JQ

JQ is a lightweight processing language for manipulation of JSON objects. It is often used to look up specific nodes from a payload, but can also be used to transform the data.

The Unmeshed JQ engine is compatible with JQ version 1.6.

Input

Field	Description	Mandatory	JSON Example
input	The JSON data to manipulate.	✔	{ "version": 12 }
script	The JQ expression to run against the provided input.	✔	".version"

Output

Field	Description
transformed	A JSON object containing the processed input.

Example

Here's an example that uses JQ syntax to get all the nationalities of best-selling authors published after 2019.

Input

{
    "bestsellers": [
        {
            "title": "Where the Crawdads Sing",
            "author": {
                "name": "Delia Owens",
                "nationality": "American"
            },
            "published_year": 2018,
        },
        {
            "title": "The Midnight Library",
            "author": {
                "name": "Matt Haig",
                "nationality": "British"
            },
            "published_year": 2020,
        }
    ]
}

Script

.bestsellers[] | select(.published_year > 2019) | .author.nationality

Result

[ "British" ]

tip

To use another Step's output as the input for the JQ Step, use the following template syntax:

{{ steps.your_steps_ref.output.fieldName }}