> ## 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. # Get media buy > Get a single media buy with its why-visibility fields: pendingReason (why it is not delivering yet and since when), buyer-safe errorCode with ownership, the sanitized source message, forwardedAt, and the buyerReference support handle. One call answers "why is my buy stuck". Use GET /campaigns/{campaignId} for packages, products, and delivery. ## OpenAPI ````yaml /v2/buyer-api-v2.yaml get /media-buys/{mediaBuyId} 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: Account description: Account management, service tokens, and preferences - 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: Planning Briefs description: >- Share prospective briefs with publishers and collect their fit/quote/clarify/decline/book responses (gated by the demand-supply-signals flag). - 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: /media-buys/{mediaBuyId}: get: tags: - Campaigns summary: Get media buy description: >- Get a single media buy with its why-visibility fields: pendingReason (why it is not delivering yet and since when), buyer-safe errorCode with ownership, the sanitized source message, forwardedAt, and the buyerReference support handle. One call answers "why is my buy stuck". Use GET /campaigns/{campaignId} for packages, products, and delivery. operationId: getMediaBuy parameters: - in: path name: mediaBuyId schema: description: Buyer media buy ID example: mb_ETBn4gJ9Wu type: string minLength: 1 required: true description: Buyer media buy ID responses: '200': description: Get media buy content: application/json: schema: $ref: '#/components/schemas/BuyerMediaBuyResponse' '400': description: Bad request content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '401': description: Unauthorized content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '403': description: >- Caller is not a buyer — the route is mounted behind the buyer role guard. content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '404': description: No media buy with this id owned by the caller. 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: BuyerMediaBuyResponse: description: Response containing a single media buy with why-visibility type: object properties: mediaBuy: $ref: '#/components/schemas/BuyerMediaBuy' required: - mediaBuy additionalProperties: false 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 BuyerMediaBuy: description: >- A single media buy with its why-visibility annotation (pendingReason, errorCode, forwardedAt, buyerReference). Use get_campaign for packages, products, and delivery. type: object properties: mediaBuyId: description: Buyer media buy ID example: mb_ETBn4gJ9Wu type: string name: description: Media buy name type: string status: description: >- Interchange media buy status (DRAFT, PENDING_APPROVAL, ACTIVE, PAUSED, COMPLETED, CANCELED, FAILED, REJECTED). example: PENDING_APPROVAL type: string pendingAt: description: >- Which layer the buy is parked at; only present while status is PENDING_APPROVAL. Use pendingReason for the specific wait. type: string enum: - storefront - salesagent - unknown pendingChange: description: >- A submitted change that has not yet reached the delivering buy. Every other field on this object describes what is LIVE, so this is the only place a queued change surfaces. Absent when there is nothing pending. allOf: - $ref: '#/components/schemas/MediaBuyPendingChange' pendingReason: description: >- Why the buy is not delivering yet, rolled up to the most-blocking wait across its legs. An annotation derived from persisted forwarding state — never a status. Absent when the buy is delivering, terminal, or not storefront-routed. allOf: - $ref: '#/components/schemas/MediaBuyPendingReason' pendingSince: description: >- When the current wait began (ISO 8601). Present when pendingReason is set and the start of the wait is known. type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ errorCode: description: >- Buyer-safe structured error code when forwarding failed or the buy was rejected. Internal platform codes are mapped to this set and never emitted raw. allOf: - $ref: '#/components/schemas/BuyerMediaBuyErrorCode' errorOwner: description: >- Which party owns fixing the error. Present whenever errorCode is present. allOf: - $ref: '#/components/schemas/MediaBuyErrorOwner' sourceMessage: description: >- The source's rejection or moderation message, when one was provided — whitespace-collapsed, truncated, and known upstream identifiers removed. type: string forwardedAt: description: >- When the buy was forwarded to its inventory source(s) (ISO 8601). Absent when it has not been forwarded. type: string format: date-time pattern: >- ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$ buyerReference: description: >- Support reference for this buy (`sf::`). Quote it with the request timestamp when contacting the seller or Scope3 support. example: sf:42:sf_mb_1783031864469_8pbc8mmr type: string startTime: description: 'When this media buy starts: "asap" or an ISO 8601 date-time.' type: string endTime: description: When this media buy ends (ISO 8601). type: string createdAt: description: When the media buy was created (ISO 8601) 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))$ updatedAt: description: When the media buy was last updated (ISO 8601) 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))$ required: - mediaBuyId - name - status - createdAt - updatedAt 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 MediaBuyPendingChange: description: >- A buyer-submitted change that has been accepted by Interchange but has NOT yet taken effect on the delivering buy. Its presence is the signal that this buy has an unapplied change; absence means everything reported is live. Never treat these values as delivering. type: object properties: status: description: >- Lifecycle status of the pending change itself, typically PENDING_APPROVAL. This is NOT the status of the buy: the buy keeps its own top-level status, which reflects what is delivering now. example: PENDING_APPROVAL type: string pendingAt: description: >- Which layer the pending change is parked at. 'storefront' = waiting on the storefront operator's manual approval, 'salesagent' = the inventory source is still processing it, 'unknown' = indeterminate. type: string enum: - storefront - salesagent - unknown reason: description: >- Reason recorded when the change was submitted, when one was supplied. example: Extended to 8/11 with W5+W6 gross budget type: string differences: description: >- Only the fields whose pending value differs from live appear here. An empty object means a pending change exists whose comparable fields already match live. type: object properties: endTime: description: Flight end date change (ISO 8601). type: object properties: live: description: The value currently in effect on the delivering buy. type: string proposed: description: The value the pending change would set. type: string additionalProperties: false budget: description: >- Total budget change in the buy's currency, summed across its packages. type: object properties: live: description: The value currently in effect on the delivering buy. type: number proposed: description: The value the pending change would set. type: number additionalProperties: false additionalProperties: false required: - status - differences additionalProperties: false MediaBuyPendingReason: description: >- Why a not-yet-delivering media buy is waiting, and implicitly whose side owns the wait. A platform-derived annotation — never a status value. awaiting_storefront_approval / awaiting_source_moderation / creative_processing_at_source / awaiting_creative_approval = the seller side owns the wait; no_creatives_attached / source_rejected_creatives = the buyer owns it (attach or fix creatives); forward_failed_retrying / forward_failed_needs_correction = the platform owns it; accepted_awaiting_trafficking / scheduled_not_started = nothing is wrong, the buy is queued or scheduled. type: string enum: - forward_failed_needs_correction - forward_failed_retrying - awaiting_storefront_approval - awaiting_source_moderation - no_creatives_attached - source_rejected_creatives - creative_processing_at_source - awaiting_creative_approval - accepted_awaiting_trafficking - scheduled_not_started BuyerMediaBuyErrorCode: description: >- Buyer-safe structured error code for a media buy that failed to forward or was rejected. Paired with errorOwner (who owns the fix) and, when the source provided one, a sanitized human-readable message. type: string enum: - product_no_longer_available - source_rejected - storefront_rejected - source_unavailable - invalid_request - quote_expired - platform_error MediaBuyErrorOwner: description: >- Which party owns fixing the error: buyer_input (the request needs a correction from the buyer), platform (Scope3 owns the fault), seller (the storefront or its source made the decision or is unavailable). type: string enum: - buyer_input - platform - seller securitySchemes: bearerAuth: type: http scheme: bearer description: API key or access token ````