generated: '2026-08-12'
method: searched
source: >-
  https://github.com/Tapad/tapestry-ios-sdk (README + TATapestryRequest.m) and
  https://github.com/Tapad/tapestry-android-sdk — Tapad's own MIT-licensed SDK
  source; corroborated by live unauthenticated probes of
  https://tapestry.tapad.com/tapestry/1 on 2026-08-12.
note: >-
  derive-authentication.py could not be run against a spec: Tapad publishes no
  OpenAPI, so there are no securitySchemes to derive from. This profile is read
  from Tapad's own published SDK source and confirmed against the live
  endpoint. There is NO OAuth, NO bearer token, NO signed request and NO
  Authorization header anywhere in Tapad's published surface — authentication is
  a single partner identifier carried in the query string over TLS, plus an
  origin/referrer check enforced server-side.
apis:

  - api: tapestry
    base_url: https://tapestry.tapad.com/tapestry/1
    transport: HTTPS GET (query string); HSTS max-age=31536000 present on the response
    schemes:
      - id: partner_id
        type: apiKey
        in: query
        name: ta_partner_id
        required: true
        description: >-
          Partner identifier issued by Tapad. Configured in the iOS SDK as the
          Info.plist key TapestryPartnerID and in the Android SDK via the
          TapestryClient constructor. Absent or unrecognized values return
          {"errors":["3|NoPartnerIdError"]} with HTTP 200.
        provisioning: manual, by Tapad (no self-service signup exists)
        rotation: not documented
      - id: referrer
        type: origin-check
        in: header
        name: Referer
        required: false
        description: >-
          The API validates the request referrer against the origin registered
          for the partner id; a mismatch returns error 2|BadReferrerError. This
          is a server-side control, not a credential the client chooses.
    device_identity_parameters:
      - ta_partner_did
      - ta_typed_did
      - ta_partner_user_id
    evidence:
      - url: https://tapestry.tapad.com/tapestry/1
        http_status: 200
        body: '{"errors":["3|NoPartnerIdError"]}'
        fetched: '2026-08-12'
      - url: https://tapestry.tapad.com/tapestry/1?ta_partner_id=1234&ta_get=
        http_status: 200
        body: '{"errors":["3|NoPartnerIdError"]}'
        fetched: '2026-08-12'
        note: >-
          A syntactically valid but unprovisioned partner id is rejected
          identically — proof that partner ids are allocated, not self-asserted.

  - api: event-tracking
    base_url: https://analytics.tapad.com/app/event
    transport: HTTPS GET beacon; responds 200 image/png (1x1 tracking pixel)
    schemes:
      - id: partner_id
        type: apiKey
        in: query
        name: ta_partner_id
        required: true
        description: >-
          Same partner identifier as the Tapestry API. Declared in
          com.tapad.tracking.EventResource in the Android SDK.
        provisioning: manual, by Tapad
    evidence:
      - url: https://analytics.tapad.com/app/event
        http_status: 200
        content_type: image/png
        fetched: '2026-08-12'

oauth: false
openid_connect: false
mutual_tls: false
docs: null
docs_note: >-
  No public authentication documentation is served. docs.tapad.com 301s to
  https://www.experian.com/marketing-knowledge-base/resolution, which states
  "This content is intended for Experian clients only."