---
title: "Generate Reaction Endpoint"
method: POST
path: "/api/v1/ai-video-storyboard/generate-reaction"
tags: ["aiVideoAdStoryBoard"]
---

# Generate Reaction Endpoint

`POST /api/v1/ai-video-storyboard/generate-reaction`

## Request

- Base URL: `https://api.brandbooster.ai` (the document declares no server; this is the origin it was published from)
- URL: `https://api.brandbooster.ai/api/v1/ai-video-storyboard/generate-reaction`
- Auth: HTTP bearer

Bulk reaction-video generation on seedance-2-mini for the cross-product of
avatars × reference videos. Saves each as ad_type='reaction'. Returns
{count, units:[{task_id, project_id, ...}]}; poll task-status per unit.

## Request body

- GenerateReactionRequestDTO: Bulk reaction-video generation (Seedance 2 Mini). Generates the cross-product of ``avatar_urls`` × ``reference_video_urls`` — one <=6s clip per unit, saved as ad_type='reaction'. ``mode`` toggles whether the reference video is passed directly to Seedance ('reference') or analyzed into a prompt used with the avatar image ('analyze'). ``prompt`` is an optional instruction applied in both modes.
  - `avatar_urls` string[]
  - `reference_video_urls` string[]
  - `reaction_prompts` string[], nullable
  - `mode` string, nullable
  - `duration` integer
  - `match_original` boolean
  - `reference_video_durations` object, nullable
  - `resolution` string
  - `aspect_ratio` string
  - `generate_audio` boolean
  - `prompt` string, nullable
  - `vary_outfit` boolean
  - `outfit` string, nullable
  - `domain_id` string, nullable

## Response `200`

Successful Response

- unknown

## Other responses

- `422`: Validation Error

---

[API](https://skmtc.dev/brandbooster/apis/fastapi.md) - [All operations](https://skmtc.dev/brandbooster/apis/fastapi/llms.txt) - [OpenAPI document](https://skmtc.dev/brandbooster/apis/fastapi/revisions/8e8c18c2dc35?raw)