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OpenAPI Specification

openapi: 3.2.0
info:
  title: LendKey E-Sign API (via Kong Gateway) Lender Templates API
  version: 0.1
  description: '# LendKey E-Sign API - Kong Gateway Documentation


    ## Overview


    The LendKey E-Sign API provides endpoints for creating and managing electronic signature contracts using DocuSign.'
  contact:
    name: LendKey Platform Team
    url: https://lendkey.com
servers:
- url: https://api.lendkey.com/esign
  description: Production Environment
security:
- oauth2: []
tags:
- name: Lender Templates
  description: Manage DocuSign template assignments for lenders
paths:
  /templates:
    get:
      summary: Search/List Templates
      description: 'Retrieves all DocuSign templates (including soft deleted).

        If lender_uuid is provided, only templates for that lender will be returned.


        **Kong Route:** `/templates`

        **Backend:** `/templates`'
      tags:
      - Lender Templates
      operationId: listTemplates
      parameters:
      - name: lender_uuid
        in: query
        required: false
        schema:
          type: string
          format: uuid
        description: Filter templates by lender UUID
        example: 550e8400-e29b-41d4-a716-446655440000
      responses:
        '200':
          description: List of templates
          content:
            application/json:
              schema:
                type: array
                items:
                  $ref: '#/components/schemas/LenderTemplate'
        '401':
          description: Unauthorized (invalid or expired token)
        '500':
          description: Internal server error
    post:
      summary: Assign Template to Lender
      description: 'Assigns a DocuSign template to a lender.

        If the lender already has an active template, it will be soft deleted and replaced with the new template.


        **Kong Route:** `/templates`

        **Backend:** `/templates`'
      tags:
      - Lender Templates
      operationId: assignLenderTemplate
      requestBody:
        required: true
        content:
          application/json:
            schema:
              $ref: '#/components/schemas/AssignLenderTemplateRequest'
            examples:
              assignTemplate:
                summary: Assign template to lender
                value:
                  lender_uuid: 550e8400-e29b-41d4-a716-446655440000
                  program_id: '1234567890'
                  borrower_template_id: a1b2c3d4-e5f6-7890-abcd-ef1234567890
                  coborrower_template_id: b2c3d4e5-f6g7-8901-bcde-f12345678901
      responses:
        '200':
          description: Template successfully assigned
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/AssignLenderTemplateResponse'
        '400':
          description: Bad request (validation errors)
        '401':
          description: Unauthorized (invalid or expired token)
        '500':
          description: Internal server error
  /templates/{id}:
    get:
      summary: Get Template by ID
      description: 'Retrieves a DocuSign template by its ID (includes soft deleted templates).


        **Kong Route:** `/templates/{id}`

        **Backend:** `/templates/{id}`'
      tags:
      - Lender Templates
      operationId: getTemplateById
      parameters:
      - name: id
        in: path
        required: true
        schema:
          type: integer
          format: int64
        description: Template ID
        example: 123
      responses:
        '200':
          description: Template details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LenderTemplate'
        '401':
          description: Unauthorized (invalid or expired token)
        '404':
          description: Template not found
        '500':
          description: Internal server error
  /templates/{lender_uuid}/program/{program_id}:
    get:
      summary: Get Templates by Lender and Program
      description: 'Retrieves the active DocuSign template for a specific lender and program.


        **Kong Route:** `/templates/{lender_uuid}/program/{program_id}`

        **Backend:** `/templates/{lender_uuid}/program/{program_id}`'
      tags:
      - Lender Templates
      operationId: getTemplateByLenderAndProgram
      parameters:
      - name: lender_uuid
        in: path
        required: true
        schema:
          type: string
          format: uuid
        description: Lender UUID
        example: 550e8400-e29b-41d4-a716-446655440000
      - name: program_id
        in: path
        required: true
        schema:
          type: string
        description: Program identifier
        example: '1234567890'
      responses:
        '200':
          description: Template details
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/LenderTemplate'
        '401':
          description: Unauthorized (invalid or expired token)
        '500':
          description: Internal server error
components:
  schemas:
    AssignLenderTemplateRequest:
      type: object
      required:
      - lender_uuid
      - program_id
      - coborrower_template_id
      properties:
        lender_uuid:
          type: string
          format: uuid
          example: 550e8400-e29b-41d4-a716-446655440000
        program_id:
          type: string
          example: '1234567890'
        borrower_template_id:
          type: string
          format: uuid
          example: a1b2c3d4-e5f6-7890-abcd-ef1234567890
        coborrower_template_id:
          type: string
          format: uuid
          example: b2c3d4e5-f6g7-8901-bcde-f12345678901
    LenderTemplate:
      type: object
      properties:
        id:
          type: integer
          format: int64
          example: 123
        lender_uuid:
          type: string
          format: uuid
          example: 550e8400-e29b-41d4-a716-446655440000
        program_id:
          type: string
          example: '1234567890'
        borrower_template_id:
          type: string
          format: uuid
          example: a1b2c3d4-e5f6-7890-abcd-ef1234567890
        coborrower_template_id:
          type: string
          format: uuid
          example: b2c3d4e5-f6g7-8901-bcde-f12345678901
        created_at:
          type: string
          format: date-time
          example: '2025-01-15T10:30:00Z'
        deleted_at:
          type:
          - string
          - 'null'
          format: date-time
          example: null
    AssignLenderTemplateResponse:
      type: object
      properties:
        id:
          type: integer
          format: int64
          example: 123
        lender_uuid:
          type: string
          format: uuid
          example: 550e8400-e29b-41d4-a716-446655440000
        program_id:
          type: string
          example: '1234567890'
        borrower_template_id:
          type: string
          format: uuid
          example: a1b2c3d4-e5f6-7890-abcd-ef1234567890
        coborrower_template_id:
          type: string
          format: uuid
          example: b2c3d4e5-f6g7-8901-bcde-f12345678901
        created_at:
          type: string
          format: date-time
          example: '2025-01-15T10:30:00Z'
        replaced_existing:
          type: boolean
          example: false
  securitySchemes:
    oauth2:
      type: oauth2
      description: OAuth2 client credentials flow via Kong Gateway
      flows:
        clientCredentials:
          tokenUrl: /oauth2/token
          scopes: {}