---
title: "Start Experiment Endpoint"
method: POST
path: "/admin/experiments"
tags: ["admin"]
---

# Start Experiment Endpoint

`POST /admin/experiments`

## Request body

- StartExperimentRequest
  - `name` string, required
  - `variants` ExperimentVariantPayload[], required
    - `name` string, required
    - `limit` integer, required
    - `weight` number, required

## Response `201`

Successful Response

- ExperimentResponse
  - `id` string, required
  - `name` string, required
  - `started_at` string, date-time, required
  - `ended_at` string, date-time, nullable, required
  - `spec` object, required
  - `conclusion` object, nullable, required

## Other responses

- `422` — Validation Error

---

[API](https://skmtc.dev/stardrift/apis/fastapi.md) · [All operations](https://skmtc.dev/stardrift/apis/fastapi/llms.txt) · [OpenAPI document](https://skmtc-service-production.skmtc.workers.dev/v1/apis/stardrift/fastapi/revisions/00746572572a/schema)