> ## 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.

# Update a house-scoped discount row

> Partially update a house-scoped discount row. The house_domain scope is immutable — delete and recreate to change it.



## OpenAPI

````yaml /v2/storefront-api-v2.yaml patch /house-discounts/{id}
openapi: 3.0.0
info:
  title: Scope3 Storefront API
  version: 2.0.0
  description: |-
    REST API for partners to manage storefronts, inventory sources, and billing.

    ## Authentication

    All endpoints require a Bearer token in the Authorization header:
    ```
    Authorization: Bearer your-api-key
    ```

    ## Base URL

    `https://api.interchange.io/api/v2/storefront`

    ## For AI Agents

    AI agents can use the MCP endpoint at `/mcp/v2/storefront` 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/storefront
    description: Production server
security: []
tags:
  - name: Account
    description: Account management, service tokens, and preferences
  - name: Storefront
    description: Manage storefront and inventory sources
  - name: Storefront Agents
    description: List and manage registered sales, signals, and outcomes agents
  - name: Storefront Activity
    description: Audit log of configuration and inventory changes on the storefront
  - name: Storefront Billing
    description: Stripe Connect billing for storefronts
  - name: AI Usage
    description: Storefront AI token usage visibility by model
  - name: MCP
    description: Model Context Protocol endpoints
paths:
  /house-discounts/{id}:
    patch:
      tags:
        - Storefront
      summary: Update a house-scoped discount row
      description: >-
        Partially update a house-scoped discount row. The house_domain scope is
        immutable — delete and recreate to change it.
      operationId: updateHouseDiscount
      parameters:
        - in: path
          name: id
          schema:
            description: Surrogate id of the house-discount row.
            example: 17
            type: integer
            exclusiveMinimum: true
            maximum: 9007199254740991
          required: true
          description: Surrogate id of the house-discount row.
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/UpdateHouseDiscountBody'
      responses:
        '200':
          description: Update a house-scoped discount row
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/HouseDiscountResponse'
        '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 house discount with this id exists on the storefront.
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
      security:
        - bearerAuth: []
components:
  schemas:
    UpdateHouseDiscountBody:
      description: >-
        Partial update for a house-discount row. The house_domain scope is
        immutable — delete and recreate to change it.
      type: object
      properties:
        discountPercent:
          description: >-
            Discount percent off the storefront quote for buys whose advertiser
            resolves to this house. 0–100. The larger of this and any
            buyer-specific discount wins; the quote is floored at the wholesale
            cost.
          example: 20
          type: number
          minimum: 0
          maximum: 100
        notes:
          nullable: true
          type: string
          maxLength: 2000
    HouseDiscountResponse:
      description: A single house-scoped buyer-discount row.
      type: object
      properties:
        id:
          description: Surrogate id (BIGINT serialized as string).
          example: '17'
          type: string
        storefrontId:
          description: Storefront the row belongs to (BIGINT serialized as string).
          example: '1234'
          type: string
        houseDomain:
          type: string
        discountPercent:
          type: number
        notes:
          nullable: true
          type: string
        createdAt:
          type: string
          format: date-time
          pattern: >-
            ^(?:(?:\d\d[2468][048]|\d\d[13579][26]|\d\d0[48]|[02468][048]00|[13579][26]00)-02-29|\d{4}-(?:(?:0[13578]|1[02])-(?:0[1-9]|[12]\d|3[01])|(?:0[469]|11)-(?:0[1-9]|[12]\d|30)|(?:02)-(?:0[1-9]|1\d|2[0-8])))T(?:(?:[01]\d|2[0-3]):[0-5]\d(?::[0-5]\d(?:\.\d+)?)?(?:Z))$
        updatedAt:
          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))$
        createdBy:
          nullable: true
          type: string
      required:
        - id
        - storefrontId
        - houseDomain
        - discountPercent
        - notes
        - createdAt
        - updatedAt
        - createdBy
      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

````