Create a testset

POST

https://api.respan.ai/api/testsets/

Create a new testset for evaluation. Public API responses return the external testset ID and column metadata only.

Authentication

AuthorizationBearer

Use your Respan API key for Respan API authentication. Enter only the Respan API key value; clients send Authorization: Bearer <RESPAN_API_KEY>. For /api/responses, OpenAI or Azure OpenAI provider credentials go in Settings -> Providers or the request body credential_override field, not in this auth field.

Request

This endpoint expects an object.

namestringRequired

Testset name.

descriptionstringOptional

Optional description stored with the testset.

starredbooleanOptionalDefaults to false

Whether to star the testset in the UI.

column_definitionslist of objectsOptional

Column definitions for the testset rows.

Response

Created testset.

idstring

Public testset ID.

namestring

Testset name.

created_atdatetime

When the testset was created.

updated_atdatetime

When the testset was last updated.

current_max_row_indexdouble

Highest row index currently present in the testset.

projectstring or null

Project identifier when the testset is associated with a project.

column_definitionslist of objects

Configured columns for testset rows.

Errors

400

Bad Request Error

401

Unauthorized Error

$	curl -X POST https://api.respan.ai/api/testsets/ \
>	-H "Authorization: Bearer <respanApiKey>" \
>	-H "Content-Type: application/json" \
>	-d '{
>	"name": "QA Test Set"
>	}'

1	{
2	"id": "6f41f95bb8c04656b6f6d9d5a98f4f2c",
3	"name": "QA Test Set",
4	"created_at": "2026-01-15T09:30:00Z",
5	"updated_at": "2026-01-15T09:30:00Z",
6	"current_max_row_index": 2,
7	"project": null,
8	"column_definitions": [
9	{
10	"field": "input",
11	"mapped_name": "question",
12	"type": "text"
13	},
14	{
15	"field": "expected_output",
16	"type": "text"
17	}
18	]
19	}