> ## Documentation Index > Fetch the complete documentation index at: https://docs.interchange.io/llms.txt > Use this file to discover all available pages before exploring further. # Sync catalogs > Inbound ADCP sync_catalogs endpoint. Buyers call this to sync their catalogs and items to the advertiser. ## OpenAPI ````yaml /v2/buyer-api-v2.yaml post /advertisers/{advertiserId}/catalogs/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.interchange.io/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.interchange.io/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: /advertisers/{advertiserId}/catalogs/sync: post: tags: - Advertisers summary: Sync catalogs description: >- Inbound ADCP sync_catalogs endpoint. Buyers call this to sync their catalogs and items to the advertiser. operationId: syncCatalogs parameters: - in: path name: advertiserId schema: description: Unique identifier for the advertiser example: '12345' type: string minLength: 1 required: true description: Unique identifier for the advertiser requestBody: required: true content: application/json: schema: type: object properties: account: description: Advertiser account to sync catalogs onto type: object properties: account_id: description: Advertiser ID to attach catalogs to example: '12345' type: string minLength: 1 required: - account_id catalogs: description: Catalog feeds to sync (up to 50 per call) minItems: 1 maxItems: 50 type: array items: type: object properties: catalog_id: description: Buyer-assigned catalog identifier example: my-summer-products type: string minLength: 1 type: type: string enum: - offering - product - inventory - store - promotion - hotel - flight - job - vehicle - real_estate - education - destination - app name: description: Display name for the catalog example: Summer Sale 2026 type: string minLength: 1 maxLength: 255 url: description: Remote feed URL (provide this or items, not both) example: https://feeds.example.com/products.xml type: string format: uri feed_format: type: string enum: - google_merchant_center - facebook_catalog - shopify - linkedin_jobs - tiktok_shop - pinterest_catalog - openai_product_feed - custom update_frequency: type: string enum: - realtime - hourly - daily - weekly items: description: Inline catalog items (provide this or url, not both) maxItems: 10000 type: array items: description: >- An individual catalog item (product, offering, job, etc.) type: object additionalProperties: {} conversion_events: description: Conversion event IDs linked to this catalog example: - purchase - add_to_cart type: array items: type: string required: - catalog_id - type catalog_ids: description: >- Optional: only process these catalog_ids from the catalogs array type: array items: type: string delete_missing: description: Archive buyer-managed catalogs not included in this request default: false type: boolean dry_run: description: Preview changes without persisting to the database default: false type: boolean validation_mode: description: Item validation strictness default: strict type: string enum: - strict - lenient required: - account - catalogs responses: '200': description: Sync catalogs content: application/json: schema: type: object properties: catalogs: type: array items: type: object properties: catalog_id: type: string action: type: string enum: - created - updated - unchanged - failed - deleted platform_id: type: string catalog_version_id: type: string catalog_version_number: type: integer maximum: 9007199254740991 minimum: 1 content_hash: type: string item_count: type: integer minimum: 0 maximum: 9007199254740991 items_approved: type: integer minimum: 0 maximum: 9007199254740991 items_pending: type: integer minimum: 0 maximum: 9007199254740991 items_rejected: type: integer minimum: 0 maximum: 9007199254740991 item_changes: type: object properties: added: default: 0 type: integer minimum: 0 maximum: 9007199254740991 updated: default: 0 type: integer minimum: 0 maximum: 9007199254740991 unchanged: default: 0 type: integer minimum: 0 maximum: 9007199254740991 removed: default: 0 type: integer minimum: 0 maximum: 9007199254740991 required: - added - updated - unchanged - removed additionalProperties: false health_status: type: string enum: - not_synced - healthy - stale - warning - failed activation_plan_id: type: string item_issues: type: array items: type: object properties: item_id: type: string field: type: string issue: type: string severity: type: string enum: - error - warning required: - issue additionalProperties: false last_synced_at: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ next_fetch_at: type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ error: type: string required: - catalog_id - action additionalProperties: false dry_run: type: boolean required: - catalogs additionalProperties: false '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized 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: ErrorResponse: description: Standard error response type: object properties: data: type: string nullable: true enum: - null error: $ref: '#/components/schemas/ApiError' required: - data - error additionalProperties: false ApiError: description: Structured error object type: object properties: code: description: Machine-readable error code type: string message: description: Human-readable error message type: string field: description: Field path associated with the error type: string details: description: Additional error context type: object additionalProperties: {} required: - code - message additionalProperties: false securitySchemes: bearerAuth: type: http scheme: bearer description: API key or access token ````