---
title: "Kit - Add Custom Field"
method: POST
path: "/kit/add_custom_field"
tags: ["kit"]
---

# Kit - Add Custom Field

`POST /kit/add_custom_field`

Add a custom field key-value pair to a kit.

## Request body

- object
  - `kit_id` string, required — Kit ID
  - `field` string, required — Custom field name
  - `value` string, required — Custom field value (use "REMOVE" to delete an existing field)

## Response `200`

Custom field added to kit

- object
  - `success` boolean, required — Whether the operation succeeded

## Other responses

- `400` — Bad request
- `401` — Unauthorized
- `403` — Forbidden. Insufficient permissions.
- `429` — Too many requests. Rate limit exceeded.
- `500` — Internal server error.

## Changes

- **2026-03-02** `fa53dd949b8e` — 4 breaking, 7 info
  - the request property `field` became required
  - the request property `kit_id` became required
  - the request property `value` became required
  - request property `value` list-of-types was narrowed by removing types `number` from media type `application/json`
  - …7 more
- **2024-04-22** `08cd9cfa14dd` — 1 breaking, 3 warning, 2 info
  - added required request body
  - deleted the `query` request parameter `field`
  - deleted the `query` request parameter `kit_id`
  - deleted the `query` request parameter `value`
  - …2 more
- **2024-04-19** `46ceda528000` — 2 breaking, 9 info
  - removed the request body
  - removed the media type `application/json` for the response with the status `200`
  - api operation id `post_kit_add_custom_field` removed and replaced with ``
  - added the new optional `query` request parameter `field`
  - …7 more

[Change history](https://skmtc.dev/skulabs/apis/skulabs-api/changes/kit/add_custom_field/post.md)

---

[API](https://skmtc.dev/skulabs/apis/skulabs-api.md) · [All operations](https://skmtc.dev/skulabs/apis/skulabs-api/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/skulabs/skulabs-api/revisions/4b5ec0ed78a6/schema)