---
title: "/ContactCustomFields"
slug: "contactcustomfields-2"
updated: 2025-10-24T20:45:50Z
published: 2025-10-24T22:09:07Z
canonical: "guide.youraspire.com/contactcustomfields-2"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://guide.youraspire.com/llms.txt
> Use this file to discover all available pages before exploring further.

# /ContactCustomFields

Post/ContactCustomFields

SecurityHTTPType bearer

Bearer Authorization Token

Header parametersapi-versionstring | null

Query parametersapi-versionstring | null

Body parameters<select class='api-response-data' aria-label='Media type'><option value='1cc3aacc-d287-478f-bab8-e71b80695a0b'>application/json</option>
</select>object  ContactCustomFieldDefinitionIDinteger  (int32)    RequiredMinimum1.0Maximum2147483647.0
ContactIDinteger  (int32)    RequiredMinimum1.0Maximum2147483647.0
ColumnValuestring   | null  Min length0Max length2000

Responses200<select class='api-response-data' aria-label='Media type'><option value='3f2fd3e6-4ecb-4b49-ab57-997358fefa01'>application/json</option>
</select>integer  (int32)