See code changes and v3.5 upgrade guide for any breaking changes.
/v3 endpoint.
/v3beta.curl -L http://localhost:2379/v3beta/kv/put -X POST -d '{"key": "Zm9v", "value": "YmFy"}' does work in v3.5. Use curl -L http://localhost:2379/v3/kv/put -X POST -d '{"key": "Zm9v", "value": "YmFy"}' instead./v3 endpoint.
/v3beta.curl -L http://localhost:2379/v3beta/kv/put -X POST -d '{"key": "Zm9v", "value": "YmFy"}' does work in v3.5. Use curl -L http://localhost:2379/v3/kv/put -X POST -d '{"key": "Zm9v", "value": "YmFy"}' instead.