Trino server does not seem to have an official OpenApi/Swagger like json documentation, but you can check following pages:

• External connector to providing this (have not tried): https://github.com/nineinchnick/trino-openapi

• https://trino.io/docs/current/develop/client-protocol.html

• https://trino.io/docs/current/client.html

• https://github.com/trinodb/trino-gateway/blob/main/docs/gateway-api.md