> For the complete documentation index, see [llms.txt](https://docs.bloxroute.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.bloxroute.com/getting-started/authorization-headers.md).

# Authorization

Every request to our service must include an `Authorization` header.

You can retrieve your Authorization header from the **Account Portal** under **Account Details**. Use this header for submitting transactions, accessing streams, and checking your account usage.

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