> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omniverifier.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Start List

> Start processing an existing deliverable list



## OpenAPI

````yaml api-reference/openapi.yaml post /deliverable/{listId}/start
openapi: 3.0.3
info:
  title: OmniVerifier Public API
  description: Public API for email verification and credit management
  version: 1.0.0
  contact:
    name: OmniVerifier Support
    email: support@omniverifier.com
servers:
  - url: https://api.omniverifier.com/v1/validate
    description: API Server
security:
  - ApiKeyAuth: []
paths:
  /deliverable/{listId}/start:
    post:
      tags:
        - Deliverable Verification
      summary: Start deliverable list processing
      description: Start processing an existing deliverable list
      operationId: startDeliverableList
      parameters:
        - name: listId
          in: path
          required: true
          schema:
            type: string
          description: List ID
      responses:
        '200':
          description: Successfully started list processing
          content:
            application/json:
              schema:
                type: object
                properties:
                  credits_deducted:
                    type: integer
                    description: Number of credits deducted
                    example: 100
                  remaining_balance:
                    type: integer
                    description: Remaining credit balance
                    example: 1400
        '404':
          description: List not found
        '500':
          description: Internal server error
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/Error'
components:
  schemas:
    Error:
      type: object
      properties:
        error:
          type: string
          description: Error message
          example: Invalid API key
        code:
          type: string
          description: Error code
          example: INVALID_API_KEY
  securitySchemes:
    ApiKeyAuth:
      type: apiKey
      in: header
      name: x-api-key
      description: API key for authentication

````