> ## Documentation Index
> Fetch the complete documentation index at: https://replyke-feat-push-rich-payload-fields.mintlify.site/llms.txt
> Use this file to discover all available pages before exploring further.

# Sign Testing JWT

> Generate a signed JWT for testing purposes

Generate a signed JWT for testing purposes using a provided private key, project ID, and payload.

<Warning>
  This endpoint is intended for testing and should not be exposed in production environments.
</Warning>

## Body Parameters

<ParamField body="projectId" type="string" required>
  Project ID to use as the token issuer
</ParamField>

<ParamField body="privateKey" type="string" required>
  Private key in base64-encoded PEM format
</ParamField>

<ParamField body="payload" type="object" required>
  Payload to embed in the token. Must include an `id` field

  <Expandable title="properties">
    <ParamField body="id" type="string" required>
      User identifier (will be used as the `sub` in the JWT)
    </ParamField>

    <ParamField body="name" type="string">
      Optional user name
    </ParamField>

    <ParamField body="role" type="string">
      Optional user role
    </ParamField>
  </Expandable>
</ParamField>

## Response

Returns a signed JWT string:

<ResponseField name="token" type="string">
  The signed JWT token
</ResponseField>

## Error Responses

<AccordionGroup>
  <Accordion title="Missing Params - 400 Bad Request">
    ```json theme={null}
    {
      "error": "Missing user id in payload.",
      "code": "crypto/missing-params"
    }
    ```
  </Accordion>

  <Accordion title="Server Error - 500 Internal Server Error">
    ```json theme={null}
    {
      "error": "Internal server error",
      "code": "crypto/server-error",
      "details": "<Error message>"
    }
    ```
  </Accordion>
</AccordionGroup>

***

## Notes

* **For testing purposes only** - do not expose in production
* The `payload` must contain an `id` field which will be used as the `sub` in the JWT
* The signed token uses the RS256 algorithm and is valid for 5 minutes
* The audience (`aud`) is set to `replyke.com`
* No authentication required (intentionally, for testing)
* Use this endpoint to generate test tokens for local development