There is a limit to the number of API calls an app can make within a given time period:

When this limit is exceeded, the app or user may be throttled. API requests made by a throttled user or app will fail. However, these are not hard limits: Medallia limits the number of API calls per company to prevent unintended bugs in API client code or malicious code from taking down production systems.

Additionally, Query API calls have a cost: all API requests are subject to cost limits, and are throttled once the following limits are reached:

Cost is a measurement representing how much the query will impact the system. The higher the cost, the greater the impact, which can result in slowing the performance of reports and other activities. When the cost is too high, the system automatically rejects the query. For more details on how to track query cost, see Response headers.

When queries fetch Feedback and Invitations data, the cost is primarily impacted by the page size — the value of the first parameter — and the number of fields in the query: the cost of the query increases with the size of the page and the number of fields queried. See Pagination and Data queries for information about page sizes and data sources.

Use the cost calculation as a heuristic to improve and optimize queries, and to avoid exceeding the limit.

query getData{
    …
    rateLimit{ cost }           # Query cost
    …
}

https://example.apis.medallia.com/data/v0/query?compute_cost_only=true

Sample query with cost calculation

query myQueryName {
  rateLimit { cost }
  feedback (
    orderBy: {fieldId: "a_surveyid", direction: ASC}
    first: 3
  ){
    nodes {
      surveyId: id
      user_email: fieldData(fieldId: "e_email") {
        values
      }
    }
    totalCount
  }
}

Sample response

{
  "data": {
    "rateLimit": {
      "cost": 14
    },
    "feedback": {
      "nodes": [
        {
          "surveyId": "3725",
          "user_email": {
            "values": [
              "jeremy.pierce@customer.example.com"
            ]
          }
        },
        {
          "surveyId": "3726",
          "user_email": {
            "values": [
              "matthew.gibson@customer.example.com"
            ]
          }
        },
        {
          "surveyId": "3727",
          "user_email": {
            "values": [
              "teresa.stevens@customer.example.com"
            ]
          }
        }
      ],
      "totalCount": 98135
    }
  },
  "errors": null,
  "_links": null,
  "_allowed": [
    "POST",
    "GET"
  ]
}