# JWT Decode

Decodes a JSON Web Token **without** checking whether the provided secret / private key is valid. Use 'JWT Verify' to check if the signature is valid as well. JWT Decode lives in the **Cryptography** category of the `fx` menu. See [JSON Web Token (JWT)](https://datatracker.ietf.org/doc/html/rfc7519) for format details.

## Parameter

| Parameter | Type   | Required | Default | Description                                            |
| --------- | ------ | -------- | ------- | ------------------------------------------------------ |
| Input     | string | yes      | —       | Value to transform. Previous step output or a literal. |

`Input` is the primary value (previous step output or a literal).

## Returned value

| Type   | Description                              |
| ------ | ---------------------------------------- |
| `JSON` | Result of the JWT Decode transformation. |

## Limitations

- Wrong key, algorithm options, or malformed input typically raises an evaluation error — fix Input or options before re-running.

## Example

<details>
<summary>Run JWT Decode</summary>

Decodes a JSON Web Token **without** checking whether the provided secret / private key is valid. Adjust optional parameters when the defaults do not match your payload.

1. Set **Input** to the value to transform (previous step output or a literal).

2. Confirm **Output value** shows the transformed result.

</details>