I've used jsonsprc a few times and my experience was excellent (opposite to GraphQL, actually). But the jsonrpc endpoint had good documentation and the client

I've used jsonsprc a few times and my experience was excellent (opposite to GraphQL, actually). But the jsonrpc endpoint had good documentation and the client library didn't feel alien to the project, like a big query string embedded in the client code. I wonder why jsonrpc is not used more often; but I guess compared to a REST API, the client may be more complicated.