Set card Custom Field value

trello.setCardCustomFieldValue sets one typed value on a card.

automations/set-trello-card-custom-field-value.automation.ts

import { automation, onDashboardRun } from "automate.ax"
import { trello } from "automate.ax/trello"

export default automation("Set Trello card estimate", () => {
  onDashboardRun({ title: "Set Trello card estimate" })
  trello.setCardCustomFieldValue({
    card: "card-id",
    customFieldId: "custom-field-id",
    value: { number: "8", type: "number" },
  })
})

Provide card, customFieldId, and a value matching the field definition:

{ type: "checkbox", checked: boolean }
{ type: "date", date: Date | ISO 8601 timestamp with an offset }
{ type: "list", optionId: string }
{ type: "number", number: string }
{ type: "text", text: string }

Number values remain strings so Trello’s decimal representation is preserved. Optional second argument { account } selects a Trello binding. Returns Signal<{ cardId: string; customFieldId: string; value: TrelloCustomFieldValue }>.

Built-in triggers

Built-in actions

Runtime utilities

Integrations

Set card Custom Field value