> ## Documentation Index > Fetch the complete documentation index at: https://docs.apostra.com/llms.txt > Use this file to discover all available pages before exploring further. # Sync campaign creatives > Sync attached creatives to every eligible campaign media buy. Non-terminal buys without a route are returned in `skipped` and do not block eligible buys; terminal buys are excluded. ## OpenAPI ````yaml /v2/buyer-api-v2.yaml post /campaigns/{campaignId}/creatives/sync openapi: 3.0.0 info: title: Scope3 Buyer API version: 2.0.0 description: |- REST API for advertisers to manage advertisers, campaigns, and reporting. ## Authentication All endpoints require a Bearer token in the Authorization header: ``` Authorization: Bearer your-api-key ``` ## Base URL `https://api.apostra.com/api/v2/buyer` ## For AI Agents AI agents can use the MCP endpoint at `/mcp/v2/buyer` with three tools: - `initialize`: Start an MCP session - `api_call`: Make REST API calls - `ask_about_capability`: Learn about API features servers: - url: https://api.apostra.com/api/v2/buyer description: Production server security: [] tags: - name: Signup description: Request reviewed access to Interchange - name: Account description: Account management, service tokens, and preferences - name: Asks description: >- What you are waiting on Scope3 for — support, product, and supply asks in one list - name: Advertisers description: Manage advertisers - name: Product Discovery description: Discover and select products - name: Campaigns description: Manage advertising campaigns - name: Creatives description: Build, manage, and sync campaign creatives via AdCP Creative Protocol - name: Reporting description: Access performance metrics - name: Event Sources description: >- Manage event source configurations and log conversion/marketing events for attribution - name: Property Lists description: Validate property lists against AAO registry - name: Sales Agents description: View and connect sales agents - name: Measurement description: Measurement sources, records, context, and freshness - name: Syndication description: Syndicate resources to ADCP agents - name: Tasks description: Track async operation status - name: Buyer Billing description: >- Consolidated invoicing for buyers — invoices and pending invoice items issued by Scope3 across the buyer customer. - name: MCP description: Model Context Protocol endpoints for AI agents paths: /campaigns/{campaignId}/creatives/sync: post: tags: - Creatives summary: Sync campaign creatives description: >- Sync attached creatives to every eligible campaign media buy. Non-terminal buys without a route are returned in `skipped` and do not block eligible buys; terminal buys are excluded. operationId: syncCampaignCreatives parameters: - in: path name: campaignId schema: type: string minLength: 1 description: Campaign ID required: true description: Campaign ID responses: '200': description: Sync campaign creatives content: application/json: schema: $ref: '#/components/schemas/CampaignCreativeSyncResponse' '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: >- No media buy is eligible for creative sync. The response has code `NOT_FOUND` and details.reason `CREATIVE_SYNC_ROUTE_UNAVAILABLE`. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - bearerAuth: [] components: schemas: CampaignCreativeSyncResponse: type: object properties: synced: type: array items: type: object properties: storefrontId: type: integer minimum: 0 exclusiveMinimum: true maximum: 9007199254740991 mediaBuyId: type: string status: type: string message: type: string errorCode: type: string required: - storefrontId - mediaBuyId - status additionalProperties: false skipped: type: array items: type: object properties: mediaBuyId: type: string description: >- Buyer media buy identifier for the skipped creative-sync route. storefrontId: nullable: true description: >- Storefront for the skipped route, or null when no storefront route was recorded. type: integer minimum: 0 exclusiveMinimum: true maximum: 9007199254740991 routeMediaBuyId: type: string description: >- Media buy identifier used by the skipped route. This distinguishes a missing submitted route from a pre-submit storefront route. reason: $ref: '#/components/schemas/CampaignCreativeSyncSkipReason' required: - mediaBuyId - storefrontId - routeMediaBuyId - reason additionalProperties: false description: >- Non-terminal creative-sync routes that were not synced because they have no route yet or have not been submitted. Terminal media buys are excluded and do not appear here. required: - synced - skipped additionalProperties: false description: >- Campaign creative-sync outcomes. Eligible buys are dispatched even when other non-terminal buys are skipped. ErrorResponse: type: object properties: data: type: string nullable: true enum: - null error: $ref: '#/components/schemas/ApiError' required: - data - error additionalProperties: false description: Standard error response CampaignCreativeSyncSkipReason: type: string enum: - NO_ROUTE_YET - NOT_SUBMITTED description: >- Why a non-terminal media buy was not eligible for this creative-sync request. ApiError: type: object properties: code: type: string description: Machine-readable error code message: type: string description: Human-readable error message field: description: Field path associated with the error type: string details: description: Additional error context type: object additionalProperties: {} required: - code - message additionalProperties: false description: Structured error object securitySchemes: bearerAuth: type: http scheme: bearer description: API key or access token ```` This documentation is built and hosted on [Mintlify](https://mintlify.com), a developer documentation platform.