> ## 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. # Accept an exact organization IU Rate Card offer > Creates the one initial immutable IU-plan binding for a direct human organization admin. The server re-resolves the Rate Card, activity terms, plan, governing agreement, and corporate discount; a changed displayed offer must be reviewed again. ## OpenAPI ````yaml /v2/buyer-api-v2.yaml post /billing/iu-rate-card/accept 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: /billing/iu-rate-card/accept: servers: - url: https://api.interchange.io/api/v2 description: Production server post: tags: - Buyer Billing summary: Accept an exact organization IU Rate Card offer description: >- Creates the one initial immutable IU-plan binding for a direct human organization admin. The server re-resolves the Rate Card, activity terms, plan, governing agreement, and corporate discount; a changed displayed offer must be reviewed again. operationId: acceptIuRateCardOffer requestBody: required: true content: application/json: schema: type: object properties: offerVersion: type: string pattern: ^v1:[0-9a-f]{64}$ planId: type: string pattern: ^\d+$ idempotencyKey: type: string minLength: 8 maxLength: 128 pattern: ^[A-Za-z0-9._:-]+$ required: - offerVersion - planId - idempotencyKey additionalProperties: false responses: '200': description: Accept an exact organization IU Rate Card offer content: application/json: schema: $ref: '#/components/schemas/AcceptIuRateCardOfferResponse' '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: ACCESS_DENIED (a direct human organization admin is required). content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '409': description: >- CONFLICT (the offer changed, the key was reused, or a binding already exists). content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' '500': description: Internal server error content: application/json: schema: $ref: '#/components/schemas/ErrorResponse' security: - bearerAuth: [] components: schemas: AcceptIuRateCardOfferResponse: type: object properties: data: type: object properties: id: type: string pattern: ^\d+$ acceptingCustomerId: type: integer maximum: 9007199254740991 minimum: 1 contractId: type: string pattern: ^\d+$ agreementDocumentId: type: string pattern: ^\d+$ agreementKind: type: string enum: - STANDARD_TOS - CUSTOM_CONTRACT - AAA tosVersion: nullable: true type: string rateCardId: type: string pattern: ^\d+$ rateCardPublicVersion: type: string planId: type: string pattern: ^\d+$ planCode: type: string planName: type: string renewalPosture: type: string enum: - STANDARD_ROLLING - PINNED predecessorBindingId: nullable: true type: string pattern: ^\d+$ offerVersion: type: string minLength: 1 effectiveRateCard: type: object properties: version: type: string pattern: ^erc-v1:[0-9a-f]{64}$ visibility: type: string enum: - PUBLIC - PRIVATE displayName: type: string minLength: 1 maxLength: 160 commercialOfferId: nullable: true type: string pattern: ^\d+$ adjustmentSource: type: string enum: - RATE_CARD_DEFAULT - LEGACY_DISCOUNT - DIRECT - PROMOTION_CODE - REFERRAL_CODE renewalBehavior: default: PIN_EXACT type: string enum: - PIN_EXACT - REVIEW_REQUIRED adjustments: type: object properties: price: default: null nullable: true oneOf: - type: object properties: kind: type: string enum: - PERCENT basisPoints: type: integer minimum: 1 maximum: 9999 required: - kind - basisPoints additionalProperties: false - type: object properties: kind: type: string enum: - PACKAGE monthlyCommitmentMinor: type: integer minimum: 0 maximum: 9007199254740991 includedIus: type: integer minimum: 0 maximum: 9007199254740991 overageUnitAmountMinor: type: integer minimum: 0 maximum: 9007199254740991 required: - kind - monthlyCommitmentMinor - includedIus - overageUnitAmountMinor additionalProperties: false type: object platform: default: null nullable: true type: object properties: displayName: type: string minLength: 1 maxLength: 120 monthlyFeeMinor: type: integer minimum: 0 maximum: 9007199254740991 currency: type: string enum: - USD - EUR - GBP - AUD entitlementBundleKey: type: string minLength: 1 maxLength: 120 pattern: ^[a-z0-9][a-z0-9._-]*$ required: - displayName - monthlyFeeMinor - currency - entitlementBundleKey additionalProperties: false activityTerms: default: [] type: array items: type: object properties: activityCode: type: string enum: - ACTIVATED_SOCIAL_ACCOUNT_MONTH - MULTI_SELLER_PRODUCT_RANKING - MERCHANDISING_BRIEF_RESPONSE - MURPH_WORKING_SESSION - GENERATED_IMAGE - GENERATED_VIDEO_SECONDS - ANALYZE_ACCOUNT - CAMPAIGN_OPTIMIZATION_MONTH - MANAGED_MEDIA_BUY_MONTH - STANDARD_DOCUMENT_UNDERSTANDING - LARGE_DOCUMENT_UNDERSTANDING - AUDIO_VIDEO_UNDERSTANDING_MINUTES - CUSTOM_BIGQUERY_GIB - MODULAR_SOURCE_MANAGEMENT_MONTH displayName: type: string minLength: 1 maxLength: 120 billingPosture: type: string enum: - INCLUDED - IU_PRICE iuAmountMilli: nullable: true type: integer maximum: 9007199254740991 minimum: 1 required: - activityCode - displayName - billingPosture - iuAmountMilli additionalProperties: false setupCredit: default: null nullable: true type: object properties: program: type: string enum: - STOREFRONT_SETUP required: - program additionalProperties: false required: - price - platform - activityTerms - setupCredit additionalProperties: false required: - version - visibility - displayName - commercialOfferId - adjustmentSource - renewalBehavior - adjustments additionalProperties: false termStart: 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))$ termEnd: 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))$ listCommitmentMinor: type: integer minimum: 0 maximum: 9007199254740991 listOverageUnitAmountMinor: type: integer minimum: 0 maximum: 9007199254740991 includedIus: type: integer minimum: 0 maximum: 9007199254740991 discountAuthorizationId: nullable: true type: string pattern: ^\d+$ discountBasisPoints: type: integer minimum: 0 maximum: 9999 netCommitmentMinor: type: integer minimum: 0 maximum: 9007199254740991 netOverageUnitAmountMinor: type: integer minimum: 0 maximum: 9007199254740991 currency: type: string enum: - USD - EUR - GBP - AUD billingPeriodMonths: type: number enum: - 1 rolloverPolicy: nullable: true type: object properties: capBasisPoints: type: integer minimum: 1 maximum: 5000 expiresAfterBillingPeriods: type: number enum: - 1 required: - capBasisPoints - expiresAfterBillingPeriods additionalProperties: false paymentTermsDays: type: integer maximum: 9007199254740991 minimum: 1 acceptedByUserId: type: string pattern: ^\d+$ acceptedAt: 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))$ acceptanceSource: type: string enum: - SIGNUP - PLAN_BILLING - MCP_APP - ADMIN_ORDER_FORM - AUTO_RENEWAL activityTerms: type: array items: type: object properties: activityCode: type: string enum: - ACTIVATED_SOCIAL_ACCOUNT_MONTH displayName: type: string minLength: 1 maxLength: 120 iuAmountMilli: type: integer minimum: 1 maximum: 2147483647 billingPeriodMonths: type: number enum: - 1 includedBackfillMonths: type: integer minimum: 0 maximum: 120 required: - activityCode - displayName - iuAmountMilli - billingPeriodMonths - includedBackfillMonths additionalProperties: false required: - id - acceptingCustomerId - contractId - agreementDocumentId - agreementKind - tosVersion - rateCardId - rateCardPublicVersion - planId - planCode - planName - renewalPosture - predecessorBindingId - offerVersion - termStart - termEnd - listCommitmentMinor - listOverageUnitAmountMinor - includedIus - discountAuthorizationId - discountBasisPoints - netCommitmentMinor - netOverageUnitAmountMinor - currency - billingPeriodMonths - rolloverPolicy - paymentTermsDays - acceptedByUserId - acceptedAt - acceptanceSource - activityTerms additionalProperties: false required: - data 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 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 ````