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JSONPath

Once an expression names an action, JSONPath is how you reach into that action's result. {{['GetClients']$.Content.documents.client[0].Name}} is a lookup followed by a path.

Paths accept dot notation, $.store.book[0].title, or bracket notation, $['store']['book'][0]['title']. Internal and output paths are always converted to bracket notation.

Operators​

SyntaxDescription
$The root object or element.
@The current object or element.
. or [ ]Child operator.
..Recursive descent.
*Wildcard. Every object or element, whatever its name.
[ ]Subscript operator, the native array operator in JSON.
[ , ]Union. Alternate names or array indices as a set.
[start : end : step]Array slice.
?()Applies a filter expression.
()Script expression, using the underlying script engine.

Filters use ?(<boolean expr>) with @ as the current object, as in $.store.book[?(@.price < 10)].title. Script expressions can stand in for an explicit name or index, as in $.store.book[(@.length-1)].title.

A worked example​

Every expression in the cheat sheet below runs against this result:

{
  "documents": {
    "client": [
      {
        "Id": "38ed55ac-cb45-4cbb-b89e-2f3cf480cb11",
        "Name": "Allbirds",
        "Code": "ABD",
        "HasContracts": false,
        "FullTimeEmployeeTime": 1800.0
      },
      {
        "Id": "3f826c2c-96c1-4d75-82d9-c29b4e50d4ef",
        "Name": "Amazon",
        "Code": "AMZ",
        "HasContracts": false,
        "FullTimeEmployeeTime": 0.0
      },
      {
        "Id": "682823e1-0651-4e8d-a655-ab3f8bcc8f6f",
        "Name": "Americanas",
        "Code": "",
        "HasContracts": false,
        "FullTimeEmployeeTime": 0.0
      }
    ]
  }
}
ExpressionResult
$.documents.client[*].NameThe names of every client.
$..NameEvery name, at any depth.
$.documents.*Everything under documents.
$.documents..CodeThe code of everything under documents.
$..client[2]The third client.
$..client[(@.length-1)] or $..client[-1:]The last client.
$..client[0,1] or $..client[:2]The first two clients.
$..client[?(@.Code)]Clients that have a code.
$..client[?(@.FullTimeEmployeeTime>1800)]Clients above 1800 full-time employee time.
$..client[?(@.Name=='Americanas')]Clients named Americanas.
$..client[?(@.Name=='Amazon' && @.Code=='AMZ')]Clients matching both conditions.
$..client[?(@.Name=='Amazon' || @.Code=='AMZ')]Clients matching either condition.
$..*Every member of the structure.

Preprocessors inside a path​

#eval() works inside a JSONPath expression, which lets a filter compare against a computed value:

$..client[?(@.Code=='#eval(#eval(NewDateUtc(Today) | AddDays(-1)))')]