Ask HN: Is there a visual data mapper for JSON transformation?

For building integrations between APIs I'm often faced with stichting those apis together and transforming the data.

Situation: I have some source json, from some APIs/webhooks and some target json how I need to send it out

Complication: I need to transform it and re-map the fields. Depending on the complexity of the objects that might require some fiddling

Solution: I'd love a visual data mapper that allows me to

1. see the source and target spec 2. example values maybe even API descriptions 3. create simple transformation with Type/Javascript, JQ, JMESpath or similar 4. connect the target and source values visually 5. documentation - the visual aspect is important to help readers, as this is easier to understand/digest the integration, not only "build" it. Also it serves as a kind of todo-list. It's easy to see if something isn't mapped yet.

Any recommendations?