FIO Chain Getter API offers multiple endpoints design to return information about the FIO Chain or specific FIO Handles, FIO Requests, FIO Data, NFT Signatures, or FIO Chain accounts.
All endpoints are REST API of type POST taking json as body and returning json in response.
No authentication is required.
There are many FIO Chain API servers ran by Block Producers and other entities. For latest server API urls, see https://github.com/fioprotocol/fio.mainnet#fio-api
Here's a couple used on this site:
Please note the v1 is static and does not represent the API version.