Get custom object
/custom_objects/objects/{type_name}/{external_id}
Use this endpoint to return one custom object.

Custom Objects is currently in early access. Your workspace must be enabled before the Custom Objects API key permissions appear on Settings > API Keys.
Prerequisites
To use this endpoint, you need an API key with custom_objects.read.
Rate limit
This endpoint is in the Custom Objects read bucket with a default limit of 50 requests per minute.
Path parameters
The following table lists and describes the path parameters for the /custom_objects/objects/{type_name}/{external_id} endpoint.
| Parameter | Required | Data Type | Description |
|---|---|---|---|
type_name |
Required | String | Custom object type machine name |
external_id |
Required | String | Object identifier |
Example request
This section includes a sample path-parameter payload and a sample cURL request.
Sample request payload
Use this JSON object as a reference for the path parameters in this request.
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{
"type_name": "account",
"external_id": "acct-123"
}
Sample cURL request
This example retrieves the acct-123 account record and its stored attributes.
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curl --location --request GET 'https://rest.iad-01.braze.com/custom_objects/objects/account/acct-123' \
--header 'Authorization: Bearer YOUR_REST_API_KEY'
Response
This section includes a sample successful response and the response fields.
Example success response
The status code 200 could return the following response body.
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{
"custom_object": {
"type_name": "account",
"external_id": "acct-123",
"attributes": { "name": "Acme", "industry": "software" }
}
}
Response parameters
The following table lists and describes the fields in a successful response.
| Parameter | Required | Data Type | Description |
|---|---|---|---|
custom_object |
Required | Object | Returned custom object record |
custom_object.type_name |
Required | String | Custom object type machine name |
custom_object.external_id |
Required | String | Custom object identifier |
custom_object.attributes |
Required | Object | Object attributes keyed by field name |
Errors
The following table lists common errors for this endpoint and how to resolve them.
| Status | Cause | Guidance |
|---|---|---|
404 |
Type not found (custom-object-type-not-found) or object not found (custom-object-not-found) |
Confirm type_name and external_id both exist in the workspace. |
401 |
Missing or invalid REST API key | Verify the Authorization header uses Bearer YOUR_REST_API_KEY and that the key is active. |
403 |
API key lacks permission or request is blocked by allowlist | Confirm the key has custom_objects.read and that your source IP is on the key allowlist, if configured. |
429 |
Rate limit exceeded | Retry after X-RateLimit-Reset and reduce request frequency. |