Examples:

Get a transaction by hash from the full node HTTP API:

curl http://x:api-key@127.0.0.1:14037/tx/\ 4674eb87021d9e07ff68cfaaaddfb010d799246b8f89941c58b8673386ce294f

Get a raw transaction by hash from the full node RPC API:

curl http://x:api-key@127.0.0.1:14037
-X POST
--data '{
"method": "getrawtransaction",
"params": [ "4674eb87021d9e07ff68cfaaaddfb010d799246b8f89941c58b8673386ce294f"]
}'

Get a transaction by hash from the "primary" wallet HTTP API:

curl http://x:api-key@127.0.0.1:14039/wallet/primary/tx/\ 4674eb87021d9e07ff68cfaaaddfb010d799246b8f89941c58b8673386ce294f

Get a transaction by hash from the wallet RPC API:

curl http://x:api-key@127.0.0.1:14039
-X POST
--data '{
"method": "gettransaction",
"params": [ "4674eb87021d9e07ff68cfaaaddfb010d799246b8f89941c58b8673386ce294f" ]
}'