generated: '2026-08-12'
method: searched
source: >-
  https://raw.githubusercontent.com/prebid/Prebid.js/master/modules/yieldmoBidAdapter.js — the
  Prebid.js bid adapter Yieldmo authors and maintains, read verbatim on 2026-08-12. Yieldmo publishes
  no testing or sandbox documentation of its own; this is the only place a test environment is
  disclosed, and it is disclosed in open-source code rather than in docs.
caveat: >-
  There is NO sandbox for the DCS reporting API / MCP server (api.yieldmo.com/dcs/mcp). It has one
  environment, one Cognito pool, and no test-vs-live key separation of any kind. Everything below
  concerns the ad-serving exchange only.

test_vs_live:
  separation: environment-by-hostname, triggered by a page-URL token
  key_prefixes: null
  key_prefixes_note: >-
    No test/live credential split exists anywhere in Yieldmo's surface. Placement IDs are issued by
    account management and are not marked test or live; the reporting API uses one OAuth pool.
  environments:
    - name: production
      host: https://ads.yieldmo.com
      paths:
        - {path: /exchange/prebid, media_type: banner}
        - {path: /exchange/prebidvideo, media_type: video}
        - {path: /pbcas, purpose: Prebid cookie-assist user sync}
      constant: PROD_DOMAIN
    - name: stage
      host: https://ads-stg.yieldmo.com
      paths:
        - {path: /exchange/prebid, media_type: banner}
        - {path: /exchange/prebidvideo, media_type: video}
      constant: STAGE_DOMAIN
      access: unknown — the host is named in open-source code but Yieldmo publishes nothing about who may use it

trigger:
  mechanism: page URL substring
  token: pb_force_a
  implementation: |
    function isStage(bidderRequest) {
      return !!bidderRequest.refererInfo?.page?.includes('pb_force_a');
    }
  description: >-
    The adapter routes bid requests to ads-stg.yieldmo.com instead of ads.yieldmo.com whenever the
    page URL contains the substring "pb_force_a". There is no Prebid config flag, no setConfig
    option, and no documentation of this behaviour — it is a URL-token switch discoverable only by
    reading the adapter source.
  note: >-
    Because the switch keys on any page URL containing that substring, it is an environment selector
    a publisher can trip accidentally as well as deliberately.

test_values:
  published: false
  note: >-
    Yieldmo publishes no magic test placement IDs, no test creative IDs, and no simulator values.
    The only concrete identifier in the public documentation is the example placementId
    '825209316101005155' in the Prebid bidder table, which is documentation formatting rather than a
    working test value — do not use it as one.

fixtures_and_tooling:
  - name: Yieldmo QA app
    url: https://github.com/yieldmo/yieldmo-js-sdk/wiki/Using-Yieldmo-QA-app
    description: Advertiser-side QA tool referenced from the JS SDK wiki for previewing Yieldmo ad units.
    availability: wiki page exists; the app itself is not publicly distributed.
  - name: Creative format gallery (AdBuilder)
    url: https://formats.yieldmo.com/
    description: Live demo gallery of Yieldmo's ad formats. Publicly reachable (HTTP 200) and the closest thing to a playground Yieldmo offers.
  - name: SPA example page
    url: http://test.yieldmo.com/example_pages/publisher/infinite_scroll/request_pageview2.html
    description: Sample single-page-app integration referenced from the JS SDK wiki. Served over plain HTTP in the wiki link.
    availability: unverified this round.

test_clocks: false
time_simulation: false

x-evidence:
  fetched: '2026-08-12'
  probes:
    - {url: 'https://raw.githubusercontent.com/prebid/Prebid.js/master/modules/yieldmoBidAdapter.js', status: 200}
    - {url: 'https://formats.yieldmo.com/', status: 200}
    - {url: 'https://api.yieldmo.com/dcs/mcp', status: 401, note: single environment, no sandbox variant found}