Standard types

Every standard type Jadpo has, 259 of them, from A to Z. jadpo help <Type> prints the same page in your terminal. For why a type you want may not be on the list, see How standard types are named, and what is left out.

By group

About standard types

How standard types are named, and what is left out

A standard type's name says exactly what it is, and a type you might look for may be part of another or left for your app to define.

What every standard type can do

Every standard type comes with the same baseline of operations, so once you know how one type is built, read, sent, stored and shown, you know them all.

How a standard value is sent, stored and shown

A standard value keeps its currency, unit and precision wherever it goes into or out of your program.

Packages use the standard types

When you declare a type with the same shape as a standard type, the compiler reports the error type.standard_exists and points you at the standard type.

Changing a standard type's encoding

Upgrading Jadpo never makes your stored data unreadable.

A release that adds a standard type

When a Jadpo upgrade adds a standard type with a name your app already uses for a type of its own, your app never breaks silently.

A to Z

A B C D E F G H I J L M N O P Q R S T U V W Y Z

Type	What it is	Group
A
`AbaRoutingNumber`	A US bank's routing number: nine digits with a check digit.	Money and banking
`Allergen`	One of the 14 allergens a UK or EU food label must name: `milk`, `celery` and so on.	Health
`AltText`	What an image shows, for someone who can't see it.	Media and visual
`Angle`	An angle: `90deg` or `1.5rad`.	Physical quantities
`ApiKey`	A key for an API: up to 512 characters with no spaces.	Security
`Area`	An area: `12sqm` or `2ha`.	Physical quantities
`AspectRatio`	Width to height in whole numbers: `16:9`.	Media and visual
`AudioCodec`	An audio format as browsers name it: `mp4a.40.2`, `opus`.	Media and visual
B
`BankAccount`	A bank account to pay into or take from, in any country.	Money and banking
`Barcode`	What a barcode encodes, and which kind of barcode it is.	Commerce and logistics
`BasisPoints`	A count of hundredths of a percent: 25 basis points is 0.25%.	Money and banking
`BearerToken`	An access token sent as `Authorization: Bearer`.	Security
`Bearing`	A compass direction: degrees clockwise from true north, from 0 to 360.	Geospatial
`Bic`	A bank's identifier code, also called a SWIFT code: 8 or 11 characters.	Money and banking
`Bitrate`	Data per second: `100Mbps`.	Maths and data
`BloodGlucose`	A blood sugar level, shown `5.5 mmol/L`.	Health
`BloodPressure`	A blood pressure reading: `120/80 mmHg`.	Health
`BloodType`	A person's blood group: `O-`, `AB+` and so on.	Health
`BookingReference`	A booking's six-character reference: `X7K9QZ`.	Travel
`BoundingBox`	A rectangle on a map, given by its four sides.	Geospatial
C
`CabinClass`	The cabin a seat is sold in: `economy`, `premium_economy`, `business` or `first`.	Travel
`CalendarDate`	A day on the calendar, with no time or zone: `2026-10-25`.	Time and calendar
`CalendarEvent`	A calendar event, as a calendar app reads one: a title, and its days or its times.	Time and calendar
`CalendarPeriod`	An amount of calendar time in years, months and days: `P1Y2M10D`.	Time and calendar
`CallingCode`	A country's telephone code with its `+`: `+44`.	Places
`CardBin`	The first 6 or 8 digits of a card number, which name its issuer.	Money and banking
`CardBrand`	A card scheme: `visa`, `mastercard`, `american_express` and so on.	Money and banking
`CardExpiry`	The month a payment card runs to, written `2028-12`.	Money and banking
`Carrier`	A shipping company by its two-to-four-letter code: `UPSN`, `MAEU`.	Commerce and logistics
`CefrLevel`	A language ability level, from `A1` to `C2`.	Other with a published standard
`Certificate`	An X.509 certificate, the kind that secures a website.	Security
`ChatMessage`	One message in a conversation with an AI model: who wrote it and what it says.	AI
`ChatRole`	Who wrote a message in a conversation with a model: `system`, `user`, `assistant` or `tool`.	AI
`Cidr`	A range of IP addresses: `192.0.2.0/24`.	Web and network
`Circle`	A centre and a distance around it.	Geospatial
`ClothingSize`	A clothing size in its system, as the label writes it: `UK 10`, `US M`.	Commerce and logistics
`ClothingSizeSystem`	Which system a clothing size is in: `UK`, `EU` or `US`.	Commerce and logistics
`Colour`	A colour, written `#1e6fd9`, or `#1e6fd980` when it isn't fully opaque.	Media and visual
`Concentration`	A mass in a volume: `5mgL` or `1gL`.	Physical quantities
`ContainerImage`	A container image's whole name: `docker.io/library/nginx:1.27`.	Software
`ContainerNumber`	A shipping container's number, checked by its check digit: `CSQU3054383`.	Commerce and logistics
`ContentRating`	An age rating and the body that gave it: `BBFC 12A`.	Media and visual
`ContentRatingScheme`	A body that rates films or games for age: `BBFC`, `MPA`, `PEGI` or `ESRB`.	Media and visual
`Continent`	A continent, as the United Nations groups the world: `europe`, `asia`.	Places
`Cookie`	A cookie as a server sets it: `SID=31d4d96e; Path=/; Secure; HttpOnly`.	Web and network
`Country`	A country, written as its two-letter code: `GB`.	Places
`CountrySubdivision`	A state, province or other part of a country, written as its code: `GB-ENG`, `US-CA`.	Places
`Crs`	A coordinate reference system, by its EPSG code: `EPSG:27700`.	Geospatial
`Currency`	A currency, by its three-letter code: `GBP`.	Money and banking
`Current`	An electric current: `500mA`.	Physical quantities
`Cve`	A security vulnerability's id: `CVE-2021-44228`.	Software
D
`DataSize`	An amount of data: `5MB` or `4KiB`.	Maths and data
`DateRange`	The days from one date to another, both included: `2026-10-01/2026-10-31`.	Time and calendar
`Digest`	A content digest, with its algorithm: `sha256:` and 64 hexadecimal digits.	Software
`Dimensions`	A box's length, width and height.	Commerce and logistics
`Discount`	An amount off a price, or a percentage off it.	Money and banking
`Doi`	A digital object identifier, naming a paper or a dataset: `10.1038/nphys1170`.	Software
`DomainName`	A domain name: `example.com`.	Web and network
`DosageInstruction`	How to take a medicine: a dose, a route and how often.	Health
`Dose`	An amount of a medicine: `500 mg` or `5 ml`.	Health
`DrivingLicenceNumber`	A driving licence's number, with the country that issued it.	Tax and identity numbers
`Duration`	An exact length of time, to the millisecond: 90 minutes is `PT1H30M`.	Time and calendar
E
`Ean13`	The 13-digit barcode number on most products outside North America.	Commerce and logistics
`EastingNorthing`	Map coordinates on a projected grid: an easting, a northing and which grid.	Geospatial
`Email`	An email address, checked as one.	People and contact
`EmailWithName`	An email address with the name shown beside it: `Mary Somerville <mary@example.com>`.	People and contact
`Embedding`	A list of numbers with the AI model that made it.	Maths and data
`Emoji`	One emoji: `😀`, `👍🏽`.	Web and network
`EncryptedValue`	A value sealed by `crypto.encrypt`.	Security
`Energy`	An amount of energy: `2kWh` or `250kcal`.	Physical quantities
`EpcRating`	A UK energy certificate's band: `A` to `G`.	Other with a published standard
`ExchangeRate`	A rate between two currencies at a moment in time.	Money and banking
`ExifOrientation`	How a stored photo must be turned to look upright, as a camera records it.	Media and visual
F
`FamilyName`	A person's family name, one line as they write it.	People and contact
`Feature`	A shape with your own data attached, in GeoJSON's form, as a map library takes one.	Geospatial
`FeatureCollection`	A list of features, all with the same shape and properties types, as a map layer.	Geospatial
`FileName`	A file's name that every common file system takes: `report.pdf`.	Software
`FilePath`	A portable file path: `/var/lib/acme/uploads`, `reports/2026/october.csv`.	Software
`FileType`	A file's media type: `image/png`, `application/pdf` and so on.	Web and network
`FlightNumber`	A flight's code: `BA123`.	Travel
`Fraction`	An exact fraction as written: `3/4`.	Maths and data
`FrameRate`	Frames a second, as an exact fraction: `25/1`, or `30000/1001` for 29.97.	Media and visual
`Frequency`	How often something happens per second: `50Hz` or `2.4GHz`.	Physical quantities
G
`Geohash`	A rectangle on Earth, as up to 12 letters and digits: `gcpvj0duq`.	Geospatial
`Geometry`	Any one of the six shapes: a point, a path, an area or a set of any of those.	Geospatial
`GitRef`	A git branch, tag, full ref or commit hash: `main`, `refs/tags/v1.2.0`.	Software
`GivenName`	The name a person goes by, one line as they write it.	People and contact
H
`H3Cell`	A cell of Uber's H3 grid of hexagons, as 15 hexadecimal digits: `8928308280fffff`.	Geospatial
`Hash`	A SHA-256 digest: the 32 bytes `hash.sha256` gives.	Security
`HeartRate`	A heart rate: `72bpm`.	Health
`Hmac`	An HMAC-SHA-256 tag, such as a webhook's signature.	Security
`Hostname`	A host: a domain name or an IP address.	Web and network
`HsCode`	A customs code for a kind of goods: six to ten digits, such as `090111` for coffee.	Commerce and logistics
`Html`	HTML that's always safe to put in a page or an email.	Text formats
`HttpHeaderName`	An HTTP header's name, in lower case: `content-type`.	Web and network
`HttpMethod`	An HTTP method a route is written with: `GET`, `POST`, `PUT`, `PATCH` or `DELETE`.	Web and network
`HttpStatus`	An HTTP response's status code, from 100 to 599.	Web and network
I
`IataAirline`	An airline's two-character code: `BA`, `U2`.	Travel
`IataAirport`	An airport's three-letter code, as tickets print it: `LHR`.	Travel
`Iban`	An international bank account number, with its check digits: `GB29NWBK60161331926819`.	Money and banking
`IcaoAirport`	An airport's four-letter code, as air traffic control uses it: `EGLL`.	Travel
`Icd10Code`	A diagnosis's ICD-10 code, with its dot: `I21.9`.	Health
`IdempotencyKey`	A key a client sends so that a retried request isn't applied twice.	Software
`IdentityDocument`	An identity document: its kind, the country, its number and when it expires.	Tax and identity numbers
`IdentityDocumentKind`	What kind of identity document one is: `passport`, `identity_card`, `driving_licence` or `residence_permit`.	Tax and identity numbers
`Illuminance`	How much light falls on a surface: `500lx`.	Physical quantities
`ImageDimensions`	An image's width and height in pixels: `1920x1080`.	Media and visual
`Imei`	A mobile device's 15-digit IMEI.	Web and network
`Incoterm`	A rule saying who pays for what in international shipping: `FOB`, `DDP` and so on.	Commerce and logistics
`Insets`	Space inside each edge, written in CSS's order: `8 16 8 16`.	Media and visual
`Instant`	One moment in time, the same everywhere in the world: `2026-10-25T09:30:00Z`.	Time and calendar
`InstantRange`	The moments from a start up to, but not including, an end.	Time and calendar
`InterestRate`	A yearly rate of interest, and the basis it is quoted on: `5.5% APR`.	Money and banking
`InterestRateBasis`	What an interest rate is quoted as: `aer`, `apr` or `flat`.	Money and banking
`InvoiceNumber`	An invoice's number: up to 200 characters, as your own system writes it.	Money and banking
`IpAddress`	An IPv4 or IPv6 address: `192.0.2.1`, `2001:db8::1`.	Web and network
`Isbn`	A book's number, in its 13 digits with no hyphens.	Commerce and logistics
`Isin`	A securities identification number, naming a share or a bond: `US0378331005`.	Money and banking
`IsoWeek`	A numbered week of a year, as ISO 8601 counts them: `2026-W43`.	Time and calendar
J
`JsonPointer`	A pointer into a JSON document: `/foo/0`.	Web and network
`Jurisdiction`	Where a law applies: a country, or a part of one such as England.	Other with a published standard
`Jwk`	A public key that a token is checked against, as an identity provider publishes it.	Security
`Jwt`	A signed token: three parts joined by `.`.	Security
`JwtClaims`	What a checked token says: who issued it, who it is about and when it expires.	Security
L
`Language`	A language, written as its two-letter code: `en`.	Places
`Latitude`	Degrees north of the equator, from -90 to 90: `51.5072`.	Geospatial
`LawfulBasis`	Your lawful reason for using personal data, under GDPR: `consent`, `legitimate_interests` and so on.	Other with a published standard
`Lei`	A Legal Entity Identifier, the global ID of a company in financial reporting.	Money and banking
`Length`	A length or distance: `5km`, `45cm`, `3inch` or `2metre`.	Physical quantities
`LineString`	A path of two points or more, in order.	Geospatial
`LocalDateTime`	A date and a clock time with no zone: `2026-10-25T09:30:00`.	Time and calendar
`Locale`	A language and region together, which decides how dates and numbers look: `en-GB`.	Places
`LocalisedText`	The same text in several languages: `{"en-GB": "Rye loaf", "fr-FR": "Pain de seigle"}`.	Text formats
`LocalTime`	A time on the clock, with no date or zone: `09:30:00`.	Time and calendar
`LogLevel`	How severe a log record is: `TRACE`, `DEBUG`, `INFO`, `WARN`, `ERROR` or `FATAL`.	Software
`Longitude`	Degrees east of the prime meridian, from -180 to 180: `-0.1276`.	Geospatial
`LotNumber`	A manufacturing batch: up to 20 characters, such as `ABC123`.	Commerce and logistics
M
`MacAddress`	A network card's hardware address: `AC-DE-48-00-00-80`.	Web and network
`MapTile`	One square of a web map at one zoom level: `10/511/340`.	Geospatial
`Markdown`	Text written in Markdown, the plain-text format for bold, headings and lists.	Text formats
`MaskedCardNumber`	What you may keep of a card once its number is gone: the brand and the last four digits.	Money and banking
`Mass`	A mass or weight: `250g`, `2.5kg` or `500mcg`.	Physical quantities
`ModelId`	An AI model by its provider and name: `openai/gpt-4o`.	Other with a published standard
`Money`	An amount of money: a whole number of a currency's smallest units, and the currency.	Money and banking
`Month`	A month of the year: `january` to `december`.	Time and calendar
`Mpan`	A UK electricity supply's 13-digit number.	Other with a published standard
`Mprn`	A UK gas supply's number: 6 to 10 digits.	Other with a published standard
`MultiLineString`	Several paths, at least one, that belong together.	Geospatial
`MultiPoint`	A set of points, at least one, that belong together.	Geospatial
`MultiPolygon`	Several areas, at least one, that belong together.	Geospatial
N
`Nationality`	A person's nationality, named by country code: `GB`.	People and contact
`NetworkPort`	A TCP or UDP port, from 1 to 65535.	Web and network
`NhsNumber`	An NHS number, the patient identifier in England, Wales and the Isle of Man: ten digits.	Tax and identity numbers
O
`OAuthScope`	One permission an OAuth token grants: `todos:read`.	Security
`OidcClaims`	Who an identity provider says signed in.	Security
`OneTimeCode`	A code a person types from an app, a text or an email: six to eight digits.	Security
`OpeningHours`	When a place is open each week, and the days that differ.	Time and calendar
`Orcid`	A researcher's ORCID iD: `0000-0002-1825-0097`.	Other with a published standard
P
`PackageUrl`	A package's address, the same across package managers: `pkg:npm/left-pad@1.3.0`.	Software
`PaperSize`	A paper size: `A4`, `Letter` and so on.	Media and visual
`PassportNumber`	A passport's number, with the country that issued it.	Tax and identity numbers
`Password`	A password as a person types it: 8 to 256 characters.	Security
`PasswordCheck`	What checking a password says: `wrong`, `correct` or `correct_outdated`.	Security
`PasswordHash`	A password's hash, ready to store.	Security
`PasswordPolicy`	The rules a password must meet: how short, how long, and whether to check breached lists.	Security
`PaymentCardNumber`	A payment card's full number, checked by its check digit.	Money and banking
`PaymentReference`	The reference a payer sees on a UK bank payment: up to 18 characters.	Money and banking
`Percentage`	A share of something, written `20%`, where `20%` is the same as 0.20.	Maths and data
`PersonName`	A person's name: a given name and, if they have one, a family name.	People and contact
`PhoneExtension`	An internal extension dialled after a phone number: up to 20 digits.	People and contact
`PhoneNumber`	A phone number with its country code, written `+447400123456`.	People and contact
`Point`	A position on Earth: its latitude, its longitude and, if you know it, its height.	Geospatial
`Polygon`	An area on a map, with any holes it has.	Geospatial
`PostalAddress`	A postal address in any country.	People and contact
`PostalCode`	A postal code or ZIP code, such as `SW1A 1AA`.	People and contact
`Power`	A rate of energy use: `3kW`.	Physical quantities
`Pressure`	A pressure: `1013hPa`.	Physical quantities
`Price`	An amount, and whether it includes tax.	Money and banking
`ProblemDetails`	An HTTP API's error body, as other APIs often send one.	Web and network
`PublicKey`	An Ed25519 public key: 32 bytes as Base64url.	Security
`PushToken`	The address of a device for push notifications, from Apple's or Google's service.	Web and network
Q
`Quarter`	A quarter of a calendar year: `2026-Q4`.	Time and calendar
R
`Range`	The values of one ordered type from a start up to, but not including, an end.	Maths and data
`Rating`	A rating on its own scale: `4.5/5`.	Commerce and logistics
`Ratio`	One number to another, as written: `16:9`.	Maths and data
`Rect`	A rectangle by its top-left corner and its size, written like an SVG `viewBox`: `0 0 300 200`.	Media and visual
`RecurrenceRule`	When something repeats, in the calendar standard's own text.	Time and calendar
`RegularExpression`	A pattern for matching text: `[A-Z]{2}[0-9]{2}`.	Software
`RelativeUrl`	An address relative to another: `../images/logo.png`, `?page=2`.	Web and network
`RichText`	A structured document: a list of paragraphs, headings, quotes and list items.	Text formats
`RichTextBlock`	One block of a `RichText`: a paragraph, a heading, a quote or a list item.	Text formats
`RichTextMark`	A mark on some text: `strong`, `emphasis`, `code`, `underline` or `strike_through`.	Text formats
`RichTextSpan`	A run of text in a block, with its marks and any link.	Text formats
`RouteOfAdministration`	How a medicine is taken: `oral`, `intravenous` and so on.	Health
S
`SecretText`	Any other secret text, up to 8,192 characters.	Security
`SemanticVersion`	A software version: `1.2.3-alpha.1+build.5`.	Software
`SerialNumber`	One item's own serial number: up to 20 characters, such as `SN-0042a`.	Commerce and logistics
`ShoeSize`	A shoe size in its system, as the box writes it: `UK 7.5`, `EU 42`.	Commerce and logistics
`ShoeSizeSystem`	Which system a shoe size is in: `UK`, `EU` or `US`.	Commerce and logistics
`Sku`	A seller's own stock code: up to 64 characters with no spaces, such as `AB-1234-XL`.	Commerce and logistics
`Slug`	A URL-safe name: lower-case words joined by hyphens, `autumn-sale`.	Web and network
`SnomedConcept`	A SNOMED CT concept's number, the clinical term a health system records: `22298006`.	Health
`SoundLevel`	How loud something is: `60dB`.	Physical quantities
`SpanId`	One step's id in a trace: 16 lower-case hexadecimal digits, not all zero.	Software
`SpdxLicence`	A software licence as SPDX writes it: `MIT OR Apache-2.0`.	Software
`Speed`	A speed: `30mph` or `100kmh`.	Physical quantities
`Sscc`	The 18-digit number on a pallet or shipping container's label.	Commerce and logistics
`SubtitleCue`	A timed caption: when it starts and ends, and its text.	Media and visual
T
`TaxId`	A taxpayer's identification number, with the country that issued it.	Tax and identity numbers
`TaxRate`	A rate of tax, as a percentage that can't be below zero: `20%`.	Money and banking
`Temperature`	A temperature: `21degC`, `70degF` or `300kelvin`.	Physical quantities
`TemperatureDifference`	The gap between two temperatures, so 5 °C warmer isn't the same as 5 °C.	Physical quantities
`Tenure`	How land in England and Wales is held: `freehold`, `leasehold` or `commonhold`.	Other with a published standard
`TextDirection`	Which way text runs: `ltr` or `rtl`.	Places
`Timecode`	An address of one frame in a video: hours, minutes, seconds and frames.	Media and visual
`TokenCount`	How many tokens a prompt or an answer holds, by its model's own count.	AI
`TokenUsage`	The tokens one call to a model used: what it read, what it wrote and what its cache served.	AI
`TotpSecret`	The shared secret behind an authenticator app.	Security
`TraceId`	A whole trace's id: 32 lower-case hexadecimal digits, not all zero.	Software
`TraceParent`	A `traceparent` header's value, which links a request to its trace.	Software
`TrackingNumber`	A parcel's tracking number, with its carrier: `UPSN 1Z999AA10123456784`.	Commerce and logistics
U
`UkAccountNumber`	A UK bank account number: eight digits, with any leading zeros kept.	Money and banking
`UkCompanyNumber`	A UK company's number at Companies House: `00445790` or `SC123456`.	Tax and identity numbers
`UkNationalInsuranceNumber`	A UK National Insurance number: `AB123456C`.	Tax and identity numbers
`UkSortCode`	A UK bank's sort code, as six digits: `089999`.	Money and banking
`UkUtr`	A UK Unique Taxpayer Reference: ten digits.	Tax and identity numbers
`Ulid`	A sortable unique identifier: 26 capital letters and digits.	Software
`UnitPrice`	A price per amount of something, such as £2.50 per kilo.	Money and banking
`UnitQuantity`	How much of something: a count of items, or an amount by mass, volume, length or area.	Commerce and logistics
`UnLocode`	A place in trade and transport: a country's code and three letters or digits, `GBLON`.	Places
`UnNumber`	A dangerous good's UN number: `UN1203`.	Other with a published standard
`UpcA`	The 12-digit barcode number on products in the US and Canada.	Commerce and logistics
`Uprn`	A Unique Property Reference Number, the identifier for a property in Great Britain.	People and contact
`Url`	An `http://` or `https://` address with a host.	Web and network
`UrlPath`	A URL's path, starting with `/`: `/products/42`.	Web and network
`UsEin`	A US Employer Identification Number, for a business: nine digits.	Tax and identity numbers
`UserAgent`	What an HTTP client says it is: `curl/8.7.1`.	Web and network
`Username`	A login handle: lower-case letters, digits, `_`, `.` and `-`, up to 64 of them.	People and contact
`UsSsn`	A US Social Security number: nine digits.	Tax and identity numbers
`UtcOffset`	A fixed gap from UTC, in minutes: `+05:30`.	Time and calendar
`UtmParameters`	Where a visit came from, as marketing links carry it: source, medium and campaign.	Web and network
`Uuid`	A universally unique identifier, in lower case with hyphens.	Software
V
`VatNumber`	A VAT registration number, with its country's code at the front: `GB980780684`.	Tax and identity numbers
`Vector`	A list of numbers, as an AI model's embedding holds them.	Maths and data
`VehicleRegistration`	A vehicle's registration mark with its country: `GB AB12 CDE`.	Commerce and logistics
`VersionRange`	A range of versions: `^1.2.3`, `>=1.0.0 <2.0.0`.	Software
`VideoCodec`	A video format as browsers name it: `avc1.42001E`, `vp09.00.10.08`.	Media and visual
`VideoResolution`	A video's frame size in pixels: `1920x1080`.	Media and visual
`Vin`	A vehicle identification number: 17 characters with no `I`, `O` or `Q`.	Commerce and logistics
`Voltage`	An electrical voltage: `230V`.	Physical quantities
`Volume`	A volume: `500ml` or `2litre`.	Physical quantities
W
`WebAuthnCredential`	A passkey a person registered.	Security
`WebOrigin`	A web origin: the scheme, the host and any port, `https://example.com`.	Web and network
`Weekday`	A day of the week: `monday` to `sunday`.	Time and calendar
`WritingScript`	A writing system, written as its four-letter code: `Latn`, `Jpan`.	Places
Y
`Year`	A calendar year: `2026`.	Time and calendar
`YearMonth`	One month of one year: `2026-10`.	Time and calendar
Z
`Zone`	A time zone, written as its name: `Europe/London`.	Places
`ZonedTime`	A moment seen on the clock in one place: `2026-10-25T09:30:00+00:00[Europe/London]`.	Time and calendar