Handler nodes

:::info Looking for the raw-code handler escape hatch? The old handler.customCode node has been removed. Raw JavaScript handlers are now written in a Handler Function node's "code" mode instead — see the Routing reference for how a Route attaches to one. :::

Send JSON — handler.sendJson

Responds with a JSON body and status code. Used inside a Handler Function's blueprint-mode body — a Route can no longer wire to Send JSON directly, only to a Handler Function.

• Inputs: in — "Request"; jsonBody (value, optional) — "JSON Body" — wire in any value-producing node (e.g. a Get Variable) to send its value as the response body instead of the static field below
• Outputs: none
• Config fields:

Key	Type	Default	Notes
statusCode	number	200	Falls back to 200 if not a finite number.
body	code (JSON value)	{}	A JSON-serializable value — this field holds actual data, not a JS expression string. Only used when the jsonBody pin is unwired.

res.status(200).json({ message: "Hello World" });

Wiring in a dynamic response body

Wire a value-producing node into the jsonBody pin and it's sent as the response instead of the "JSON Body" field — the field becomes disabled and shows "Wired" in the config panel while the pin stays connected. Unwire it and Send JSON goes back to sending whatever's typed in the field, exactly as before.

// jsonBody wired to a Get Variable node named "result"
res.status(200).json(result);