> ## Documentation Index > Fetch the complete documentation index at: https://docs.aitasker.co/llms.txt > Use this file to discover all available pages before exploring further. # Launch Creation > Start a creation run (202 — renders happen off-request). Returns the queued run immediately; the client polls the library for its variants. Every guardrail (flow support, source validity, daily quota, per-run cost ceiling) runs BEFORE anything is persisted, so a rejected launch leaves no ghost row behind. ## OpenAPI ````yaml /openapi.json post /api/v1/brands/{brand_id}/creative/creations openapi: 3.1.0 info: title: AITasker version: 0.1.0 servers: [] security: [] paths: /api/v1/brands/{brand_id}/creative/creations: post: tags: - Brand Creative - Brand Creative summary: Launch Creation description: |- Start a creation run (202 — renders happen off-request). Returns the queued run immediately; the client polls the library for its variants. Every guardrail (flow support, source validity, daily quota, per-run cost ceiling) runs BEFORE anything is persisted, so a rejected launch leaves no ghost row behind. operationId: launch_creation_api_v1_brands__brand_id__creative_creations_post parameters: - name: brand_id in: path required: true schema: type: string format: uuid title: Brand Id requestBody: required: true content: application/json: schema: $ref: '#/components/schemas/CreationLaunchRequest' responses: '202': description: Successful Response content: application/json: schema: $ref: '#/components/schemas/CreationSummary' '422': description: Validation Error content: application/json: schema: $ref: '#/components/schemas/HTTPValidationError' security: - HTTPBearer: [] components: schemas: CreationLaunchRequest: properties: flow: type: string title: Flow default: image_ad product_id: anyOf: - type: string format: uuid - type: 'null' title: Product Id product_url: anyOf: - type: string maxLength: 2048 - type: 'null' title: Product Url source_creative_id: anyOf: - type: string format: uuid - type: 'null' title: Source Creative Id source_variant_index: type: integer minimum: 0 title: Source Variant Index default: 0 source_upload_id: anyOf: - type: string format: uuid - type: 'null' title: Source Upload Id source_ad_id: anyOf: - type: string format: uuid - type: 'null' title: Source Ad Id board_ad_ids: anyOf: - items: type: string format: uuid type: array maxItems: 200 - type: 'null' title: Board Ad Ids group_advertiser_ids: anyOf: - items: type: string format: uuid type: array maxItems: 60 - type: 'null' title: Group Advertiser Ids gap_theme: anyOf: - type: string maxLength: 60 - type: 'null' title: Gap Theme source_post_id: anyOf: - type: string format: uuid - type: 'null' title: Source Post Id source_label: anyOf: - type: string maxLength: 120 - type: 'null' title: Source Label set_size: anyOf: - type: integer maximum: 24 minimum: 1 - type: 'null' title: Set Size aspect_ratio: type: string title: Aspect Ratio default: '1:1' platform: anyOf: - type: string maxLength: 40 - type: 'null' title: Platform hook: anyOf: - type: string maxLength: 300 - type: 'null' title: Hook instructions: anyOf: - type: string maxLength: 1000 - type: 'null' title: Instructions type: object title: CreationLaunchRequest description: >- Start a Create run. The launch route validates `flow` against the orchestrator's `IMPLEMENTED_FLOWS`, so a flow whose runner hasn't shipped is rejected at the boundary rather than enqueued into a lane that would fail it. Sources come in two shapes and the flow decides which it needs: * **Product-sourced** (`image_ad`, `video_ad`, `slideshow_ad`, `photoshoot`) — a saved product carries catalogue data; a URL carries only what the user typed, so `instructions` matters more there. * **Asset-sourced** (`iterate`, `reframe`, `restage` — B7's edit flows) — an image the user already has: one variant of a prior creation, or an upload. The launcher resolves it to a storage key and ownership-checks it; there is no product lookup, because an edit works from the picture. Sending a product to an edit flow (or an asset to a product flow) is a 400 with copy naming what that flow actually needs — NOT a silent fallback, since the two produce completely different output. CreationSummary: properties: id: type: string format: uuid title: Id flow: type: string title: Flow status: type: string title: Status source_type: type: string title: Source Type source_label: anyOf: - type: string - type: 'null' title: Source Label aspect_ratio: anyOf: - type: string - type: 'null' title: Aspect Ratio platform: anyOf: - type: string - type: 'null' title: Platform asset_count: type: integer title: Asset Count default: 0 preview_url: anyOf: - type: string - type: 'null' title: Preview Url archived_at: anyOf: - type: string format: date-time - type: 'null' title: Archived At created_at: type: string format: date-time title: Created At completed_at: anyOf: - type: string format: date-time - type: 'null' title: Completed At type: object required: - id - flow - status - source_type - created_at title: CreationSummary description: A card in the My Creations grid. HTTPValidationError: properties: detail: items: $ref: '#/components/schemas/ValidationError' type: array title: Detail type: object title: HTTPValidationError ValidationError: properties: loc: items: anyOf: - type: string - type: integer type: array title: Location msg: type: string title: Message type: type: string title: Error Type input: title: Input ctx: type: object title: Context type: object required: - loc - msg - type title: ValidationError securitySchemes: HTTPBearer: type: http scheme: bearer ````