---
title: "Launch Checklist"
method: POST
path: "/onboarding-checklist/launch"
tags: ["runtime_mutations", "onboarding"]
---

# Launch Checklist

`POST /onboarding-checklist/launch`

## Request

- Base URL: `https://api.quadrillion.io` (the document declares no server; this is the origin it was published from)
- URL: `https://api.quadrillion.io/onboarding-checklist/launch`
- Auth: none declared

## Request body

- LaunchPayload
  - `item_id` string, nullable
  - `user_context` string
  - `source_path` string
  - `source_paths` string[]
  - `attachment_uuids` string[]

## Response `200`

Successful Response

- ChecklistLaunch
  - `message_text` string, required
  - `display_text` string, required

## Other responses

- `422`: Validation Error

## Changes

- **2026-10-16** `0e2e5be8cbd7`: 1 info
  - endpoint added

[Operation history](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/changes/onboarding-checklist/launch/post.md)

---

[API](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api.md) - [All operations](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/llms.txt) - [OpenAPI document](https://skmtc.dev/quadrillion/apis/quadrillion-cloud-api/revisions/2e1425e0e054?raw)