Every capability
Ordered by level: primitives at the bottom of the graph, workflows at the top. Each one carries its own tests, at least 8 per function.
Suites — the capabilities a kind of app is built from: accounting, payroll, an online shop, a clinic…
Collection: React form elements — accessible form components for React, and the pure helpers they use.
Level 0 primitive
charts.color
Hex colours to RGB and back, and sRGB channels to linear light and back, identically in every language.
A group of 4:
parse_hex, to_hex, srgb_to_linear, linear_to_srgb
charts.contrast
WCAG 2.x contrast ratio between two colours, and which text colour reads best on a background.
A group of 2:
contrast_ratio, readable_text_color
charts.extent
The minimum and maximum of a series as [min, max], skipping gaps (null), or null when there is no value.
extent in Python
collections.chunk
Split a list into consecutive batches of at most n items, in order; the last batch may be short.
chunk in Python
crypto.constant-time-equal
Compare two byte strings in time that does not depend on where they differ, for checking MACs and hashes.
constant_time_equal in Python
crypto.hmac-sha256
HMAC-SHA256 of a message under a secret key (RFC 2104, RFC 4231), in pure code that also runs in the browser.
hmac_sha256 in Python
crypto.pbkdf2-sha256
PBKDF2 with HMAC-SHA256 (RFC 8018): derive a key from a password and salt, slowly, fast enough for a login request.
pbkdf2_sha256 in Python
crypto.sha256
The SHA-256 digest of a byte string (FIPS 180-4), in pure code that also runs in the browser.
sha256 in Python
dates.add-days
Shift an ISO date by a whole number of days, forwards or backwards, with exact calendar arithmetic.
add_days in Python
dates.add-months
Add calendar months to an ISO date, clamping to the month end: 31 Jan + 1 month is 28 or 29 Feb.
add_months in Python
dates.day-of-week
The ISO 8601 day of the week for a date: 1 is Monday through 7 is Sunday.
day_of_week in Python
dates.days-between
Calendar days from one ISO date to another, signed: negative when the second date is earlier.
days_between in Python
dates.is-leap-year
Whether a year is a Gregorian leap year: every 4th, except centuries, except every 400th.
is_leap_year in Python
dates.overlap
Days two date ranges have in common, with the end of each range stated as inclusive or exclusive.
overlap_days in Python
dates.quarter
Calendar quarter and fiscal quarter of a date, with the fiscal year and quarter date ranges, for any start month.
quarter in Python
dates.week-number
ISO 8601 week number and week-numbering year of a date: weeks start Monday, week 1 holds the first Thursday.
week_number in Python
education.academic-year
The academic year and term a date falls in: 1 September to 31 August by default, terms from the caller.
academic_year in Python
encoding.base64
Bytes to base64 and base64url text and back (RFC 4648), with strict decoding, identically in every language.
A group of 4:
base64_encode, base64_decode, base64_url_encode, base64_url_decode
encoding.hex
Bytes to lowercase hexadecimal text and back (RFC 4648 base16), strictly, identically in every language.
A group of 2:
hex_encode, hex_decode
encoding.utf8
Text to UTF-8 bytes and strictly back (RFC 3629), so hashing and signing see the same bytes in every language.
A group of 2:
utf8_encode, utf8_decode
geo.bounding-box
Latitude/longitude bounding box that contains every point within a distance of a centre point.
bounding_box in Python
geo.distance
Great-circle distance in metres between two latitude/longitude points (haversine), to the millimetre.
distance in Python
geo.point-in-polygon
Whether a latitude/longitude point lies inside a polygon (ray casting; the boundary counts as inside).
point_in_polygon in Python
health.age-in-months Unreviewed
Age in completed months and days on a given date, for paediatric charts and doses; month ends handled like birthdays.
age_in_months in Python
health.bmi Unreviewed
Adult body mass index (kg/m², 1 decimal place) and its NICE/WHO weight category.
bmi in Python
health.bsa Unreviewed
Body surface area in m² by the Mosteller and the DuBois & DuBois formulas, to 2 decimal places.
body_surface_area in PythonLevel 1 generic concept
money.split-even
Split an amount into n near-equal parts that add back up to exactly the whole.
split_even in Python
agri.field-area
Field area in square metres, hectares and acres from a boundary polygon of latitude/longitude points.
field_area in Python
agri.growing-degree-days
Growing degree days (thermal time) from daily min/max temperatures, a base and an optional upper cap.
growing_degree_days in Python
agri.seed-rate
Seed rate in kg/ha from target plants per m², thousand-grain weight and expected establishment.
seed_rate in Python
agri.spray-mix Unreviewed
Sprayer tank mix: tank fills, and product and water per full and part tank, for an area, water volume and dose.
spray_mix in Python
agri.stocking-rate
Stocking rate: livestock units and LU per hectare from animal numbers, by a published LU coefficient table.
stocking_rate in Python
agri.yield-per-hectare
Crop yield per hectare and per acre from harvested quantity and field area in any area unit, exactly, as decimal text.
yield_per_hectare in Python
auth.bearer-token
The token from an HTTP Authorization header of the form "Bearer <token>" (RFC 6750), or null if it has none.
parse_bearer_token in Python
auth.jwt
Sign, verify and decode HS256 JSON Web Tokens (RFC 7519): signature, algorithm and exp/nbf/iat checked with leeway.
A group of 3:
sign_jwt, verify_jwt, decode_jwt
auth.normalise-email
Trim an email address and lower-case its domain for storage and lookup, or null if it is not a plausible address.
normalise_email in Python
banking.faster-payments-limit
Whether a Faster Payment fits the scheme maximum, the bank's per-payment limit and what is left of its daily limit.
faster_payments_check in Python
banking.savings-aer
AER (annual equivalent rate) from a gross nominal rate and how often interest is paid, to two decimal places.
savings_aer in Python
charity.donation-matching
Employer match on a donation: a ratio in basis points, limited by a per-donor cap and a programme budget.
donation_match in Python
charity.fundraising-ratio
Cost to raise £1 and charitable spend ratio for a charity, in exact basis points.
fundraising_ratios in Python
charity.gift-aid-eligibility
Whether a UK donation qualifies for Gift Aid: declaration, enough tax paid, and the donor benefit limits.
gift_aid_eligibility in Python
charity.regular-giving-schedule
Collection dates for a regular gift: monthly, quarterly or annual on a day, clamped to short months, after a lead time.
regular_giving_schedule in Python
charts.downsample
Reduce a long series to a few points that keep its visual shape, by Largest-Triangle-Three-Buckets (LTTB).
downsample in Python
charts.format
Axis and label text for charts: tick numbers, SI prefixes (1.2k, 3.4M), percentages, dates and money.
A group of 5:
format_tick, format_si, format_percent, format_date, format_money_tick
charts.histogram-bins
Bin values into histogram bins on round edges, by Sturges' rule, Freedman-Diaconis, or a fixed width.
histogram_bins in Python
charts.interpolate-color
The colour at a point along a sequential or diverging ramp, mixed in OKLab so steps look even; hex in, hex out.
interpolate_color in Python
charts.palette
A categorical palette of n colour-blind-safe colours for chart series: Okabe-Ito or Paul Tol's bright scheme.
palette in Python
charts.scale
Map data values onto screen positions and back: linear, log, time, band and point scales, and nice domains.
A group of 7:
linear_scale, invert_linear, nice_domain, log_scale, time_scale, band_scale, point_scale
charts.ticks
Axis ticks: a round step (1, 2 or 5 x 10^k), the ticks on it, and calendar ticks from days to years.
A group of 4:
tick_step, nice_ticks, time_tick_interval, time_ticks
collections.dedupe-by-key
Remove records that share a key value, keeping the first or the last of each, in input order.
dedupe_by_key in Python
collections.diff
Compare two lists of records by key: which were added, which removed, and which changed and in what fields.
diff_by_key in Python
collections.group-by-key
Group records by the value at one key, preserving input order inside each group.
group_by_key in Python
collections.paginate
Slice a list into a 1-based page and report the totals an API response needs.
paginate in Python
collections.search-text
Filter records by a case-insensitive substring match across named fields, in input order.
search_text in Python
collections.sort-by
Stably sort records by one key, ascending or descending, with a total order across mixed types.
sort_by in Python
construction.brick-count
Bricks and mortar for a wall, openings subtracted, for UK standard 215 x 102.5 x 65 mm bricks with 10 mm joints.
brick_count in Python
construction.concrete-volume
Concrete for slabs, strip footings, pads and round columns: volume to the litre and an order rounded up to 0.1 m³.
concrete_volume in Python
construction.materials-area
Packs of tiles, paint, plasterboard or flooring to cover an area, with waste and coats, rounded up to whole packs.
materials_area in Python
construction.roof-pitch
Roof pitch in degrees, rafter length and roof slope area from span, rise and length.
roof_pitch in Python
construction.timber-length
Cutting list: which stock lengths to buy and which pieces to cut from each, allowing for saw kerf.
timber_cutting_list in Python
dates.add-business-days
Move a date forward or back by working days, skipping weekends and a caller-supplied holiday list.
add_business_days in Python
dates.age
Age in whole years on a given date, with 29 February birthdays ageing on 1 March in other years.
age in Python
dates.bank-holidays
UK bank and public holidays for a region and year, as published by gov.uk, including one-off holidays.
bank_holidays in Python
dates.business-days-between
Working days between two dates, excluding weekends and a caller-supplied holiday list.
business_days_between in Python
dates.day-count-fraction
Year fraction between two dates by ACT/365F, ACT/360, 30/360, 30E/360 or ACT/ACT ISDA, as an exact fraction.
day_count_fraction in Python
dates.month-boundaries
The first day, last day and length of the calendar month containing a date.
month_boundaries in Python
dates.recurrence
The next n dates of a repeating rule: monthly on a day, last weekday of the month, every k days or weeks, yearly.
recurrence in Python
education.attendance-rate
Pupil attendance and absence rates in basis points, with the DfE persistent and severe absence flags.
attendance_rate in Python
education.cpd-hours
CPD logged against a requirement for a rolling or fixed period: minutes counted, shortfall and days left.
cpd_hours in Python
education.degree-classification
UK honours degree class (First, 2:1, 2:2, Third) from module marks and credits, weighted by level.
degree_classification in Python
education.gpa
Grade point average on a 4.0 scale from letter grades and credit hours, weighted by credits and rounded once.
gpa in Python
education.grade-boundaries
Grade for a mark from the caller's boundary table: inclusive lower bounds, ungraded below the lowest.
grade_for_mark in Python
education.school-year-group
School year group from date of birth on a date, by UK nation: Reception to Year 13, P1 to S6, P1 to Year 14.
school_year_group in Python
energy.carbon-emissions
kgCO2e from kWh or litres of a fuel, using the UK government GHG conversion factors for the year.
carbon_emissions in Python
energy.degree-days
Heating and cooling degree days from daily mean temperatures and a base temperature, exact to 0.1.
degree_days in Python
energy.gas-kwh
Convert gas meter units (cubic metres or hundreds of cubic feet) to kWh with the calorific value and 1.02264 correction.
gas_kwh in Python
energy.meter-advance
Units consumed between two meter reads, counting the meter rolling over past all nines once.
meter_advance in Python
finance.ledger.journal-validate
Check a double-entry journal: debits equal credits, no zero or two-sided lines, one currency, well-formed account codes.
validate_journal in Python
finance.payment-terms-due-date
Invoice due date from payment terms: net N days, end of month, N days after month end, day N of next month.
payment_due_date in Python
fleet.cost-per-mile
Whole-life cost per mile of a vehicle, in tenths of a penny, from depreciation, fuel, maintenance, insurance and tax.
cost_per_mile in Python
fleet.emissions
Vehicle greenhouse gas emissions (grams CO2e) from fuel used or distance, using UK government DESNZ conversion factors.
fleet_emissions in Python
fleet.ev-charging-cost
Cost of an electric vehicle charge from the energy added, charger efficiency and power, and time-of-use tariff windows.
ev_charging_cost in Python
fleet.fuel-cost
Fuel cost of a trip from distance, fuel economy (UK or US mpg, or L/100km) and price per litre, exactly.
fuel_cost in Python
fleet.service-due
Next vehicle service by months or miles, whichever comes first, projecting the mileage date, with an overdue flag.
service_due in Python
form.character-count
The GOV.UK character count message for a text box: characters or words left or over a limit, with a threshold.
character_count in Python
form.date-parts
Check a date typed into day, month and year boxes, with GOV.UK's error messages and the boxes to mark in error.
validate_date_parts in Python
form.state TypeScript only
A form's state as a pure reducer: values, touched fields, validator errors and the submit, for useReducer.
Not available in Python
health.egfr Unreviewed
eGFR in mL/min/1.73 m² by the race-free CKD-EPI 2021 creatinine equation, from creatinine in µmol/L or mg/dL.
egfr_ckd_epi2021 in Python
health.gestational-age Unreviewed
Gestational age (weeks+days) and estimated due date from the last menstrual period by Naegele's rule, cycle-adjusted.
gestational_age in Python
health.nhs-number-format Unreviewed
Display an NHS number in the 3-3-4 format ("943 476 5919") after checking its modulus 11 check digit.
format_nhs_number in Python
health.waiting-time Unreviewed
NHS England referral-to-treatment (RTT) wait in days and weekly bands, with the 18-week breach flag.
rtt_waiting_time in Python
hospitality.occupancy-adr-revpar
Hotel occupancy, average daily rate (ADR) and revenue per available room (RevPAR) for a period.
occupancy_adr_revpar in Python
hospitality.recipe-scale
Scale a recipe to a new number of portions, tidying metric units (g to kg, mL to L) and rounding to kitchen precision.
scale_recipe in Python
hospitality.service-charge
A discretionary service charge on a bill's eligible lines, as a basis-point rate with explicit rounding.
service_charge in Python
hr.absence-bradford-factor
Bradford factor for a set of absence spells: spells squared times total days, which weights frequent short absences.
bradford_factor in Python
hr.length-of-service
Continuous service between two dates in completed years, months and days, counting both end dates.
length_of_service in Python
http.retry-after
Seconds to wait from an HTTP Retry-After header (delay-seconds or an HTTP date), or null if missing or malformed.
retry_after_seconds in Python
insurance.age-banding Unreviewed
Age at policy inception and the rating band it falls in, from a table of age bands.
age_band in Python
insurance.excess-apply Unreviewed
Claim payout after the compulsory and voluntary excess, capped at the policy limit.
apply_excess in Python
insurance.loss-ratio Unreviewed
Loss ratio, expense ratio and combined ratio in basis points, from earned premium, incurred claims and expenses.
loss_ratios in Python
inventory.eoq
Economic order quantity (Harris/Wilson): the order size that minimises ordering plus holding cost, in whole units.
economic_order_quantity in Python
inventory.pallet-fit
How many cartons fit per layer and per pallet (UK 1200x1000 or EUR 1200x800), within a height and weight limit.
pallet_fit in Python
inventory.reorder-point
Reorder point: demand over the supplier lead time, rounded up to whole units, plus safety stock.
reorder_point in PythonLevel 2 domain function
hospitality.bill-split
Split a restaurant bill evenly, by item or by share, exactly to the penny, with the service charge shared in proportion.
bill_split in Python
agri.fertiliser-application
Fertiliser product rate (kg/ha and total) to meet N, P2O5 and K2O targets from its analysis, limiting nutrient first.
fertiliser_application in Python
finance.proration
Split an amount into the part used and the part unused over a billing period, losing nothing.
prorate in Python
agri.feed-ration
Ration costing and dry matter intake from each feed's fresh weight, DM % and price per tonne, in exact money.
feed_ration in Python
agri.gross-margin
Enterprise gross margin (output less variable costs), in total and per hectare or per head, in exact money.
gross_margin in Python
agri.milk-price
Milk price per litre and payment from a contract's base price, butterfat/protein adjustments and bonuses.
milk_price in Python
auth.access-token
Issue an API's HS256 access token, read one from an Authorization header, and refuse revoked or superseded ones.
A group of 3:
issue_access_token, read_access_token, confirm_access_token
auth.login-throttle
Allow a login attempt or lock the account out, from its recent failed attempts, with the seconds until it may retry.
login_throttle in Python
auth.password-hash
Hash a password for storage as pbkdf2_sha256$iterations$salt$hash, verify one in constant time, and spot weak hashes.
A group of 3:
hash_password, verify_password, password_needs_rehash
auth.password-policy
Check a new password against a named policy (NIST SP 800-63B-4 by default): length, common passwords, name and email.
A group of 2:
password_policy, check_password
banking.bacs-processing-date
Bacs three-day cycle: input, processing and entry (arrival) dates for a submission, skipping weekends and bank holidays.
bacs_processing_dates in Python
banking.cheque-amount-words
The words and figures to write on a cheque: "One hundred and twenty pounds and fifty pence only", "£120.50".
cheque_amount_words in Python
banking.fees-cap
Apply a monthly fee cap to a list of account charges: charge up to the cap, waive the rest.
apply_fee_cap in Python
banking.overdraft-interest
Overdraft interest for a statement period from daily balances, with an interest-free buffer.
overdraft_interest in Python
charity.gasds
Gift Aid Small Donations Scheme top-up for a tax year: the £8,000 limit, the matching rule and community buildings.
gasds in Python
charity.gift-aid
Gift Aid a UK charity can claim on a donation: basic rate tax grossed up, 25p per £1 at 20%.
gift_aid in Python
charity.higher-rate-relief
A Gift Aid donor's extra tax relief at higher, intermediate, additional and top rates, by extending the tax bands.
higher_rate_relief in Python
charity.payroll-giving
UK Payroll Giving for one pay period: the donation comes off pay before PAYE, and the tax it saves the employee.
payroll_giving in Python
charity.restricted-funds
Allocate charity spending to restricted funds first, then unrestricted funds, never overdrawing a restricted fund.
allocate_fund_spend in Python
charts.axis
Axis geometry as data: tick positions, tick marks, label anchors and gridlines for number, time and category axes.
A group of 5:
axis_from_ticks, number_axis, time_axis, band_axis, grid_lines
charts.layout
Chart layout: the plot area inside margins, legend items wrapped into rows, and greedy label collision avoidance.
A group of 3:
plot_area, legend_rows, avoid_collisions
charts.shape
SVG path strings for lines, areas, steps, monotone curves, bars, arcs and pie slices, identical in every language.
A group of 7:
line_path, area_path, step_path, monotone_curve, bar_rects, arc_path, pie_angles
charts.stack
Stack several series for stacked bars and areas: on zero, normalised to 100%, or diverging around zero.
stack in Python
construction.cis-deduction
Construction Industry Scheme deduction (0, 20 or 30%) on the labour part of a subcontractor payment.
cis_deduction in Python
construction.day-rate-quote
A trade quote from labour days at a day rate, materials with a markup, and VAT.
day_rate_quote in Python
construction.payment-notice-dates
Construction Act default dates: payment due, payment notice, final date for payment and pay-less notice.
payment_notice_dates in Python
construction.retention
Retention held and released on a construction valuation: full rate, half at practical completion, none at the end.
retention in Python
construction.vat-reverse-charge
Whether the UK VAT domestic reverse charge applies to a construction supply, and the invoice wording.
domestic_reverse_charge in Python
dates.uk-tax-year
The UK personal tax year containing a date: 6 April to 5 April, with HMRC's label.
uk_tax_year in Python
education.fee-instalments
Tuition fee instalment schedule from a total, shares and due dates, exact to the penny.
fee_instalments in Python
education.student-loan-repayment
A graduate's student or postgraduate loan repayment for a tax year, as Self Assessment works it out.
student_loan_repayment in Python
education.timetable-clash
Find timetable clashes: overlapping sessions that share a room, a teacher or a student group, in a fixed order.
timetable_clashes in Python
education.weighted-grade
Weighted percentage across coursework and exam components, exact as a fraction, then rounded once.
weighted_grade in Python
energy.climate-change-levy
Climate Change Levy on a business supply of electricity, gas, LPG or solid fuel, at the main rate in force on the date.
climate_change_levy in Python
energy.estimate-read
Estimate a meter read for a date from the average daily consumption between two earlier reads, with rollover.
estimate_read in Python
energy.price-cap
Ofgem energy price cap unit rate and daily standing charge for a fuel and payment method on a date (GB average).
price_cap in Python
energy.solar-generation
Estimated annual solar PV generation by the MCS method: kWp x Kk x shade factor, per array and in total.
solar_generation in Python
energy.tariff-time-of-use
Cost half-hourly consumption against time-of-use rates: Economy 7 windows or Agile-style half-hourly prices.
time_of_use_cost in Python
energy.water-bill
Metered water and sewerage bill from two reads: volumetric charges, return to sewer, standing and surface water charges.
water_bill in Python
finance.accruals-prepayments
Split an invoice across accounting periods by days of service, for accruals, prepayments and deferred income.
allocate_to_periods in Python
finance.aged-debt
Aged debt report: open invoices bucketed as current, 1-30, 31-60, 61-90 and 90+ days overdue as at a date.
aged_debt in Python
finance.bank-reconcile-match
Match bank statement lines to ledger entries by exact amount, a date window and reference similarity, deterministically.
match_bank_lines in Python
finance.compound-interest
Compound interest accrued period by period in minor units, the way a statement is built.
compound_interest in Python
finance.depreciation-reducing-balance
Reducing-balance depreciation schedule at a fixed rate, writing off to the residual value in the final year.
reducing_balance_depreciation in Python
finance.depreciation-straight-line
Straight-line depreciation schedule whose charges sum exactly to cost less residual value.
straight_line_depreciation in Python
finance.early-payment-discount
Early settlement discount available on a payment date under "2/10 net 30" style terms, and the amount to pay.
early_payment_discount in Python
finance.fx-revaluation
Unrealised foreign exchange gain or loss on foreign-currency balances revalued at a period-end rate.
fx_revaluation in Python
finance.invoice.line-total
Net total for one invoice line: unit price by quantity, less a discount.
line_total in Python
finance.late-payment-interest
UK statutory late payment interest (8% over Bank Rate) and fixed compensation under the Late Payment Act 1998.
late_payment_interest in Python
finance.ledger.trial-balance
Trial balance from journal lines: debit or credit balance per account, and proof that debits equal credits.
trial_balance in Python
finance.margin
Profit on a sale with both the margin and the markup, so the two are never confused.
margin in Python
finance.markup-price
Selling price from a cost and a target margin or markup in basis points, with explicit rounding.
markup_price in Python
finance.tax.add-vat Unreviewed
Add VAT to a net amount using the rate in force on the date of supply.
add_vat in Python
finance.tax.remove-vat Unreviewed
Extract the VAT already included in a gross amount, using the rate in force on the date of supply.
remove_vat in Python
finance.tax.vat-flat-rate Unreviewed
UK VAT Flat Rate Scheme: VAT due on gross turnover at the sector's dated rate, limited cost rate and first-year 1% off.
flat_rate_vat in Python
finance.tax.vat-rate Unreviewed
Look up the VAT rate in force for a jurisdiction, category and date.
vat_rate in Python
finance.uk-bank-rate
Bank of England Bank Rate (base rate) in force on a date, from the Bank's official history since 2001.
uk_bank_rate in Python
fleet.company-car-bik Unreviewed
UK company car benefit in kind: appropriate percentage by CO2 and electric range, car and fuel benefit for a tax year.
company_car_bik in Python
fleet.drivers-hours Unreviewed
Check a driver's activities against GB/EU drivers' hours: breaks after 4.5h, daily, weekly and fortnightly driving.
check_drivers_hours in Python
fleet.mileage-allowance
HMRC approved mileage allowance payments for an employee's own vehicle: tax-free amount, taxable excess or relief.
mileage_allowance in Python
fleet.tachograph-rest Unreviewed
Check daily and weekly rest against GB/EU drivers' hours: 11h daily (9h reduced, 3+9 split), 45h weekly (24h reduced).
check_tachograph_rest in Python
fleet.vehicle-depreciation
A vehicle's current value from its cost, age and mileage, on retention curves the caller supplies, exactly.
vehicle_depreciation in Python
health.appointment-slots Unreviewed
Bookable appointment slots from clinic sessions, a slot length, breaks and existing bookings.
appointment_slots in Python
health.dose-weight-based Unreviewed
Weight-based dose (per kg) capped at a maximum single dose and rounded to a measurable volume, in exact micro-units.
weight_based_dose in Python
health.news2 Unreviewed
NEWS2 early warning score from one set of observations: parameter scores, aggregate and RCP clinical risk band.
news2_score in Python
health.qrisk-inputs-validate Unreviewed
Check a QRISK3 cardiovascular risk input set against the calculator's published ranges; does not compute risk.
validate_qrisk_inputs in Python
hospitality.allergen-matrix Unreviewed
Which of the 14 UK major allergens a dish contains or may contain, from its ingredients' declared allergens.
allergen_matrix in Python
hospitality.cancellation-charge
Cancellation fee for a booking from a policy of notice bands and the days of notice given.
cancellation_charge in Python
hospitality.gross-profit-menu
Menu gross profit (GP%) on the VAT-exclusive price, and the menu price that reaches a target GP.
A group of 2:
menu_gross_profit, menu_price_for_gp
hospitality.recipe-cost
Cost a recipe and each portion from ingredient quantities, pack sizes and pack prices, allowing for trim and waste.
recipe_cost in Python
hospitality.room-rate
Price a hotel stay night by night from the caller's seasonal, day-of-week rate table, less any length-of-stay discount.
room_rate in Python
hospitality.tourist-tax
Visitor levy (tourist tax) on an overnight stay: Edinburgh's 5%, Cardiff's per person per night, or a caller's own rule.
tourist_tax in Python
hospitality.tronc-allocation
Share a tips pool (tronc) between staff by hours worked, points, or hours times points, exactly to the penny.
tronc_allocation in Python
insurance.claim-reserve Unreviewed
Claim reserve history: paid, recovered, outstanding and incurred after each transaction, and the movement.
claim_reserve_history in Python
insurance.instalment-plan Unreviewed
Pay a premium by monthly instalments: deposit, flat credit charge, instalments exact to the penny, and the APR.
instalment_plan in Python
insurance.ipt Unreviewed
UK Insurance Premium Tax at the standard or higher rate in force on a date, added to or taken out of a premium.
insurance_premium_tax in Python
insurance.mid-term-adjustment Unreviewed
Additional or return premium for a mid-term policy change, pro rata on the days left, plus an admin fee.
mid_term_adjustment in Python
insurance.no-claims-discount Unreviewed
No-claims discount at renewal: earn a year, or step back after claims on the insurer's scale, with NCD protection.
next_no_claims_discount in Python
insurance.premium-proration Unreviewed
Return premium on mid-term cancellation, pro rata or on a short-period scale, with an optional minimum retained premium.
cancellation_return_premium in Python
insurance.rating-factors Unreviewed
Premium from a base rate times factor-table lookups, loadings and discounts, within minimum and maximum premiums.
rate_premium in Python
insurance.sum-insured-average Unreviewed
Average clause settlement for underinsurance: the loss times sum insured over value at risk, capped at the loss.
average_clause_settlement in Python
inventory.abc-classification
ABC classes by annual consumption value (Pareto), with configurable cut-offs such as 80/15/5 and deterministic ties.
abc_classification in Python
inventory.cycle-count-schedule
Cycle count schedule: spread each item's counts evenly over the working days of a period, by ABC class frequency.
cycle_count_schedule in Python
inventory.expiry-fefo
First-expiry-first-out pick list for a quantity across batches, skipping expired and short-dated stock.
fefo_pick in PythonLevel 3 business operation
auth.validate-login
Check a login form (email, password): the normalised email to look up, or a message for each field to fix.
validate_login in Python
auth.validate-password-change
Check a change-password form: current password given and correct, new one meeting the policy and different.
validate_password_change in Python
auth.validate-registration
Validate a sign-up form (email, password, name) in one call, with a message per field, in the browser and the API alike.
validate_registration in Python
charity.reclaim-batch
Gift Aid claim totals for a period from donation records: donor lines, aggregated small gifts, tax due.
gift_aid_claim_batch in Python
charts.bar-chart
Complete bar chart geometry as data, grouped or stacked: plot area, axes, gridlines, bar rectangles, colours, legend.
bar_chart in Python
charts.line-chart
Complete line chart geometry as data: plot area, number or date axes, gridlines, series paths, colours, legend.
line_chart in Python
charts.sparkline
A sparkline's SVG path and end marker from a series, fitted into a box, with gaps left as breaks.
sparkline in Python
construction.valuation
Interim valuation: gross value to date, retention, previous payments, amount due, VAT or reverse charge, and CIS.
interim_valuation in Python
energy.bill-calculate
Electricity or gas bill from two meter reads: energy, standing charge, Climate Change Levy and VAT.
calculate_energy_bill in Python
finance.credit-note.calculate
Credit note against an original invoice, by units or by amount, with VAT at the original tax point's rates.
calculate_credit_note in Python
finance.invoice.calculate
Calculate a complete invoice: line nets, VAT per line, totals and a VAT summary grouped by rate.
calculate_invoice in Python
finance.tax.vat-return Unreviewed
UK nine-box VAT return totals for a period from categorised sales and purchases (VAT Notice 700/12).
vat_return in Python