---
title: "List custom field definitions"
method: GET
path: "/v1/custom-fields"
tags: ["Custom Fields"]
---

# List custom field definitions

`GET /v1/custom-fields`

Returns all custom field definitions. Optionally filter by profile.

## Query parameters

- `profileId` string

## Response `200`

List of custom field definitions

- object
  - `success` boolean
  - `fields` object[]
    - `id` string
    - `name` string
    - `slug` string
    - `type` 'text' | 'number' | 'date' | 'boolean' | 'select'
    - `options` string[]
    - `createdAt` string, date-time

## Other responses

- `400` — Invalid profileId format
- `401` — Unauthorized

---

[API](https://skmtc.net/zernio/apis/zernio-api.md) · [All operations](https://skmtc.net/zernio/apis/zernio-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/zernio/zernio-api/versions/51932b099b2f/schema)