> ## Documentation Index
> Fetch the complete documentation index at: https://nocode-docs.zeroagent.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Build json

The Build JSON block is used to create a structured JSON object consisting of key-value pairs. This block is essential when you need to construct JSON objects dynamically within your workflow. Each key in the JSON object can be paired with a value of any supported data type, allowing for flexible and complex data structures.

<img src="https://mintcdn.com/zeromagiclabsprivatelimited/FNI2lo67ZZ_e31YS/assets/images/json-var.png?fit=max&auto=format&n=FNI2lo67ZZ_e31YS&q=85&s=0b6e7a3bd54246fad3ba5798ffa91d6e" alt="json" width="708" height="233" data-path="assets/images/json-var.png" />

```jsx Example JSON theme={null}
{
  "userId": 123,
  "firstName": "John",
  "lastName": "Doe",
  "email": "john.doe@example.com"
}
```

<Tip>
  The Response block specifically requires a JSON object to function correctly. By using the Build JSON block, you ensure that your workflow outputs are properly formatted as JSON.
</Tip>

### Key features of the Build JSON block include

* **Dynamic Key-Value Pairing:** Easily create JSON objects with multiple key-value pairs, where the keys are strings, and the values can be any supported data type (text, number, boolean, list, time).

* **Nested JSON Objects:** Supports creating nested JSON objects, enabling you to build intricate data structures as needed.

* **Integration with Other Blocks:** You can pull in values from other blocks within the workflow, ensuring that your JSON object is dynamically constructed based on the outputs of preceding actions.