---
title: "Create a property definition"
method: POST
path: "/data_stream_property_definitions"
---

# Create a property definition

`POST /data_stream_property_definitions`

## Request body

- RecordPropertyDefinition
  - `id` integer
  - `key` string, required
  - `name` string, required
  - `type` 'number' | 'date' | 'datetime' | 'string' | 'boolean', required
  - `optional` boolean
  - `data_stream_key` string, required — Must match an existing DataStream.key

## Response `201`

Property definition created

- RecordPropertyDefinition
  - `id` integer
  - `key` string, required
  - `name` string, required
  - `type` 'number' | 'date' | 'datetime' | 'string' | 'boolean', required
  - `optional` boolean
  - `data_stream_key` string, required — Must match an existing DataStream.key

---

[API](https://skmtc.net/endclose/apis/end-close-api.md) · [All operations](https://skmtc.net/endclose/apis/end-close-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/endclose/end-close-api/revisions/613ceff68dc7/schema)