# Further Information This library uses the following api: to verify the hashes and fingerprints for http2 and ja3. Be aware that also peets api does not show every extension/cipher a TLS client is using. Do not rely just on ja3 strings. The API does not include the GREASE Extenson into the ja3 string. It’s omitted on purpose. Always have a look at the extension list and not only on the ja3 string. Show some love for peet here: If you appreciate my work feel free to [buy me a coffee](https://www.buymeacoffee.com/CaptainBarnius) or donate some money to charity. --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://bogdanfinn.gitbook.io/open-source-oasis/further-information.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.