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    API Calls with VBA: Accessing External Data Sources

    Call REST APIs from Excel VBA: authentication, headers, JSON parsing, and pagination basics.

    VBA AI Team
    Published on August 17, 2025
    15 min read

    API Calls with VBA: Accessing External Data Sources

    Consume REST APIs to bring data into Excel.


    GET with headers

    Function ApiGet(ByVal url As String, ByVal bearer As String) As String Dim x As Object: Set x = CreateObject("MSXML2.XMLHTTP") x.Open "GET", url, False x.setRequestHeader "Authorization", "Bearer " & bearer x.setRequestHeader "Accept", "application/json" x.send If x.Status = 200 Then ApiGet = x.responseText Else ApiGet = "" End Function

    Parse JSON and map fields to columns. Handle pagination and rate limits.

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