CatchDoms Expired Domains API Free API

openapi: 3.2.0
info:
  title: CatchDoms Free API
  description: Search expired, auction, brandable, aged deleted, and pending-delete domains from 20+ sources with SEO metrics, quality scores, traffic estimates, and auction prices. Updated continuously across source-specific schedules.
  version: 1.1.1
  contact:
    name: CatchDoms
    url: https://catchdoms.com
    email: hello@catchdoms.com
  x-logo:
    url: https://catchdoms.com/img/favicons/android-chrome-192x192.png
servers:
- url: https://catchdoms.com/api
  description: Production
security:
- BearerAuth: []
tags:
- name: Free
paths:
  /free/domains:
    get:
      summary: Free domain search (no auth)
      description: Public, unauthenticated demo endpoint. Rate-limited to 3 requests/minute per IP. Returns at most 50 results; only the first few domain names are shown in full, the rest are masked (e.g. ••••••••.com), and premium metrics (Trust Flow, Citation Flow, TTF topic, GMB) are omitted. Use the authenticated /domains endpoint for full data.
      operationId: freeDomains
      security: []
      parameters:
      - name: source
        in: query
        description: Filter by source platform (free-tier sources only)
        schema:
          type: string
          enum:
          - dynadot
          - catched
          - dropcatch
          - godaddy
          - gname
          - snapnames
          - ukdroplists
          - subreg
          - webexpire
          - parkio
          - bloomup
          - seodomains
      - name: tld
        in: query
        description: Filter by TLD
        schema:
          type: string
      - name: score_min
        in: query
        description: Minimum quality score (0-100)
        schema:
          type: integer
          minimum: 0
          maximum: 100
      - name: age_min
        in: query
        description: Minimum age in years
        schema:
          type: integer
          minimum: 0
      - name: type
        in: query
        schema:
          type: string
          enum:
          - auction
          - closeout
          - backorder
      - name: has_bids
        in: query
        schema:
          type: boolean
      - name: has_backlinks
        in: query
        schema:
          type: boolean
      - name: da_min
        in: query
        schema:
          type: integer
          minimum: 0
          maximum: 100
      - name: rd_min
        in: query
        schema:
          type: integer
          minimum: 0
      - name: language
        in: query
        schema:
          type: string
      - name: contains
        in: query
        schema:
          type: string
      - name: price_min
        in: query
        description: Minimum price or bid in each source's native currency
        schema:
          type: number
      - name: price_max
        in: query
        description: Maximum price or bid in each source's native currency
        schema:
          type: number
      - name: snapshots_min
        in: query
        schema:
          type: integer
          minimum: 0
      - name: limit
        in: query
        description: Number of results (1-50, default 10)
        schema:
          type: integer
          minimum: 1
          maximum: 50
          default: 10
      responses:
        '200':
          description: Masked free-tier results
          content:
            application/json:
              schema:
                type: object
                properties:
                  data:
                    type: array
                    items:
                      $ref: '#/components/schemas/FreeDomain'
                  meta:
                    type: object
                    properties:
                      count:
                        type: integer
                      total_available:
                        type: integer
                      visible_names:
                        type: integer
                        description: How many domain names are shown in full before masking
                      free_tier:
                        type: boolean
                  note:
                    type: string
                  upsell:
                    type: object
                    properties:
                      message:
                        type: string
                      signup_url:
                        type: string
                      pro_url:
                        type: string
        '429':
          description: Rate limit exceeded (3 requests/minute per IP)
      tags:
      - Free
components:
  schemas:
    FreeDomain:
      type: object
      description: A domain as returned by the free, unauthenticated /free/domains endpoint. Names beyond the first few are masked, and premium metrics (TF/CF/TTF/GMB) are omitted.
      properties:
        name:
          type: string
          description: Domain name, or a masked placeholder (••••••••.tld) beyond the free visible limit
        tld:
          type: string
        source:
          type: string
        type:
          type:
          - string
          - 'null'
        price:
          type:
          - number
          - 'null'
        max_bid:
          type:
          - number
          - 'null'
        currency:
          type:
          - string
          - 'null'
          pattern: ^[A-Z]{3}$
          description: ISO 4217 currency code for this source's price fields; null when not deterministic
          example: USD
        bids_count:
          type:
          - integer
          - 'null'
        auction_end_date:
          type:
          - string
          - 'null'
          format: date-time
        score:
          type:
          - integer
          - 'null'
        age:
          type:
          - integer
          - 'null'
        domain_authority:
          type:
          - integer
          - 'null'
        backlinks_count:
          type:
          - integer
          - 'null'
        referring_domains:
          type:
          - integer
          - 'null'
        language:
          type:
          - string
          - 'null'
        purchase_url:
          type:
          - string
          - 'null'
          description: Buy/bid link; null when the domain name is masked
  securitySchemes:
    BearerAuth:
      type: http
      scheme: bearer
      description: API token from your CatchDoms account. Get one at https://catchdoms.com/api-access
externalDocs:
  description: Full API documentation
  url: https://catchdoms.com/docs