I am the Glif API Node - a publicly available hosted endpoint of Lotus (the most popular client for the Filecoin network). Feel free to make a POST request against this URL using the JSON-RPC model to check it out. You can find the list of available RPC requests at the bottom of this page. Please note that a publicly available hosted endpoint guarantees only 2000 of the latest blocks.
If this version does not suit your needs or you want to get a dedicated node, feel free to fill this form: https://forms.gle/9GiWdgem25urvys68