not exposed via MCP – the booking page handles this)
Take payment (handled on the booking page after the customer confirms)
Quote outside the UK (JustFix is UK-only)
Quote materials or parts (this is a labour-only estimate)

When the user is ready to book, send them the URL. The booking page asks for their details, postcode, preferred date, and payment.

Tracking and attribution#

Each service-estimate-card call returns a URL with a unique chatgpt_booking_link_id UUID query parameter. JustFix uses this to attribute MCP-driven bookings. Don't strip or modify the URL – pass it through to the user exactly as returned.

Sample conversation#

User: How much for someone to come and fix my dripping kitchen tap?

Agent: Calls service-estimate-card with service_code=plumbing, estimate=1, booking_description="Diagnose and repair dripping kitchen tap, replace washers or cartridge if needed."

🔧 Plumbing Estimate

Scope: Diagnose and repair dripping kitchen tap, replace washers or cartridge if needed. Estimated duration: 1 hour

LineAmountLabour (1 hr × £90/hr)£90.00Call-out fee£50.00Total estimate****£140.00

📅 Tap to complete booking →

The final invoice will reflect actual time spent on the job. If you'd like a bigger or smaller estimate, just say.