---
title: 2004: Unauthorized | API Docs
description: Missing or invalid authentication credentials.
---

Missing or invalid authentication credentials. This is an HTTP 401 error indicating your request did not include a valid authentication token.

## Troubleshooting

- Include a valid Bearer token in the `Authorization` header (e.g., `Authorization: Bearer your-api-key`)

## Related

- [Authentication](/getting-started/authentication/index.md)
- [Debugging](/guides/platform/debugging/index.md)