---
title: "Start a paired six-item scope-integrity cohort."
method: POST
path: "/api/open-bench/start"
---

# Start a paired six-item scope-integrity cohort.

`POST /api/open-bench/start`

## Request

- Base URL: `https://whetstone.cyberelf.link`
- URL: `https://whetstone.cyberelf.link/api/open-bench/start`
- Auth: none declared

## Request body

- object
  - `challenge` string

## Response `200`

One-shot session and tasks

## Other responses

- `429`: Rate limited

---

[API](https://skmtc.dev/cyberelf/apis/whetstone-tools.md) · [All operations](https://skmtc.dev/cyberelf/apis/whetstone-tools/llms.txt) · [OpenAPI document](https://skmtc.dev/cyberelf/apis/whetstone-tools/revisions/4c656180ee4d?raw)