RudderStack Test API
10 minute read
This guide details the various endpoints of the Test API.
Overview
The RudderStack Test API offers two endpoints to verify successful event transformation and delivery for a given source-destination setup, without having to refer to the Live Events tab.
The Test API is currently not supported for RudderStack Open Source.
Also, some destinations like Apache Kafka, Google Pub/Sub, Google Sheets, etc. are not supported by this API. For the complete list, see the FAQ section below.
Prerequisites
- Set up a source-destination connection in RudderStack. See the Quickstart guide for detailed steps.
- Generate a workspace-level Service Access Token in your RudderStack workspace.
The workspace-level Service Access Token has Read permissions by default. You do not need to assign any resource permissions while generating the token.
Token permissions for legacy RBAC system
If you are on the legacy Permissions Management (RBAC) system, your workspace-level Service Access Token should have minimum Viewer permissions.
See this documentation for more information on generating the token.

API authorization
The Test API uses Basic Authentication for authenticating all requests.
If you’re using Postman, authenticate the API by including an empty string ("") as the username and your workspace-level Service Access Token as the password in the Authorization tab.
RudderStack recommends using:
- Service Access Tokens (SATs) for production use cases that require shared access to the services and resources across the organization or workspace.
- Personal Access Tokens (PATs) for testing a service/feature or personal use cases.
You can also pass your Service Access Token in the authorization header directly:
Authorization: Basic {Base64Encoded(:<SERVICE_ACCESS_TOKEN>)}An example is shown below:
- Username:
""(empty string) - Service Access Token:
<SERVICE_ACCESS_TOKEN> - Header:
Basic {Base64Encoded(:<SERVICE_ACCESS_TOKEN>)}
Verify that the Service Access Token is valid if you get an Invalid Authorization Header error.
Base URL
Use the base URL for your API requests depending on your region:
https://api.rudderstack.comhttps://api.eu.rudderstack.comVerify destination events
This request verifies if the test events are successfully transformed and delivered to the specified destination.
The/testDestinationendpoint does not require a source to be connected to the destination.
Path parameters

Query parameters
true to send the event to a destination that is disabled.See Verify events for disabled destinations.
Request body
See Supported message types for the accepted
type values.See Verification stages for details.
true to check if a user transformation is connected to the destination and return the transformed event.true to return the payload after it is transformed into a destination-specific format.true to send the event to the destination and return the destination’s response.Example request
POST /v0/testDestination/1zl4i0J8M8T7sozoLnueW46RVYe HTTP/1.1
Host: api.rudderstack.com
Content-Type: application/json
Authorization: Basic {Base64Encoded(:<SERVICE_ACCESS_TOKEN>)}
{
"message": {
"context": {
"traits": {
"firstName": "James",
"lastName": "Doe"
}
},
"type": "identify",
"userId": "abc@123.com"
},
"stage": {
"user_transform": true,
"dest_transform": true,
"send_to_destination": true
}
}curl --location --request POST 'https://api.rudderstack.com/v0/testDestination/1zl4i0J8M8T7sozoLnueW46RVYe' \
--header 'Content-Type: application/json' \
--header 'Authorization: Basic {Base64Encoded(:<SERVICE_ACCESS_TOKEN>)}' \
--data-raw '{
"message": {
"context": {
"traits": {
"firstName": "James",
"lastName": "Doe"
}
},
"type": "identify",
"userId": "abc@123.com"
},
"stage": {
"user_transform": true,
"dest_transform": true,
"send_to_destination": true
}
}'Example response
{
"destinationId": "1zl4i0J8M8T7sozoLnueW46RVYe",
"destination": "WEBHOOK",
"destinationName": "test-webhook-dest",
"data": [{
"user_transformed_payload": {
"error": "Transformation VersionID not found"
},
"dest_transformed_payload": [{
"version": "1",
"type": "REST",
"method": "POST",
"endpoint": "https://webhook.site/9d5e3e43-6c2b-4b84-be9f-0147347b4cdf",
"headers": {
"content-type": "application/json"
},
"params": {},
"body": {
"JSON": {
"context": {
"traits": {
"firstName": "James",
"lastName": "Doe"
}
},
"type": "identify",
"userId": "abc@123.com"
},
"JSON_ARRAY": {},
"XML": {},
"FORM": {}
},
"files": {}
}],
"destination_response": [{
"success": false,
"error": {
"message": "Token not found",
"id": null
}
}],
"destination_response_status": [
404
]
}]
}Verify events for disabled destinations
If the /testDestination endpoint is used to verify the events sent to a disabled destination, the API will return the following response:
{
"destinationId": "<destination_ID>",
"destinationName": "<destination_name>",
"error": "Destination with id <destination_ID> is disabled"
}A sample response highlighting the above error is shown below:
{
"destinationId": "1zl4i0J8M8T7sozoLnueW46RVYe",
"destinationName": "test-webhook-dest",
"error": "Destination with id 1zl4i0J8M8T7sozoLnueW46RVYe is disabled"
}To override this behavior and send the event to a disabled destination, you can call the /testDestination endpoint with the query parameter force=true:
https://api.rudderstack.com/v0/testDestination/<destination_ID>?force=trueVerify source events
This request verifies if the test events are successfully sent from the specified source and delivered to all connected destinations.
Note that:
- The
/testSourceendpoint requires the specified source to be connected to at least one destination.- The
/testSourceendpoint essentially calls the/testDestinationendpoint for each destination connected to that source and returns an array of responses.
Path parameters

Query parameters
true to send the event from a disabled source, or to a disabled destination.See Verify events from a disabled source and Verify events for disabled destinations for more information.
Request body
See Supported message types for the accepted
type values.See Verification stages for details.
true to check if a user transformation is connected to the destination and return the transformed event.true to return the payload after it is transformed into a destination-specific format.true to send the event to the destination and return the destination’s response.Example request
POST /v0/testSource/1zlmsBMe1dcPbu3u6NTZFUFBrNQ HTTP/1.1
Host: api.rudderstack.com
Content-Type: application/json
Authorization: Basic {Base64Encoded(:<SERVICE_ACCESS_TOKEN>)}
{
"message": {
"context": {
"traits": {
"firstName": "James",
"lastName": "Doe"
}
},
"type": "identify",
"userId": "abc@123.com"
},
"stage": {
"user_transform": true,
"dest_transform": true,
"send_to_destination": true
}
}curl --location --request POST 'https://api.rudderstack.com/v0/testSource/1zlmsBMe1dcPbu3u6NTZFUFBrNQ' \
--header 'Content-Type: application/json' \
--header 'Authorization: Basic {Base64Encoded(:<SERVICE_ACCESS_TOKEN>)}' \
--data-raw '{
"message": {
"context": {
"traits": {
"firstName": "James",
"lastName": "Doe"
}
},
"type": "identify",
"userId": "abc@123.com"
},
"stage": {
"user_transform": true,
"dest_transform": true,
"send_to_destination": true
}
}'Example response
[{
"destinationId": "1tIgXcaRnQDlBBtxlJMGGHFUWGb",
"destinationName": "salesforce",
"error": "Destination with id 1tIgXcaRnQDlBBtxlJMGGHFUWGb is disabled"
},
{
"destinationId": "1zl4i0J8M8T7sozoLnueW46RVYe",
"destination": "WEBHOOK",
"destinationName": "test-webhook-dest",
"data": [{
"user_transformed_payload": {
"error": "Transformation VersionID not found"
},
"dest_transformed_payload": [{
"version": "1",
"type": "REST",
"method": "POST",
"endpoint": "https://webhook.site/9d5e3e43-6c2b-4b84-be9f-0147347b4cdf",
"headers": {
"content-type": "application/json"
},
"params": {},
"body": {
"JSON": {
"context": {
"traits": {
"firstName": "James",
"lastName": "Doe"
}
},
"type": "identify",
"userId": "abc@123.com"
},
"JSON_ARRAY": {},
"XML": {},
"FORM": {}
},
"files": {}
}],
"destination_response": [{
"success": false,
"error": {
"message": "Token not found",
"id": null
}
}],
"destination_response_status": [
404
]
}]
},
{
"destinationId": "1tKpO0kantcKjd5czXVD1cdwUBE",
"destination": "MARKETO",
"destinationName": "Marketo",
"data": [{
"user_transformed_payload": {
"error": "Transformation VersionID not found"
},
"dest_transformed_payload": [{
"version": "1",
"type": "REST",
"method": "POST",
"endpoint": "https://585-AXP-425.mktorest.com/rest/v1/leads.json",
"headers": {
"Authorization": "Bearer f54f0384-583b-4718-b533-38aaed4bc5ae:cd",
"Content-Type": "application/json"
},
"params": {},
"body": {
"JSON": {
"action": "createOrUpdate",
"input": [{
"FirstName": "James",
"LastName": "Doe",
"lastName": "Doe",
"firstName": "James",
"id": 1328262,
"userId": "abc@123.com"
}],
"lookupField": "id"
},
"JSON_ARRAY": {},
"XML": {},
"FORM": {}
},
"files": {}
}],
"destination_response": [{
"requestId": "555d#17d31b0a392",
"result": [{
"id": 1328262,
"status": "updated"
}],
"success": true
}],
"destination_response_status": [
200
]
}]
}
]The above response indicates that the source with the source ID 1zlmsBMe1dcPbu3u6NTZFUFBrNQ is connected to three destinations:
- Salesforce, a disabled destination
- Webhook, with no transformation specified in the dashboard, and
- Marketo
Verify events from a disabled source
If the /testSource endpoint is used to verify the events sent from a disabled source, the API will send the following response:
{
"message": "Source with <source_ID> is disabled"
}To override this behavior and send the event from a disabled source to all connected destinations, you can call the /testSource endpoint with the query parameter force=true:
https://api.rudderstack.com/v0/testSource/<source_ID>?force=trueVerify events for disabled destinations
If the /testSource endpoint is used to verify the events sent to a disabled destination, the API will send the following response:
{
"destinationId": "<destination_ID>",
"destinationName": "<destination_name>",
"error": "Destination with id <destination_ID> is disabled"
}To override this behavior and send the event to a disabled destination, you can call the /testSource endpoint with the query parameter force=true:
https://api.rudderstack.com/v0/testSource/<source_ID>?force=trueVerification stages
The request body for the testDestination and testSource endpoints of this API is as shown:
{
"stage": {
"user_transform": true,
"dest_transform": true,
"send_to_destination": true
},
"message": {
// RudderStack HTTP Payload (identify, track, etc.)
}
}Here, stage essentially defines the different stages enabled in the pipeline through which the API verifies the event payload. These stages are:
user_transformdest_transformsend_to_destination
The following sections define each of these stages in detail.
User transformation
If user_transform is set to true, the API checks if a user transformation is connected to a destination and returns the transformed event as a response. If set to false, the API skips this stage completely and moves to the next stage (dest_transform).
Note the following:
- Suppose you set
user_transformtotrue, but no user transformation is specified while configuring the destination in the dashboard. In this case, the API returns the following response before skipping to the next stage:
"user_transformed_payload": {
"error": "Transformation VersionID not found"
}- If an error occurs while applying the transformation to the payload, the API returns an error, and the next stages are aborted.
A sample API response is shown below:
[{
"data": [{
"user_transformed_payload": {
"error": "Error: Error."
},
"dest_transformed_payload": {
"error": "error encountered in user_transformation stage. Aborting."
},
"destination_response": {
"error": "error encountered in dest_transformation stage. Aborting."
}
}]
}]Destination transformation
If dest_transform is set to true, the API returns the transformer response. This response shows the payload after it has been transformed into a destination-specific format.
A sample API response when dest_transform is set to true is shown below:
"dest_transformed_payload": [{
"version": "1",
"type": "REST",
"method": "POST",
"endpoint": "https://webhook.site/9d5e3e43-6c2b-4b84-be9f-0147347b4cdf",
"headers": {
"content-type": "application/json"
},
"params": {},
"body": {
"JSON": {
"context": {
"traits": {
"firstName": "James",
"lastName": "Doe"
}
},
"type": "identify",
"userId": "abc@123.com"
},
"XML": {},
"FORM": {}
},
"files": {}
}]Send to destination
When send_to_destination is set to true, the event is sent to the destination and the API returns the response. If set to false, this stage is skipped completely.
A sample API response when send_to_destination is set to true is shown below:
"destination_response": [{
"status": "success",
"processed": 1,
"unprocessed": []
}],
"destination_response_status": [200]Supported message types
The Test API supports the following message type:
identifytrackpagescreengroupalias
For more information on these message types, see the RudderStack Events Specification guide.
If you specify any other message type apart from the supported events mentioned in the above list, you will get the following error:
{
"message": "message type is unsupported"
}You will get the following error message if no message type is specified in the payload, or if type is not a string:
{
"message": "message type missing or invalid"
}FAQ
Which destinations are not supported by the Test API?
The Test API does not support the destinations that leverage the rudder-server to send the test events. These destinations include:
- Amazon Kinesis
- Apache Kafka
- Azure Event Hub
- Amazon Kinesis Firehose
- Amazon EventBridge
- Amazon Personalize
- Confluent Cloud
- Google Pub/Sub
- Google Sheets
- Redis
- BigQuery Stream
- Amazon S3
- Azure Blob Storage
- DigitalOcean Spaces
- Google Cloud Storage
- MinIO
The Test API also does not support the data warehouse destinations.
What happens if type is not included in the event payload?
type refers to the event type in the payload:
- If
typeis missing in the event payload, the API returns the following error:
{
"message": "message type missing or invalid"
}- If you set
typeto any value other thanidentify,track,page,screen,group, oralias, the API returns the following error:
{
"message": "message type is unsupported"
}See the Supported message types section for more information.
Can I disable a particular verification stage in the stage object?
Yes. Set the corresponding parameter to false and the API skips that stage. For example, the following stage object skips the user transformation check:
{
"stage": {
"user_transform": false,
"dest_transform": true,
"send_to_destination": true
}
}See the Verification stages section for more information on each of the stage object parameters.