---
title: "Start experiment user IDs CSV export (async)"
method: POST
path: "/exports/experiments/{id}/users"
---

# Start experiment user IDs CSV export (async)

`POST /exports/experiments/{id}/users`

Export all user_id assignments for an experiment (optionally filtered
by variant_index). CSV columns: experiment_id, experiment_name, user_id,
variant_index, variant_name, created_at.

## Path parameters

- `id` integer, required

## Headers

- `api_key` string, required

## Request body

- object
  - `variant_index` integer — Optional — export only users in this variant.

## Response `202`

Export queued.

---

[API](https://skmtc.net/web2wave/apis/web2wave-api.md) · [All operations](https://skmtc.net/web2wave/apis/web2wave-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/web2wave/web2wave-api/versions/c88545119271/schema)