This site takes a Envoy config and validates it for you. Run against actual Envoy binaries with multiple versions supported (1.16.2, 1.16.0, 1.14, 1.12)
It sends the config to a Lambda running Envoy in validate mode or against the config_load_check_tool and prints the results.
There is a 30 second timeout on the linter due to API Gateway limitations. Extremely large configs may reach that.
No and all sessions run on ephemeral Lambda containers. But it’s best to never send any sensitive data.