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Cranley

Kids fit

Whether a home suits young children: stairs that need gates, the pool path with no barrier, windows a child could fall from, a back yard the kitchen looks onto, and the walk to playgrounds, parks and schools.

What it answers

Section titled “What it answers”
  • Is this house safe for my toddler?
  • Is there a playground within walking distance?
  • Which windows need a window guard?

For the agent, the tool is described as: For one scanned home and the youngest child’s age: staircases to gate (floors in the scan), every route from a bedroom to the pool with the missing barrier (runs path_to_water), upper-floor windows judged against IRC R312.2.1 (sill under 24 in with a drop over 72 in), kitchen windows that look onto the back yard (plan placed on the Vexcel footprint), and the walk along the streets to the nearest playground, park, elementary, middle and high school, library, public pool and childcare, with busy roads crossed (OpenStreetMap).

Who it is for

Section titled “Who it is for”

Parent with young kids choosing a home, Parent of a toddler, house with a pool, Family with a teenager who plays soccer.

Inputs

Section titled “Inputs”
Input Type Required Default Notes
scan string yes Scan id. Filled from the selected building.
youngest_age integer (years) yes Asked as: “How old is your youngest child, in years?” Saved preference kids.youngest_age. Range: at least 0, at most 17.
lat number For a phone scan with no location.
lon number
use_vision boolean true Inspect pool-side doors and the yard with the vision model (cached).
nearby boolean true Look up playgrounds, parks and schools in OpenStreetMap (cached).

An input that nothing fills (the selected building, a saved preference, a persona’s preset) becomes a question to the person. The agent asks only for those.

Data used

Section titled “Data used”
Layer Id Needed If it is missing
Doors and windows matterport.openings required The verdict is unknown, with the reason.
Aerial property facts vexcel.property optional The tool runs without it.
Places osm.places optional The tool runs without it.

What it returns

Section titled “What it returns”

A tool result: a verdict (pass, warn, fail or unknown), metrics, checks and findings, each with its source.

  • Draws on the building: a route with its narrow points; pins on what it found; doors, walls or rooms coloured by status.
  • Panel blocks: VerdictHeader, MetricRow, CheckList, EvidenceStrip, FloorPlanMini, AssumptionChips, StepLog.
  • Speed: slow. Read-only.

How it works

Section titled “How it works”

Kids fit: is this home right for young children? Stairs that need gates, every route a small child could take to the pool (path_to_water, folded in), windows a child could fall from, whether the kitchen looks onto the back yard, and the walk to the nearest playground, park and schools with the busy roads crossed on the way.

Reliability

Section titled “Reliability”

Sources this tool gave on the test home:

Where it came from Layer Method Reliability Note
Measured from the scan matterport geometry low Stairs are not in the scan; one flight per floor change
Measured from the scan matterport geometry medium Matterport wall graph and opening sills

The tool sets the label for each value. A model never does. The tools give a scan’s wall graph the layer matterport whichever device made the scan, so a phone scan’s geometry carries that label too.

Limits

Section titled “Limits”
  • Needs: doors and windows. On a scan without it, the verdict is unknown and says why.
  • It is slow: progress steps reach the workspace while it runs.
  • A result is a planning aid, not an inspection.

On the made-up test home

Section titled “On the made-up test home”

This section was written by running the tool when the docs were built, on a hand-made RoomPlan export (no real place was scanned), with no sponsor keys and the network switched off.

Inputs used: youngest_age = 3 (preset of the persona “Parent with young kids choosing a home”).

Pass Suits your children (youngest 3). Not checked: the scan has no location, so the pool, yard and places nearby were not checked.

Value Result Where it came from Reliability
Staircases to gate (floors in the scan, less one) 0 Measured from the scan low
Upper windows with a low sill 0 Measured from the scan medium
Check Measured Against Status
Stairs gated top and bottom 0 0 gates pass
Pool, yard and places nearby not measured unknown

Findings: 1 pass.

Run it

Section titled “Run it”
threshold run kids_fit --scan <scan-id>
curl -X POST http://127.0.0.1:8787/api/tools/kids_fit/run -H 'content-type: application/json' -d '{...inputs}'

Over MCP the tool is named kids_fit. See MCP server and CLI.