---
title: "Start Simulation Scenario"
method: POST
path: "/admin/simulations/scenario"
tags: ["admin", "simulations"]
---

# Start Simulation Scenario

`POST /admin/simulations/scenario`

## Request

- Base URL: `https://api-docs.upsmith.com` (the document declares no server; this is the origin it was published from)
- URL: `https://api-docs.upsmith.com/admin/simulations/scenario`
- Auth: one of:
  - API key in header `x-api-key`
  - HTTP bearer

Start a fire-and-forget, LLM-driven multi-turn simulation; poll GET /scenario/{id} for status.

## Headers

- `organization-id` string, nullable
- `timezone` string
- `x-user-id` string, nullable
- `x-actor-email` string, nullable
- `x-request-source` string, nullable
- `x-operation-id` string, nullable
- `x-commit-message` string, nullable
- `x-confirmation-id` string, nullable
- `x-chat-id` string, nullable

## Request body

- ScenarioRequest
  - `organization_id` string, required
  - `agent_id` string, required
  - `scenario` string, nullable
  - `max_turns` integer
  - `campaign_id` string, nullable
  - `targeting_rules` object[], nullable
  - `contact_id` string, nullable
  - `model` string, nullable
  - `variables` object, nullable
  - `include_engagement_history` boolean
  - `per_turn_timeout_seconds` number
  - `poll_interval_seconds` number
  - `lead_intake` string, nullable
  - `lead_source` string
  - `synthetic_lead` boolean
  - `lead_name` string, nullable
  - `interactive` boolean
  - `variant_id` string, nullable
  - `opener` string, nullable

## Response `200`

Successful Response

- ScenarioStartResponse
  - `engagement_id` string, required
  - `status` string, required
  - `turns_total` integer, required

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/upsmith/apis/upsmith-api.md) - [All operations](https://skmtc.dev/upsmith/apis/upsmith-api/llms.txt) - [OpenAPI document](https://skmtc.dev/upsmith/apis/upsmith-api/revisions/86e2c2bd93af?raw)