{
  "version":"2.0",
  "metadata":{
    "apiVersion":"2018-05-22",
    "endpointPrefix":"personalize-runtime",
    "jsonVersion":"1.1",
    "protocol":"rest-json",
    "serviceFullName":"Amazon Personalize Runtime",
    "serviceId":"Personalize Runtime",
    "signatureVersion":"v4",
    "signingName":"personalize",
    "uid":"personalize-runtime-2018-05-22"
  },
  "operations":{
    "GetPersonalizedRanking":{
      "name":"GetPersonalizedRanking",
      "http":{
        "method":"POST",
        "requestUri":"/personalize-ranking"
      },
      "input":{"shape":"GetPersonalizedRankingRequest"},
      "output":{"shape":"GetPersonalizedRankingResponse"},
      "errors":[
        {"shape":"InvalidInputException"},
        {"shape":"ResourceNotFoundException"}
      ],
      "documentation":"<p>Re-ranks a list of recommended items for the given user. The first item in the list is deemed the most likely item to be of interest to the user.</p> <note> <p>The solution backing the campaign must have been created using a recipe of type PERSONALIZED_RANKING.</p> </note>",
      "idempotent":true
    },
    "GetRecommendations":{
      "name":"GetRecommendations",
      "http":{
        "method":"POST",
        "requestUri":"/recommendations"
      },
      "input":{"shape":"GetRecommendationsRequest"},
      "output":{"shape":"GetRecommendationsResponse"},
      "errors":[
        {"shape":"InvalidInputException"},
        {"shape":"ResourceNotFoundException"}
      ],
      "documentation":"<p>Returns a list of recommended items. The required input depends on the recipe type used to create the solution backing the campaign, as follows:</p> <ul> <li> <p>RELATED_ITEMS - <code>itemId</code> required, <code>userId</code> not used</p> </li> <li> <p>USER_PERSONALIZATION - <code>itemId</code> optional, <code>userId</code> required</p> </li> </ul> <note> <p>Campaigns that are backed by a solution created using a recipe of type PERSONALIZED_RANKING use the API.</p> </note>",
      "idempotent":true
    }
  },
  "shapes":{
    "Arn":{
      "type":"string",
      "max":256,
      "pattern":"arn:([a-z\\d-]+):personalize:.*:.*:.+"
    },
    "AttributeName":{
      "type":"string",
      "max":150,
      "pattern":"[A-Za-z\\d_]+"
    },
    "AttributeValue":{
      "type":"string",
      "max":1000,
      "sensitive":true
    },
    "Context":{
      "type":"map",
      "key":{"shape":"AttributeName"},
      "value":{"shape":"AttributeValue"},
      "max":150
    },
    "ErrorMessage":{"type":"string"},
    "GetPersonalizedRankingRequest":{
      "type":"structure",
      "required":[
        "campaignArn",
        "inputList",
        "userId"
      ],
      "members":{
        "campaignArn":{
          "shape":"Arn",
          "documentation":"<p>The Amazon Resource Name (ARN) of the campaign to use for generating the personalized ranking.</p>"
        },
        "inputList":{
          "shape":"InputList",
          "documentation":"<p>A list of items (itemId's) to rank. If an item was not included in the training dataset, the item is appended to the end of the reranked list. The maximum is 500.</p>"
        },
        "userId":{
          "shape":"UserID",
          "documentation":"<p>The user for which you want the campaign to provide a personalized ranking.</p>"
        },
        "context":{
          "shape":"Context",
          "documentation":"<p>The contextual metadata to use when getting recommendations. Contextual metadata includes any interaction information that might be relevant when getting a user's recommendations, such as the user's current location or device type.</p>"
        }
      }
    },
    "GetPersonalizedRankingResponse":{
      "type":"structure",
      "members":{
        "personalizedRanking":{
          "shape":"ItemList",
          "documentation":"<p>A list of items in order of most likely interest to the user. The maximum is 500.</p>"
        }
      }
    },
    "GetRecommendationsRequest":{
      "type":"structure",
      "required":["campaignArn"],
      "members":{
        "campaignArn":{
          "shape":"Arn",
          "documentation":"<p>The Amazon Resource Name (ARN) of the campaign to use for getting recommendations.</p>"
        },
        "itemId":{
          "shape":"ItemID",
          "documentation":"<p>The item ID to provide recommendations for.</p> <p>Required for <code>RELATED_ITEMS</code> recipe type.</p>"
        },
        "userId":{
          "shape":"UserID",
          "documentation":"<p>The user ID to provide recommendations for.</p> <p>Required for <code>USER_PERSONALIZATION</code> recipe type.</p>"
        },
        "numResults":{
          "shape":"NumResults",
          "documentation":"<p>The number of results to return. The default is 25. The maximum is 500.</p>"
        },
        "context":{
          "shape":"Context",
          "documentation":"<p>The contextual metadata to use when getting recommendations. Contextual metadata includes any interaction information that might be relevant when getting a user's recommendations, such as the user's current location or device type.</p>"
        }
      }
    },
    "GetRecommendationsResponse":{
      "type":"structure",
      "members":{
        "itemList":{
          "shape":"ItemList",
          "documentation":"<p>A list of recommendations sorted in ascending order by prediction score. There can be a maximum of 500 items in the list.</p>"
        }
      }
    },
    "InputList":{
      "type":"list",
      "member":{"shape":"ItemID"}
    },
    "InvalidInputException":{
      "type":"structure",
      "members":{
        "message":{"shape":"ErrorMessage"}
      },
      "documentation":"<p>Provide a valid value for the field or parameter.</p>",
      "error":{"httpStatusCode":400},
      "exception":true
    },
    "ItemID":{
      "type":"string",
      "max":256
    },
    "ItemList":{
      "type":"list",
      "member":{"shape":"PredictedItem"}
    },
    "NumResults":{
      "type":"integer",
      "min":0
    },
    "PredictedItem":{
      "type":"structure",
      "members":{
        "itemId":{
          "shape":"ItemID",
          "documentation":"<p>The recommended item ID.</p>"
        },
        "score":{
          "shape":"Score",
          "documentation":"<p>A numeric representation of the model's certainty in the item's suitability. For more information on scoring logic, see <a>how-scores-work</a>.</p>"
        }
      },
      "documentation":"<p>An object that identifies an item.</p> <p>The and APIs return a list of <code>PredictedItem</code>s.</p>"
    },
    "ResourceNotFoundException":{
      "type":"structure",
      "members":{
        "message":{"shape":"ErrorMessage"}
      },
      "documentation":"<p>The specified resource does not exist.</p>",
      "error":{"httpStatusCode":404},
      "exception":true
    },
    "Score":{"type":"double"},
    "UserID":{
      "type":"string",
      "max":256
    }
  },
  "documentation":"<p/>"
}
