---
title: "Create field"
method: POST
path: "/v1/fields"
tags: ["Fields"]
---

# Create field

`POST /v1/fields`

Create a custom field definition. Requires a private API key.

## Request body

- CreateFieldBody
  - `key` string, required
  - `name` string, required
  - `description` string
  - `type` 'text' | 'number' | 'boolean' | 'date' | 'richtext' | 'select' | 'multiselect', required
  - `required` boolean
  - `options` FieldOptionInput[] — Required for select and multiselect fields. Not allowed for other field types.
    - `value` string, required
    - `label` string, required

## Response `201`

Field created successfully

- FieldResponse
  - `field` Field, required
    - `id` string, required
    - `key` string, required
    - `name` string, required
    - `description` string, nullable, required
    - `type` 'text' | 'number' | 'boolean' | 'date' | 'richtext' | 'select' | 'multiselect', required
    - `required` boolean, required
    - `position` integer, required
    - `options` FieldOption[], required
      - `id` string, required
      - `value` string, required
      - `label` string, required
      - `position` integer, required
      - `createdAt` string, date-time, required
      - `updatedAt` string, date-time, required
    - `createdAt` string, date-time, required
    - `updatedAt` string, date-time, required

## Other responses

- `400` — Invalid request body
- `403` — API key missing the required field write scope
- `409` — Field with this key already exists
- `500` — Server error

---

[API](https://skmtc.dev/marblecms/apis/marble-api.md) · [All operations](https://skmtc.dev/marblecms/apis/marble-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/marblecms/marble-api/revisions/ce3a22722c0e/schema)