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OpenAPI Specification

openapi: 3.2.0
info:
  title: Datpaq Com MX Lookup API
  version: 1.1.0
  contact:
    name: Datpaq Support
    url: https://datpaq.com
  license:
    name: Proprietary
  description: 'Operations tagged MX Lookup across 2 of this provider''s published API definitions: datpaq-com.yaml, datpaq-com-openapi.yaml. Each path carries the servers of the definition it was published in.'
servers:
- url: https://datpaq.com/api/v1
  description: Production
- url: https://staging.datpaq.com/api/v1
  description: Staging
security:
- ApiKeyHeader: []
- ApiKeyQuery: []
tags:
- name: MX Lookup
  description: Mail exchange record lookup with optional SPF and SMTP checks
paths:
  /mx-lookup:
    get:
      tags:
      - MX Lookup
      operationId: mxLookupGet
      summary: Look up MX records for one or more domains (GET)
      description: Returns priority-sorted MX records with optional IP resolution, SMTP port 25 checks, and SPF parsing.
      parameters:
      - name: domains
        in: query
        required: true
        description: 'Domains to check. Note the parameter name is plural (`domains`, not `domain`), even for a single domain. Accepts one domain or a comma-separated list (max 50).

          '
        schema:
          type: string
          example: gmail.com
      - name: resolveIps
        in: query
        required: false
        schema:
          type: boolean
          default: true
      - name: validateSmtp
        in: query
        required: false
        schema:
          type: boolean
          default: false
      - name: includeSpf
        in: query
        required: false
        schema:
          type: boolean
          default: false
      responses:
        '200':
          description: MX lookup results
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GenericSuccess'
              example:
              - domain: gmail.com
                mxRecords:
                - priority: 5
                  exchange: gmail-smtp-in.l.google.com
                  ipAddresses:
                  - 142.250.102.27
                  smtpOpen: true
                spf:
                  record: v=spf1 include:_spf.google.com ~all
                  includes:
                  - _spf.google.com
                  mechanism: ~all
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
        default:
          $ref: '#/components/responses/ServiceUnavailable'
    post:
      tags:
      - MX Lookup
      operationId: mxLookupPost
      summary: Look up MX records for one or more domains (POST)
      requestBody:
        required: true
        content:
          application/json:
            schema:
              type: object
              required:
              - domains
              properties:
                domains:
                  oneOf:
                  - type: string
                    example: gmail.com
                  - type: array
                    items:
                      type: string
                    maxItems: 50
                resolveIps:
                  type: boolean
                  default: true
                validateSmtp:
                  type: boolean
                  default: false
                includeSpf:
                  type: boolean
                  default: false
            example:
              domains:
              - gmail.com
              - protonmail.com
              resolveIps: true
              validateSmtp: true
              includeSpf: true
      responses:
        '200':
          description: MX lookup results
          content:
            application/json:
              schema:
                $ref: '#/components/schemas/GenericSuccess'
              example:
                success: true
                count: 2
                data:
                - domain: gmail.com
                  mxRecords:
                  - priority: 5
                    exchange: gmail-smtp-in.l.google.com
                - domain: protonmail.com
                  mxRecords:
                  - priority: 10
                    exchange: mail.protonmail.ch
                processingTime: 12ms
        '400':
          $ref: '#/components/responses/BadRequest'
        '401':
          $ref: '#/components/responses/Unauthorized'
        '429':
          $ref: '#/components/responses/RateLimited'
        default:
          $ref: '#/components/responses/ServiceUnavailable'
    servers:
    - url: https://datpaq.com/api/v1
      description: Production
    - url: https://staging.datpaq.com/api/v1
      description: Staging
components:
  schemas:
    ErrorResponse:
      type: object
      properties:
        error:
          type: string
          description: Human-readable error message
          example: Invalid API key
        correlationId:
          type: string
          description: Request tracking identifier for support
          example: abc123-def456-789ghi
        service:
          type: string
          description: Service name that produced the error
          example: ip-geolocation
    GenericSuccess:
      type: object
      description: Standard success envelope. The data property structure varies by endpoint.
      properties:
        correlationId:
          type: string
          description: Request tracking identifier
          example: abc123-def456
        data:
          type: object
          description: Response payload (structure varies by endpoint)
        cached:
          type: boolean
          description: Whether the response was served from cache
          example: false
  responses:
    BadRequest:
      description: Bad request — missing or invalid parameters
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    RateLimited:
      description: Rate limit exceeded — retry after the indicated period
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    ServiceUnavailable:
      description: Service temporarily unavailable
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
    Unauthorized:
      description: Unauthorized — missing or invalid API key
      content:
        application/json:
          schema:
            $ref: '#/components/schemas/ErrorResponse'
  securitySchemes:
    ApiKeyHeader:
      type: apiKey
      in: header
      name: x-api-key
      description: API key passed via x-api-key request header
    ApiKeyQuery:
      type: apiKey
      in: query
      name: api_key
      description: API key passed as api_key query parameter
x-refined-from:
- datpaq-com.yaml
- datpaq-com-openapi.yaml