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MCP server · registry snapshot 2026-10-23 · last tested 2026-10-23

com.craftquantities/engine

Construction quantities from cited calculators, takeoffs, a planner and house drawings. No prices. — the publisher's description

1 of 2 record checks metRead-only · tools listed 2026-10-23Topic: other · AI-classifiedPricing: free · AI-classifiedversion 1.4.0streamable HTTP38 tools

Summary

com.craftquantities/engine is a remote MCP server listed in the official MCP registry at version 1.4.0. On 2026-10-23 ProtocolProbe connected to it in read-only mode and read its inventory: 38 tools, 0 resources and 4 prompts.

Record checks

1 of 2 record checks met · 7 do not apply

  • met: Registry entry is active and says how to run it
  • not met: Source repository link opens
  • not applicable: Repository is not archived
  • not applicable: Code pushed to the repository in the 90 days before our check
  • not applicable: Repository publishes a security policy (SECURITY.md)
  • not applicable: Package names its licence with a standard (SPDX) identifier
  • not applicable: The version the registry lists can be installed and is not withdrawn
  • not applicable: npm package carries build provenance (attestation)
  • not applicable: No known critical or high advisory in the package or its dependencies
  • Not ranked by downloads: a remote server publishes no download figure
  • Not ranked by stars: no public GitHub repository

From public records, not a safety rating. Each check with its reason · Is it safe to install?

Key facts

Runs
remote (hosted by the publisher)
Transport
streamable HTTP
Sign-in
none needed to open a session
Tools
38
Described as changing data
10 of 38 toolsAI-classified
Topic
otherAI-classified
Pricing
freeAI-classified
Last tested
2026-10-23

Add to your client

Worth knowing before you connect it

  • 10 tools are described as changing something (create_project_file_from_calculations, create_project_file_from_takeoffs, create_project_file_from_house, …): our AI model's reading of the descriptions, not something we tested, and the server opened a session without any credential. We did not call them.

Each line comes from a section below, with its source and date.

How fresh this is

Live-tested
yes, a real session (not a text-only review)
Last tested
2026-10-23
Mode
read-only (no tool calls)
Latest version
1.4.0, published 2026-10-18 (registry, as of the 2026-10-23 snapshot)
First listed version
2026-10-12 (earliest version still in the registry; older removed versions would be earlier)
Version history
3 versions listed, 2026-10-12 to 2026-10-18; 3 in the 90 days before the 2026-10-23 snapshot.
Most recent 3 versions
  • 1.4.0 · 2026-10-18
  • 1.3.0 · 2026-10-12
  • 1.1.0 · 2026-10-12
(versions still listed in the registry only)
Registry data
snapshot 2026-10-23
Package and repository
checked 2026-10-22
Engine
mcp-runtime-engine@0.1.0 · sdk@1.32.0

Changes since the last refresh

New in the registry: not in the list of 2026-10-04, listed on 2026-10-23 with version 1.4.0 (published 2026-10-18).

Source: the official MCP Registry list on 2026-10-04 and on 2026-10-23.

What it is

What does this server offer?

Observed inventory
38tools
0resources
4prompts

10 of 38 tools are described as changing something (creating, editing, deleting, sending or running). For 1 the reading was uncertain, so no mark is shown.

  • searchon 763 other serversreads or searches

    “Searches the site's construction pages for a question in everyday words, such as how much concrete or tile a job needs, and returns the matching pages: id, kind, title, link, description and slug.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    3 inputs, 1 required
    • querystringrequired“What to find, such as "concrete slab" or "skirting board".”
    • limitinteger
    • kindsarray“Only these kinds of result; every kind when left out.”
  • fetchon 432 other serversreads or searches

    “Returns the full text of one Craft Quantities page, identified by its id: what the page works out, its inputs or measurements with units and opening values, and its sources.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    1 input, 1 required
    • idstringrequired“A page id, such as calculator:concrete-calculator, takeoff:concrete-slab or diagnosis:drain-gurgles.”
  • get_calculatoron 2 other serversreads or searches

    “Returns the input fields of one calculator, identified by its slug: each field's id, label, accepted units, range and default value in metric and US units, with the calculator's version, page and cit…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    2 inputs, 1 required
    • slugstringrequired“The calculator's slug, such as concrete-calculator.”
    • detailstring“full (the default): the whole answer.”
  • calculateon 58 other serverscalculates or converts

    “Computes the result of one calculator, identified by its slug, from the input values given: the amount of material a job needs, such as the bags of concrete for a slab or the sheets of drywall for a …”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    7 inputs, 1 required
    • slugstringrequired“The calculator's slug, such as concrete-calculator.”
    • inputsobject“The calculator's input values, by input id (an unknown id is refused with the accepted ids).”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • marketstring“Optional.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • explainboolean“true adds the working: the inputs as the calculator received them, every intermediate figure its own compute reports with its unit, the range check and the uni…”
    • detailstring“full (the default): the whole answer.”
  • convert_unitson 28 other serverscalculates or converts

    “Converts one value from one unit to another, for example 2 m³ to cubic yards, with the exact factor the site's calculators apply, and returns the converted value and the factor.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    5 inputs, 3 required
    • valuenumberrequired
    • fromstringrequired
    • tostringrequired
    • dimensionstring“Only where a unit names more than one kind of quantity.”
    • detailstring“full (the default): the whole answer.”
  • get_sourceson 36 other serversreads or searches

    “Where does a figure come from, and how is it cited?”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    2 inputs, 1 required
    • slugstringrequired“The calculator's slug, such as concrete-calculator.”
    • detailstring“full (the default): the whole answer.”
  • open_in_site_link

    “Returns a link that opens a construction calculator's page on craftquantities.com with the reader's figures filled in and their unit system, so a person can see or change the working on the page.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    6 inputs, 1 required
    • slugstringrequired“The calculator's slug, such as concrete-calculator.”
    • inputsobject“The calculator's input values, by input id (an unknown id is refused with the accepted ids).”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • marketstring“Optional.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • get_takeoffon 1 other serverreads or searches

    “Returns the measurements one whole-job takeoff needs, identified by its id: each measurement's id, unit and opening figure, its build-up choices, the calculators it runs and what it leaves out.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    2 inputs, 1 required
    • takeoffstringrequired“A takeoff id, such as concrete-slab.”
    • detailstring“full (the default): the whole answer.”
  • run_takeoffon 1 other servercalculates or converts

    “Works one whole-job takeoff, identified by its id, from the measurements given: the materials list of a job such as a slab or a deck, each line from its own calculator, with what to order, waste allo…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    9 inputs, 1 required
    • takeoffstringrequired“A takeoff id, such as concrete-slab.”
    • measurementsobject“Measurement id → value, each length, area or volume with its unit ("12 ft", {"value": 3.6, "unit": "m"}); counts as numbers.”
    • selectionobject“Build-up choice id → option id, the takeoff's own (a stud size, an insulation, a cladding).”
    • allowancesobject“Row → an allowance the reader sets: a percentage (cutting waste, overlap), or the option an allowance follows (a lay pattern).”
    • leaveOutarray“Rows the reader leaves out of the job: still worked and shown, not put in the project or counted in labour.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • marketstring“Optional.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • get_exampleon 21 other serversreads or searches

    “Returns one worked construction estimate from the site, identified by its slug: the measurements, the steps in order with the calculator each uses, the figure each step pins and the waste chosen.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    2 inputs, 1 required
    • slugstringrequired“A worked example's slug, such as bathroom-gutted-and-retiled.”
    • detailstring“full (the default): the whole answer.”
  • run_examplecalculates or converts

    “Re-runs every pinned step of a worked construction estimate now, in both unit systems, and returns whether each still meets the published figure.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    2 inputs, 1 required
    • slugstringrequired“A worked example's slug, such as bathroom-gutted-and-retiled.”
    • detailstring“full (the default): the whole answer.”
  • create_project_file_from_calculationscreates or changes datadescribed as changing data

    “Creates one My Project backup file from a list of calculator lines (each a calculator slug and its input values).”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    5 inputs, 1 required
    • namestring“The new project's name.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • marketstring“Optional.”
    • calculatorsarrayrequired“The calculator lines: each a slug and its input values.”
    • detailstring“full (the default): the whole answer.”
Show 26 more tools
  • create_project_file_from_takeoffscreates or changes datadescribed as changing data

    “Creates one My Project backup file from a list of whole-job takeoffs (each a takeoff id and its measurements).”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    5 inputs, 1 required
    • namestring“The new project's name.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • marketstring“Optional.”
    • takeoffsarrayrequired“The takeoffs: each an id and its measurements.”
    • detailstring“full (the default): the whole answer.”
  • create_project_file_from_housecreates or changes datadescribed as changing data

    “Creates one My Project backup file from a House Estimator form: the house's lines, and its drawing, which the site's canvas reopens.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs, 1 required
    • namestring“The new project's name.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • housesarrayrequired“The House Estimator form (one house; two give their lines without a drawing).”
    • detailstring“full (the default): the whole answer.”
  • create_project_file_from_plancreates or changes datadescribed as changing data

    “Creates one My Project backup file from a room plan: one planned space, or several spaces and a roof.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs, 1 required
    • namestring“The new project's name.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • planobjectrequired“One planned space, or a planned project of spaces and a roof.”
    • detailstring“full (the default): the whole answer.”
  • create_project_file_from_drawingcreates or changes datadescribed as changing data

    “Creates one My Project backup file from a Construction Canvas drawing: its lines, and the drawing itself, which the site's canvas reopens.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs, 1 required
    • namestring“The new project's name.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • drawingobjectrequired“The drawing: a house form, shapes, drawing commands or a canvas document.”
    • detailstring“full (the default): the whole answer.”
  • check_quoteon 4 other serverscalculates or converts

    “Is a builder's quote right on quantities?”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    8 inputs, 2 required
    • jobstringrequired“The quote check: bathroom-quote, plastering-quote, or a takeoff's ({takeoff id}-quote).”
    • quotestringrequired“The quote's text.”
    • measurementsobject“Measurement id → value, each length, area or volume with its unit ("12 ft", {"value": 3.6, "unit": "m"}); counts as numbers.”
    • selectionobject“Build-up choice id → option id, the takeoff's own (a stud size, an insulation, a cladding).”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • marketstring“Optional.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • estimate_housecalculates or converts

    “Estimates the materials to build one rectangular house of one or two storeys from a few figures (footprint, walls, roof, openings): every quantity with what to order, assumptions, plans of each store…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    11 inputs
    • examplestring“Start from one of the site's example houses (its slug) in place of the estimator's opening house.”
    • valuesobject“The form's figures, each length with its unit: length, width, storeyHeight, eaveOverhang, rakeOverhang, slabThickness, footingWidth, footingDepth, trenchDepth,…”
    • storeysinteger
    • familystring
    • selectionobject“The exterior wall's build-up choices.”
    • pitchstring“Roof pitch, rise in 12.”
    • roofFamilystring
    • roofSelectionobject
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • get_planneron 1 other serverreads or searches

    “Returns the room planner's fields for one kind of space: its figures, surfaces and finish ids, scope questions and rows, with their ids.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    2 inputs, 1 required
    • kindstringrequired“The kind of space: a room or a bathroom (from its size, doors and windows), or a slab, deck, driveway, fence, loft, retaining wall, exterior wall or stair.”
    • detailstring“full (the default): the whole answer.”
  • plan_roomon 1 other servercalculates or converts

    “Plans one space, such as a room or a bathroom, from its size, openings and the finishes chosen, as the site's room planner does, and returns its materials list: each row with its quantity, what it st…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    13 inputs, 2 required
    • kindstringrequired“The kind of space: a room or a bathroom (from its size, doors and windows), or a slab, deck, driveway, fence, loft, retaining wall, exterior wall or stair.”
    • figuresobjectrequired“The space's figures, by the planner's ids, each a length with its unit (a room: length, width, height, wallThickness; a fence: length, height; a stair: totalRi…”
    • doorsobject
    • windowsobject
    • finishesobject“Surface role → finish id, by the planner's ids.”
    • scopeobject“Scope question name → answer value, by the planner's ids.”
    • intentstring“A trade, or everything.”
    • leaveOutarray“Branch ids to leave out.”
    • inputsobject“Branch id → { calculator input id: value in its base unit }.”
    • namestring
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • plan_projecton 3 other serverscalculates or converts

    “Plans several spaces together, with an optional roof over them, as one project in the site's room planner, and returns each space's rows, every line together, labour hours and the plan.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    5 inputs, 1 required
    • spacesarrayrequired“The spaces, in order, each one planned space.”
    • roofobject
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • create_drawingcreates or changes datadescribed as changing data

    “Draws one plan on the Construction Canvas from the shapes, rooms laid out by adjacency on a grid, house figures, drawing commands, canvas document or template given, and returns its materials list, a…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    11 inputs
    • houseobject“The House Estimator's form: the house drawn as the estimator draws it.”
    • commandsarray“Drawing commands, in order, on the canvas's blank drawing (one storey; the wall, partition, window and door types).”
    • documentobject“A Construction Canvas document (schema 1 to the canvas's current), opened and checked by the canvas's own opener.”
    • shapesarray“Simple shapes the assistant has read from the reader's words — a room, a deck, a patio, a bed, a path, a fence of legs and turns — compiled into the canvas's o…”
    • layoutobject“Rooms by name, size and which room each stands against, laid out on a grid: shared walls drawn once as partitions, every snap or move reported, and each room c…”
    • templatestring“A Construction Canvas template's slug (the template index lists them: single-room, deck, two-car-garage …): the drawing its page shows, in the reader's system,…”
    • variantstring“With template: one of its two "what changes if" variants, by id; a wrong one is refused with the template's own list.”
    • namestring“The project's name in the file.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • import_quotecreates or changes datadescribed as changing data

    “Turns a supplier's or builder's quote the reader has, prices and all, into a My Project file, as the site's Quote to Estimate does, and checks its own arithmetic.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    6 inputs, 1 required
    • quotestringrequired“The quote's text, one item to a line, with its prices.”
    • supplierstring
    • currencystring“The quote's currency symbol, where the quote does not show it.”
    • marketstring“Optional.”
    • namestring
    • detailstring“full (the default): the whole answer.”
  • diagnose_symptomon 1 other serverreads or searches

    “Matches one building defect described in plain words, such as a crack, a damp patch, a water leak or a tripping breaker, to the site's diagnosis pages, and returns the candidate causes, what tells th…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs, 1 required
    • symptomstringrequired“What the reader sees, hears or smells, in their own words: "my breaker keeps tripping when the kettle is on".”
    • marketstring“Optional.”
    • limitinteger“How many diagnoses at most.”
    • detailstring“full (the default): the whole answer.”
  • solve_backwardscalculates or converts

    “Works out how far one amount of material goes, such as 40 bags of concrete or 24 gallons of paint: the area it covers and the size of slab, room, deck or wall that is, as the site's Solve Backwards p…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    6 inputs, 1 required
    • pagestring“A Solve Backwards page's slug, such as wall-paint, drywall-sheets, bricks, concrete-bags, ready-mix-concrete.”
    • querystring“Or what the reader has, in words ("sheets of drywall", "bags of concrete"), when the slug is not known.”
    • havenumber or string or objectrequired“How much the reader has: a count for counted things (20, "20 sheets"); a measure with its unit for paint, concrete, soil ("24 gal", "2 m3", {"value": 90, "unit…”
    • systemstring“The page's system; it sets the market's product (a 4 × 8 ft sheet in imperial).”
    • settingsobject“Optional: another calculator input, with its unit (a slab's thickness "4 in", coats 3).”
    • detailstring“full (the default): the whole answer.”
  • market_documentsreads or searches

    “Finds which family of building codes or standards governs one kind of work in one market (US, Canada, UK or Australia, or a country mapped to one), who publishes it and the site's standards page.”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs, 1 required
    • marketstringrequired“US, CA, UK, AU or INTL — or a country's name ("England", "Canada"); a country the site has no market for answers as INTL.”
    • subjectstring“The work, in words: "kitchen wiring", "stair handrails", "gas boiler flue".”
    • calculatorstring“Or a calculator's slug: the subjects its own sources name.”
    • detailstring“full (the default): the whole answer.”
  • translate_termon 1 other server

    “Says one building-trade word in US, Canadian, UK and Australian usage, such as plasterboard (drywall in the US) or skirting (baseboard): each market's word, how close each is, false-friend warnings, …”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs, 1 required
    • termstringrequired“A trade word or phrase as one market says it, a brand name said for the product, or a misspelling: "plasterboard", "gyprock", "casing", "skirting", "eavestroug…”
    • fromstring“The market whose word it is, where known.”
    • tostring“The market to say it in.”
    • detailstring“full (the default): the whole answer.”
  • create_supplier_quote_requestcreates or changes datadescribed as changing data

    “Creates a request for quote from a materials list or bill of materials (the lines of a takeoff, house, plan or calculation, or the reader's own): Markdown to paste, a CSV, the site's link a merchant …”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    6 inputs, 1 required
    • itemsarrayrequired
    • projectstring“The project's name, as the merchants will see it.”
    • currencystring“The currency prices are asked in; left out, the market's.”
    • marketstring“Optional.”
    • notestring“A note to the merchants: delivery address area, dates, access.”
    • detailstring“full (the default): the whole answer.”
  • get_benchmarkon 17 other serversreads or searches

    “Returns items of the Construction Quantities Benchmark, a CC BY 4.0 dataset of construction quantity questions built from the site's calculator test vectors: each with its inputs and a prompt in metr…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    3 inputs
    • pageinteger“Which page of the benchmark, from 1: each page holds the items of a few calculators, in slug order.”
    • calculatorstring“One calculator's items only, by its slug, such as concrete-calculator.”
    • detailstring“full (the default): the whole answer.”
  • measure_sketchcalculates or converts

    “Measures areas, perimeters and lengths from points read off a floor plan, sketch or photo (pixel coordinates) and one known reference (a figured dimension, an ID-1 card or an A4 or Letter sheet): sca…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    6 inputs, 2 required
    • shapesarrayrequired“The outlines and lines read off the image, in its pixels.”
    • referenceobjectrequired“ONE known size in the same image: a figured dimension, or an object of known size by its four corners.”
    • pixelErrornumber“How far any point may be off, in pixels: it sets the band.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • export_drawingon 1 other servercreates or changes datadescribed as changing data

    “Exports a Construction Canvas drawing (a template, shapes, a room layout, drawing commands, house figures or a canvas document) as DXF for CAD, with the site's CQ-* layers, and as SVG, one plan per l…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    12 inputs
    • houseobject“The House Estimator's form: the house drawn as the estimator draws it.”
    • commandsarray“Drawing commands, in order, on the canvas's blank drawing (one storey; the wall, partition, window and door types).”
    • documentobject“A Construction Canvas document (schema 1 to the canvas's current), opened and checked by the canvas's own opener.”
    • shapesarray“Simple shapes the assistant has read from the reader's words — a room, a deck, a patio, a bed, a path, a fence of legs and turns — compiled into the canvas's o…”
    • layoutobject“Rooms by name, size and which room each stands against, laid out on a grid: shared walls drawn once as partitions, every snap or move reported, and each room c…”
    • templatestring“A Construction Canvas template's slug (the template index lists them: single-room, deck, two-car-garage …): the drawing its page shows, in the reader's system,…”
    • variantstring“With template: one of its two "what changes if" variants, by id; a wrong one is refused with the template's own list.”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • formatsarray“dxf, svg, ifc (openBIM IFC4: one file for the whole drawing, every level, with quantity sets), or several; left out, dxf and svg.”
    • levelstring“One level by its id or name; left out, every level with something on its plan.”
    • detailstring“full (the default): the whole answer.”
  • layout_reinforcement

    “Lays out reinforcing bars in a rectangular slab or footing from the bar size, spacing and cover the engineer gives: bars each way, bar lengths, total length with lap, stock sticks, weight where the s…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    15 inputs, 4 required
    • elementenum“A slab, or a pad or strip footing, as a rectangle on plan.”
    • lengthnumber or string or objectrequired“Along x, with its unit.”
    • widthnumber or string or objectrequired“Along y, with its unit.”
    • covernumber or string or objectrequired“The cover to the bars on plan, as the engineer gives it.”
    • barSizestringrequired“As the engineer gives it: #4, 15M, N12, H12, T12 or 12 mm.”
    • spacingnumber or string or object“The spacing both ways, as the engineer gives it.”
    • lengthwiseobject“The bars running along the length (spaced across the width): a spacing of their own, or a count.”
    • widthwiseobject“The bars running along the width (spaced along the length): a spacing of their own, or a count.”
    • matsenum“One mat, or two (top and bottom) laid out alike.”
    • lapPercentnumber“The lap-splice allowance on the total; left out, the Rebar Calculator's own default.”
    • chairsobject“Count the bar supports too, from the supplier's support spacing.”
    • formatsarray“The drawing's files: svg, dxf or both (the default).”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • calculate_batchcalculates or converts

    “Runs up to 25 construction calculator calculations in one request, each a calculator slug or permanent id with its own input values, and returns each run's full answer in order (metric and US units, …”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    5 inputs, 1 required
    • itemsarrayrequired“The runs, 1 to 25, each one calculator and its inputs; answered in the same order.”
    • systemstring“The unit system for every run that does not name its own.”
    • marketstring“The market for every run that does not name its own.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”
  • update_projecton 37 other serverscreates or changes datadescribed as changing data

    “Changes a My Project project carried in a state token (cqp1.…, from a project file answer): add or remove a room or space, change a dimension, add or remove a takeoff or calculator line, change a roo…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs, 1 required
    • tokenstringrequired“A project state token from a project-file answer or an earlier update.”
    • operationsarray“The changes, applied in order (0 to 20); none returns the project as the token holds it.”
    • fileboolean“true: the updated My Project file as well.”
    • detailstring“full (the default): the whole answer.”
  • classify_itemscalculates or converts

    “Groups a materials list, bill of materials, takeoff, plan or project (lines, calculator slugs or a project state token) by CSI MasterFormat 2018 division, by the site's own keyword rule over each lin…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    4 inputs
    • tokenstring“A project state token: its lines are grouped.”
    • linesarray“Lines of a takeoff, plan, house, drawing or bill: each a label, and the calculator slug where known.”
    • calculatorsarray“Calculator slugs or permanent ids.”
    • detailstring“full (the default): the whole answer.”
  • resolve_idon 2 other serversreads or searches

    “Resolves a permanent Craft Quantities id (such as cq-c0412), a current or earlier slug, or a craftquantities.com address to the page as it is today: its kind, current slug, slug history, page link an…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    3 inputs, 1 required
    • refstringrequired“A permanent id (cq-c0412), a current or earlier slug, or a craftquantities.com address.”
    • kindenum“Only pages of this kind.”
    • detailstring“full (the default): the whole answer.”
  • plan_programmecalculates or converts

    “Builds a construction programme (build schedule, Gantt) from a project's labour hours: tasks by trade, stage and level in the usual order of work, each its hours over the crew and working day given, …”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    14 inputs
    • tokenstring“A project state token (cqp1.…) from a project-file answer or an update: the project whose lines are put in order.”
    • fileobject“A My Project file (the backup a project-file answer returns, or one the reader exported): its active project's lines and any hours typed on them.”
    • takeoffsarray“Whole-job takeoffs, each an id and its measurements, as a project file takes them.”
    • drawingobject“A Construction Canvas drawing (a template, a house form, shapes, drawing commands or a canvas document), as a project file takes it; its levels set the level-b…”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • marketstring“Optional.”
    • crewinteger“People in each trade's crew, unless named in crews.”
    • crewsobject“People in a trade's crew, by trade id (carpentry, drywall, electrical, roofing …).”
    • hoursPerDaynumber“Working hours in a crew's day.”
    • startDatestring“Optional first day (YYYY-MM-DD): the working days are then given dates and a calendar file is returned.”
    • workDaysarray“The days of the week worked, 1 Monday to 7 Sunday.”
    • daysOffarray“Dates not worked (holidays, a shutdown), YYYY-MM-DD.”
    • namestring“The project's name, for the files.”
    • detailstring“full (the default): the whole answer.”
  • optimise_cutscalculates or converts

    “Optimises a cut list: pieces of given lengths cut from the stock lengths a merchant sells (timber, studs, joists, rafters, rebar, trim), or rectangles nested on sheets (plasterboard, drywall, plywood…”

    Publisher declares: read-only yes · destructive no · idempotent yes · open-world no

    11 inputs, 2 required
    • kindenumrequired“linear: lengths cut from stock lengths (studs, plates, joists, rafters, bars, trim, boards).”
    • materialenum“What is cut, for the market's stock lengths or sheet sizes, saw kerf and grain when they are left out: timber (the default for linear), rebar or casing; plaste…”
    • piecesarrayrequired“The cut list: up to 200 lines and 3000 pieces (1500 for sheets) in all.”
    • stockarray“linear: the stock lengths on offer, each in any number, with units ("4.8 m", "16 ft").”
    • sheetsarray“sheet: the sheet sizes on offer (the plan takes the one that buys the least area).”
    • kerfnumber or string or object“The saw's kerf, charged on every piece (both ways on a sheet).”
    • minOffcutnumber or string or object“linear: the shortest offcut worth keeping; shorter ones count as waste.”
    • rotateboolean“sheet: whether pieces may turn a quarter (no grain or strength axis to keep).”
    • systemstring“The unit system inputs left out open in, and the one the page link opens in.”
    • inputUnitsstring“Send "base" to pass bare numbers on dimensioned inputs in base units (m, m², L, kg …), as the published test vectors are written.”
    • detailstring“full (the default): the whole answer.”

Each quoted sentence is the first sentence of the publisher’s own description. The kind of tool and the “changes data” mark are our AI model’s reading of that description, not something we tested: two differently worded runs had to agree, otherwise no label is shown, and nobody has checked them by hand. A tool without the “changes data” mark is described as only reading, searching or calculating, or the two runs did not agree. No tool was called. Read the publisher’s full description before relying on it. “Publisher declares” lists the hints the server itself sends with the tool (MCP annotations: read-only, destructive, idempotent, open-world); they are the publisher's claims, not checked by us. Inputs are the parameters in the tool's own input schema: name, declared type, whether it is required, and the first sentence of its description. Read 2026-10-23.

How well are its tools described?

Features #4 and #5

How clearly this server's own tool descriptions say what a tool does, and how consistent its tool list is. The first part is an AI model's yes/no reading of each description; the second part is counted. We do not turn it into a grade.

Descriptions

AI reading of each description

Says what the tool does
100% of 38 tools
Says what it returns
100% of 38 tools
States limits, defaults or errors
8% of 37 tools
Says when to use it
0% of 37 tools
Items covered per tool
2.1 of 4 on average

Counted from the listing

Parameters with a description
93% of 220
Tools with a description
100% of 38
Typical description length
283 characters

The tool set

Counted from the listing

Tools
38
Size of the list
about 77,279 tokens for an agent to load (characters ÷ 4)
Naming
35 of 38 names use snake_case

AI reading: easy to mix up

No pair found.

The AI items cover 38 of 38 tools: for a tool where two differently worded runs disagreed, that item is left out. They were not checked by hand, and no tool was called. “Easy to mix up” means two tools whose names or descriptions overlap without saying how they differ; the AI found none. We do not rate whether the tool set is complete or whether side effects are spelled out, because our AI reading of those was not reliable enough.

How do I add it to my client?

Config from the registry entry

From the remote endpoint (Streamable HTTP)

We connected to this URL on 2026-10-23 (a read-only session: no tool was called).

Add to CursorAn install link in the format Cursor documents, holding the Cursor config below.

Claude Desktop or claude.ai
Settings → Connectors → Add custom connector, then paste:
https://api.craftquantities.com/mcp
Cursor · .cursor/mcp.json in a project, or ~/.cursor/mcp.json
{
  "mcpServers": {
    "engine": {
      "url": "https://api.craftquantities.com/mcp"
    }
  }
}
VS Code · .vscode/mcp.json
{
  "servers": {
    "engine": {
      "type": "http",
      "url": "https://api.craftquantities.com/mcp"
    }
  }
}
VS Code (command line) · Bash or zsh terminal (macOS, Linux)
code --add-mcp '{"name":"engine","type":"http","url":"https://api.craftquantities.com/mcp"}'
Claude Code
claude mcp add --transport http engine https://api.craftquantities.com/mcp
Try it in the MCP Inspector · runs on your machine, opens in your browser · Node 22.19+
npx @modelcontextprotocol/inspector@2.11.0 --server-url https://api.craftquantities.com/mcp --transport http
  • The server runs on the operator's infrastructure; it may ask you to sign in when you first connect.
  • The MCP Inspector lists the server's tools, resources and prompts; a tool you call there runs for real.

Built from the server's registry entry with each client's documented format (checked 2026-10-14; the Cursor link and the VS Code command 2026-10-19; the MCP Inspector command 2026-10-21). Values in < > are yours to fill in; this page never contains a key. Where the server needs a setting the entry does not declare, it can still fail to start.

Does the registry listing match what we found?

Feature #6

The registry verifies a package once, when it is published, and does not re-check it. A difference below is about the listing, not a judgement of the publisher.

Registry saysWe foundResultSource · date
Remote endpoint api.craftquantities.com/mcpSession openedmatchesour test · 2026-10-23
No credential declared as requiredOpened a session without any credentialmatchesour test · 2026-10-23

Choosing

Record checks

Public records · not a safety rating

1 of 2 record checks met · 7 do not apply

  • Not ranked by downloads: a remote server publishes no download figure
  • Not ranked by stars: no public GitHub repository
  • MetRegistry entry is active and says how to run itActive, with a package or a remote address.
  • Not metSource repository link opensThe registry entry gives no repository link.
  • Does not applyRepository is not archivedNo public GitHub repository to read.
  • Does not applyCode pushed to the repository in the 90 days before our checkNo public GitHub repository to read.
  • Does not applyRepository publishes a security policy (SECURITY.md)No public GitHub repository to read.
  • Does not applyPackage names its licence with a standard (SPDX) identifierRemote server: it ships no package.
  • Does not applyThe version the registry lists can be installed and is not withdrawnRemote server: it ships no package.
  • Does not applynpm package carries build provenance (attestation)Remote server: it ships no package.
  • Does not applyNo known critical or high advisory in the package or its dependenciesRemote server: it ships no package.

Read from public records only: the registry entry, npm/PyPI, GitHub and advisory databases, checked 2026-10-22. No tool was called. Only “met” and “not met” are counted, so the total differs between servers; a check that does not apply or that we could not run is listed, never counted against it. It is not a safety rating. How each check works · Leaderboards

Common questions about com.craftquantities/engine

Answered from the data above

Is com.craftquantities/engine safe to install?

We do not rate servers as safe or unsafe. 1 of its 2 applicable record checks are met (facts from public records, each listed on this page). What the records show: 10 of its tools describe changing data (our AI model's reading of the descriptions). These are facts with their sources on this page, not a safety guarantee, and we did not run its tools.

Is com.craftquantities/engine free to use?

Its website (craftquantities.com/api/) describes a free pricing model. This is an AI-classified reading of the page on 2026-10-23, so check the page itself before relying on it.

Does com.craftquantities/engine need an API key or sign-in?

It opened a session without any credential on 2026-10-23. The registry entry declares no required credential; no declaration is not a guarantee.

Has com.craftquantities/engine been security tested?

Partly. 4 of the 15 checks that apply to it were exercised. We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security verdict is published before verification.

What can com.craftquantities/engine do?

It lists 38 tools. In our AI model's reading of their descriptions (two runs had to agree, nobody checked it by hand), they include tools that read or search, create or change data and calculate or convert. We did not call any tool, so this describes the text, not the behaviour.

Can com.craftquantities/engine change or delete data?

10 of its tools say in their description that they create, edit, delete, send or run something (our AI model's reading). We did not call any tool, so we cannot say what actually happens.

Found this page useful?

Anonymous · no sign-in

A quick, anonymous reaction — no account, no email. One per kind from your browser. The tally updates when the page is next refreshed, and it is only a rough count, never a safety rating or a measured number of people.

Similar servers

Same topic · AI-read

Active servers whose topic is also “other” and that have at least one tool of the same kind; most kinds in common first, then most GitHub stars. The topic and the tool kinds are an AI model's reading of the publishers' descriptions, not checked by hand. Similar is not a recommendation.

Compare with another server

Side by side: registry entry, our read-only session, the tools and the 18 classification fields. Same values as each page; no score.

Security testing

What did we test, and what did we leave out?

18 checks · features #1, #2

Not probed (we call no server's tools)

We connected and read what the server declares, but did not call its tools: ProtocolProbe calls no server's tools for anything it publishes. This is our choice, not a block by the server. No security score is given; a check we did not run is never counted as passed.

The 18 checks at a glanceour test · 2026-10-23
  1. Inventory: exercised
  2. Hidden instructions: exercised
  3. Real execution: not run · our policy
  4. Secret leak: not run · nothing to check it against
  5. Internal addresses: not run · our policy
  6. Unconfirmed changes: not run · our policy
  7. Bad input: not run · our policy
  8. Model requests: not run · nothing to check it against
  9. Sensitive questions: not run · nothing to check it against
  10. Folder boundary: not run · our policy
  11. Log leaks: not run · nothing to check it against
  12. Hidden content: exercised
  13. Fake assistant turns: exercised
  14. Token passthrough: not applicable
  15. Token audience: not applicable
  16. Sign-in redirect: not run · our policy
  17. Consent handling: not testable from outside
  18. Sign-in metadata: not applicable

4 exercised11 not run (reason given)3 not applicable

Each check ends in exactly one state: exercised, not run (with the reason), or not applicable (with the reason). 4 of the 15 checks that apply to it were exercised. We do not publish security-check outcomes for named servers.

Exercised · 4
  • 1Inventory
    tool-list    Reads the declared tools, resources and prompts.exercised
  • 2Hidden instructions
    description-poisoning    Looks for hidden instructions in tool descriptions.exercised
  • 12Hidden content
    audience-hiding    Checks resources that hide content from the user.exercised
  • 13Fake assistant turns
    fake-assistant-turn    Checks prompts that pose as the assistant's own words.exercised
Not run, with the reason · 11
  • 3Real execution
    real-execution    Calls a tool and checks what really happens.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
  • 4Secret leak
    canary-leak    Plants a fake secret and checks whether it leaks.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
  • 5Internal addresses
    ssrf    Checks whether a tool can be steered to internal addresses.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
  • 6Unconfirmed changes
    write-without-confirmation    Checks whether tools that change data act without asking.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
  • 7Bad input
    error-handling    Sends bad input and watches how the server answers.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
  • 8Model requests
    sampling    Checks whether the server asks the client's model to act for it.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
  • 9Sensitive questions
    elicitation-sensitive-data    Checks whether the server asks users for sensitive data.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
  • 10Folder boundary
    root-boundary    Checks whether the server reaches outside the folders it was given.This check calls the server's tools. ProtocolProbe calls no server's tools for anything it publishes; an operator can run this check on their own server with our self-test command.not run · our policy
  • 11Log leaks
    logging-side-channel    Checks whether log messages carry data they should not.This check needs at least one successful tool call to have something to check, and no tool was called.not run · nothing to check it against
  • 16Sign-in redirect
    open-redirect    Checks the sign-in redirect for abuse.Testing the sign-in redirect means sending probes to the operator's sign-in service, which we do not do.not run · our policy
  • 17Consent handling
    confused-deputy    Checks consent handling when one service acts for another.Depends on the operator's own consent screen, which differs per server and cannot be tested from outside.not testable from outside
Does not apply to this server · 3
  • 14Token passthrough
    token-passthrough    Checks whether the server forwards a user's token to other services.The server opened a session without sign-in, so there is no token flow to check.not applicable
  • 15Token audience
    token-audience-validation    Checks whether tokens meant for another service are accepted.The server opened a session without sign-in, so there is no token flow to check.not applicable
  • 18Sign-in metadata
    oauth-url-scheme    Checks the published sign-in metadata for unsafe URLs.No sign-in (OAuth) metadata is published, so there are no sign-in addresses to check.not applicable

Source: our own test, 2026-10-23, mcp-runtime-engine@0.1.0. Which checks count and why follows our published scoring model.

What happened during the test?

Feature #8

The steps in order, as the test record holds them.

  1. 0 msStarted a read-only session with the server's remote endpoint
  2. 1,257 msConnected after 0 redirects. No credential was sent or needed.
  3. Read the inventory: 38 tools, 0 resources, 4 prompts.
  4. 2,605 msFinished: 4 checks exercised.

Reference

How is it classified?

18 fields

One value per field, each with its source. Fields written by AI models are marked. A field with no value says why.

TopicAI-classified
other
AI-classified (Gemini + Claude agreed) · 2026-10-23
Pricing modelAI-classified
free
read from craftquantities.com/api/ · 2026-10-23

“Construction Calculator API — Free JSON Craft Quantities”

Programming language
does not apply
no existing GitHub repository (server declares no repository link, so there is nothing to fetch)
Hosting type
remote (hosted by the publisher)
registry · 2026-10-23
MCP capability
prompts, resources, tools
our test · 2026-10-23
Transport
streamable HTTP
registry · 2026-10-23
Required credentials
none declared
registry · no declaration is not a guarantee
Package registry
does not apply
remote-only server: no package is shipped, so there is no package registry
Freshness
0–30 days
registry updatedAt · 2026-10-23
Lifecycle status
active
registry · 2026-10-23
License class
does not apply
remote-only server: ships no package, so there is nothing to look up in a package registry
Integrity hash
does not apply
remote-only server: ships no package, so there is nothing to look up in a package registry
Signature / provenance
does not apply
remote-only server: ships no package, so there is nothing to look up in a package registry
Dependency advisories
does not apply
ships no package, so there are no dependencies to audit
Popularity
does not apply
remote-only server: ships no package, so there is nothing to look up in a package registry
Publisher signals
not stated
no readable GitHub owner to describe
Maintenance
does not apply
server declares no repository link, so there is nothing to fetch
Environment
the publisher's infrastructure
where it runs, from the hosting type

“Not stated” means the source did not state it; “does not apply” means it does not apply to this kind of server; “our limit” means our own lookup failed. A linked value opens the directory filtered to the same value.

Cite or correct this page

Sources and corrections

Suggested citation

ProtocolProbe. “com.craftquantities/engine: MCP server record.” Data checked 2026-10-23. https://protocolprobe.com/mcp/servers/com.craftquantities/engine

Figures are valid for the date shown. Our facts on this page are CC BY 4.0: reuse them with a link and the check date. Quoted text (the publisher’s descriptions, website quotes, tool names) is not ours to license.

As JSON: this record in the API · API documentation.

Badge for your README

ProtocolProbe: 1 of 2 record checks met

[![ProtocolProbe](https://protocolprobe.com/api/v1/badge/com.craftquantities/engine)](https://protocolprobe.com/mcp/servers/com.craftquantities/engine)

It shows this server's record-check count: facts from public records, no tool called. It is not a security rating or a pass. It links here and updates after each data reload.

Something wrong, or is this yours?

If a fact here is wrong, tell us and we will re-check it. If you operate this server, you can run our checks on it yourself with the free self-test command; we call no server’s tools ourselves for anything shown here.

Write to hello@protocolprobe.com · corrections log · methodology