n8n LabBeginner
Convert an Object to a JSON String in n8n
An API expects a 'metadata' field that contains JSON as a string, not as an object.
Live Execution Simulator
Idle
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Incoming Data
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n8n Node
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Next Step
> Ready. Type your expression below and click "Check Answer" to run the node.
Incoming Payload / Data:
{
"payload": { "plan": "pro", "seats": 5 }
}
⚙️ Your expression is executed against test data — any correct solution passes. +10 XP
✅ Solution & explanation
JSON.stringify($json.payload)
Output: "{\"plan\":\"pro\",\"seats\":5}"
JSON.stringify() turns an object into text. It's the reverse of JSON.parse().💡 Pro tip: Pretty-print for Slack or email: JSON.stringify($json.payload, null, 2).