type property. This type determines what value format the API expects when you create or update a card.
Always fetch the schema before writing to a board so you know the key and type for each field.
Field types
text
A plain text string.
number
A numeric value. Do not wrap in quotes.
money
A numeric value representing a dollar amount. Do not include currency symbols or commas.
date
An ISO 8601 date string.
datetime
An ISO 8601 datetime string with timezone.
boolean
true or false.
select
A single string value matching one of the field’s configured options exactly. Option values are case-sensitive.
multiselect
An array of strings, each matching a configured option exactly.
person
A single contact ID string referencing a contact in your company.
persons
An array of contact ID strings.
email
A valid email address string.
phone
A phone number string. Include country code for best compatibility.
url
A fully qualified URL string.
file
Files are attached via the Upload a file to a card endpoint, not via field keys in the card body.
Reading field values
When you fetch a card, field values are returned using the same key/value structure. Null or unset fields are returned asnull.