> ## Documentation Index > Fetch the complete documentation index at: https://docs.pdfnoodle.com/llms.txt > Use this file to discover all available pages before exploring further. # Authentication To authenticate you need to add an *Authorization* header with the contents of the header being `Bearer pdfnoodle_api_123456789` where `pdforge_api_123456789` is your API Key. Example: ``` Authorization: Bearer pdfnoodle_api_123456789 ``` When you create your account, we'll automatically generate 2 API Keys for you, but you can create how many more you'd like. You can access them on the API Keys menu on the sidebar.