generated: '2026-08-14'
method: searched
source: >-
  https://api.builtwith.com/llms.txt, https://api.builtwith.com/domain-api,
  https://api.builtwith.com/terms, https://builtwith.com/terms,
  openapi/builtwith-rest-api-openapi.json
versioning:
  scheme: uri-path, versioned independently per API product
  docs: https://api.builtwith.com/llms.txt
  current:
    domain: v23
    domain_previous: v22
    lists: lists12
    change: change1
    relationships: rv4
    free: free1
    trends: trends/v6
    trust: trustv2
    trust_previous: trustv1
    tags: tag1
    company_to_url: ctu3
    keywords: kw2
    keyword_search: kws1
    recommendations: rec1
    redirects: redirect1
    product: productv1
    vector: vector/v1
    ask: ask1
    vat: vat1
    mcp_registry: mcp2
    whoami: whoamiv1
    usage: usagev2
    billing: v1
    mppx_aliases: mppx
  note: >-
    There is no single platform version. Each product carries its own version token in the path
    and moves independently, so a client pins per endpoint.
deprecation:
  policy_url: null
  sunset_header: false
  deprecation_header: false
  rfc8594: false
  observed:
  - subject: 'query-parameter authentication (?KEY=)'
    statement: 'The legacy ?KEY= query parameter is deprecated.'
    scope: Agent Stripe Credit Top-Up API
    replacement: 'Authorization: Bearer YOUR_AGENT_BILLING_KEY'
    source: https://api.builtwith.com/llms.txt
    removal_date: null
  - subject: Domain API v22
    statement: 'v23 adds Result.SpendHistory and per-result SalesRevenue; the previous /v22/ endpoints remain available.'
    scope: Domain API
    replacement: /v23/
    source: https://api.builtwith.com/llms.txt
    removal_date: null
  - subject: Trust API v1
    statement: The published OpenAPI still documents /trustv1/ while llms.txt documents /trustv2/ as current.
    scope: Trust API
    replacement: /trustv2/
    source: https://api.builtwith.com/llms.txt
    removal_date: null
  assessment: >-
    BuiltWith publishes individual deprecation statements inside its agent documentation but no
    deprecation POLICY page, no Sunset/Deprecation response headers, and no removal dates. No
    `Deprecation` pointer is emitted in apis.yml for that reason.
deprecated_operations: []
status_page:
  url: null
  checked:
  - {url: 'https://status.builtwith.com', result: 'DNS does not resolve (curl exit, no HTTP status)'}
  - {url: 'https://builtwith.com/status', http_status: 200, result: 'soft 404 - serves the site-wide "Search results for status" page, not a status page'}
  - {url: 'https://kb.builtwith.com/status', http_status: 200, result: 'soft 404 - same catch-all search template'}
  assessment: No status page published. No `StatusPage` pointer is emitted.
sla:
  url: null
  uptime_target: null
  note: >-
    No published SLA. Enterprise "Dedicated Domain Live API" plans advertise an enterprise SLA
    on the pricing surface but no numeric target is published.
changelog:
  url: null
  substitute: https://blog.builtwith.com/
  note: >-
    No dated changelog page exists. Product changes are announced as monthly blog posts on
    blog.builtwith.com (already wired as the Blog pointer); because that is a marketing blog
    rather than a versioned change log, no `ChangeLog` pointer is emitted.
support:
  knowledge_base: https://kb.builtwith.com/
  email: support@builtwith.com
  contact: https://builtwith.com/contact
  phone: {AU: '+61 2 7242 2020', US: '+1 347 514 7140'}
terms:
  url: https://builtwith.com/terms
  last_updated: '2026-03-06'
  api_clause: >-
    "You can use the API to enhance your product in many ways. The only limitation is you
    cannot resell the data as-is or provide duplicate functionality to builtwith.com and its
    associated services."
data_freshness:
  ignore_list: https://api.builtwith.com/ignoresv1/api.json
  suffix_list: https://api.builtwith.com/suffixv1/api.json
  note: BuiltWith publishes the domains it will not index and its extended public-suffix list as machine-readable endpoints.
entity:
  legal_name: BuiltWith Pty Ltd
  abn: 53 167 706 470
  address: Level 35, One International Towers, 100 Barangaroo Avenue, Sydney NSW 2000, Australia