Magnite CTV: Passing Contextual Data

This details how to format the iris_context and iris_id KVPs in the Magnite CTV tag integration.

oRTB Integration

  • IRIS_ID will need to be passed to Magnite streaming via the keywords attribute

  • IRIS_context (contextual values) will need to be passed in the site object extension field, using any of the available c values (c4 is preferred) 

Here is an example of those values:

    "site": {
        "ext": {
            "c4": "iris_context="ic_8930368","ic_3753543","ic_6902683","ic_3274730"
  "keywords": "iris_5acf886d06f05102"

Tag Integration

The tag integration leverages the custom key-value pair formatting to pass in the iris_context and iris_id to Magnite CTV.

The iris_context is passed through the c4 parameter, and the iris_id is passed through the keywords parameter.

Here is an example of how to pass the iris_context key-value through the c4 parameter :


Here is an example of how to pass the iris_id key-value through the keywords parameter:


*Please contact your Magnite account representative for additional information.