openapi: 3.0.3
info:
  title: SparkPost Recipient Lists API
  description: Create and manage stored recipient lists for use with Transmissions. Lists can include substitution data per recipient for personalized sending campaigns.
  version: 1.0.0
  contact:
    name: SparkPost Developer Support
    url: https://developers.sparkpost.com/api/recipient-lists/
  license:
    name: Apache 2.0
    url: https://www.apache.org/licenses/LICENSE-2.0
servers:
  - url: https://api.sparkpost.com/api/v1
    description: SparkPost Production API
security:
  - ApiKeyAuth: []
paths:
  /recipient-lists:
    post:
      operationId: createRecipientList
      summary: Create a Recipient List
      description: Create a new stored recipient list for use in transmissions.
      tags:
        - Recipient Lists
      parameters:
        - name: num_rcpt_errors
          in: query
          required: false
          description: Maximum number of recipient errors to return (default 3)
          schema:
            type: integer
            default: 3
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RecipientListRequest'
      responses:
        '200':
          description: Recipient list created
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RecipientListCreateResponse'
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '422':
          description: Validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
    get:
      operationId: listRecipientLists
      summary: List All Recipient Lists
      description: Retrieve a summary list of all stored recipient lists.
      tags:
        - Recipient Lists
      responses:
        '200':
          description: List of recipient lists
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RecipientListsResponse'
  /recipient-lists/{id}:
    get:
      operationId: getRecipientList
      summary: Retrieve a Recipient List
      description: Retrieve a stored recipient list by ID.
      tags:
        - Recipient Lists
      parameters:
        - name: id
          in: path
          required: true
          description: Recipient list ID (case sensitive)
          schema:
            type: string
        - name: show_recipients
          in: query
          required: false
          description: If true, includes the recipient entries (default true)
          schema:
            type: boolean
            default: true
      responses:
        '200':
          description: Recipient list details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/RecipientListResponse'
        '404':
          description: Recipient list not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
    put:
      operationId: updateRecipientList
      summary: Update a Recipient List
      description: Update the metadata or recipients of a stored recipient list.
      tags:
        - Recipient Lists
      parameters:
        - name: id
          in: path
          required: true
          description: Recipient list ID (case sensitive)
          schema:
            type: string
        - name: num_rcpt_errors
          in: query
          required: false
          description: Maximum number of recipient errors to return (default 3)
          schema:
            type: integer
            default: 3
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/RecipientListUpdateRequest'
      responses:
        '200':
          description: Recipient list updated
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '404':
          description: Recipient list not found
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '409':
          description: Recipient list is in use
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '422':
          description: Validation error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
    delete:
      operationId: deleteRecipientList
      summary: Delete a Recipient List
      description: Delete a stored recipient list.
      tags:
        - Recipient Lists
      parameters:
        - name: id
          in: path
          required: true
          description: Recipient list ID (case sensitive)
          schema:
            type: string
      responses:
        '200':
          description: Recipient list deleted
        '400':
          description: Invalid request
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
        '409':
          description: Recipient list is referenced by a transmission
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/ErrorResponse'
components:
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: Authorization
  schemas:
    Recipient:
      type: object
      required:
        - address
      properties:
        address:
          oneOf:
            - type: string
              format: email
            - type: object
              properties:
                email:
                  type: string
                  format: email
                name:
                  type: string
                header_to:
                  type: string
        tags:
          type: array
          items:
            type: string
          description: Tags for recipient grouping
        metadata:
          type: object
          additionalProperties: true
          description: Per-recipient metadata
        substitution_data:
          type: object
          additionalProperties: true
          description: Per-recipient substitution data for templates
    RecipientListRequest:
      type: object
      required:
        - recipients
      properties:
        id:
          type: string
          maxLength: 64
          description: Unique alphanumeric ID (auto-generated if not provided)
        name:
          type: string
          maxLength: 64
          description: Display name
        description:
          type: string
          maxLength: 1024
          description: Description of the list
        attributes:
          type: object
          additionalProperties: true
          description: Arbitrary metadata for the list
        recipients:
          type: array
          items:
            $ref: '#/components/schemas/Recipient'
          description: List of recipient objects
    RecipientListUpdateRequest:
      type: object
      properties:
        name:
          type: string
          maxLength: 64
        description:
          type: string
          maxLength: 1024
        attributes:
          type: object
          additionalProperties: true
          description: Replaces all existing attributes
        recipients:
          type: array
          items:
            $ref: '#/components/schemas/Recipient'
          description: Replaces all existing recipients
    RecipientListCreateResponse:
      type: object
      properties:
        results:
          type: object
          properties:
            total_rejected_recipients:
              type: integer
            total_accepted_recipients:
              type: integer
            id:
              type: string
            name:
              type: string
    RecipientListSummary:
      type: object
      properties:
        id:
          type: string
        name:
          type: string
        description:
          type: string
        total_accepted_recipients:
          type: integer
    RecipientListResponse:
      type: object
      properties:
        results:
          allOf:
            - $ref: '#/components/schemas/RecipientListSummary'
            - type: object
              properties:
                attributes:
                  type: object
                recipients:
                  type: array
                  items:
                    $ref: '#/components/schemas/Recipient'
    RecipientListsResponse:
      type: object
      properties:
        results:
          type: array
          items:
            $ref: '#/components/schemas/RecipientListSummary'
    ErrorResponse:
      type: object
      properties:
        errors:
          type: array
          items:
            type: object
            properties:
              message:
                type: string
              code:
                type: string
              description:
                type: string