---
title: "Create a user property"
method: POST
path: "/api/2/taxonomy/user-property"
tags: ["Taxonomy"]
---

# Create a user property

`POST /api/2/taxonomy/user-property`

## Request

- Base URL: `https://amplitude.com`
- URL: `https://amplitude.com/api/2/taxonomy/user-property`
- Auth: HTTP basic

## Request body `application/x-www-form-urlencoded`

- object
  - `user_property` string, required
  - `description` string
  - `type` string

## Response `200`

User property created.

- object

## Other responses

- `400`: Invalid request. Check that JSON query parameters are well formed and that special characters are URL encoded.
- `401`: Missing or invalid credentials. Send HTTP Basic auth with the project API key as the username and the secret key as the password.
- `429`: Concurrent or hourly rate limit exceeded for the project. The response identifies which limit was hit. Up to 5 concurrent requests are allowed across Amplitude REST endpoints.

## Changes

- **2026-10-14** `e475ad97669a`: 3 info
  - added the media type `*/*` for the response with the status `400`
  - added the media type `*/*` for the response with the status `401`
  - added the media type `*/*` for the response with the status `429`

[Operation history](https://skmtc.dev/amplitude/apis/amplitude-public-apis/changes/api/2/taxonomy/user-property/post.md)

---

[API](https://skmtc.dev/amplitude/apis/amplitude-public-apis.md) - [All operations](https://skmtc.dev/amplitude/apis/amplitude-public-apis/llms.txt) - [OpenAPI document](https://skmtc.dev/amplitude/apis/amplitude-public-apis/revisions/e475ad97669a?raw)