diff --git a/exercises/practice/rest-api/.meta/template.j2 b/exercises/practice/rest-api/.meta/template.j2
index 01d25286..a445f181 100644
--- a/exercises/practice/rest-api/.meta/template.j2
+++ b/exercises/practice/rest-api/.meta/template.j2
@@ -47,20 +47,21 @@ expect {
 {% endfor %}
 {% endfor %}
 
+is_equivalent_to : Str, Str -> Try(Bool, _)
 is_equivalent_to = |result_json, expected_json| {
-    if expected_json.contains("\"users\"") {
-        expected : RestApi.Database
-        expected = Json.parse(expected_json)?
-        result : RestApi.Database
-        result = Json.parse(result_json)?
-        Ok(result == expected)
-    } else {
-        expected : RestApi.User
-        expected = Json.parse(expected_json)?
-        result : RestApi.User
-        result = Json.parse(result_json)?
-        Ok(result == expected)
-    }
+	if expected_json.contains("\"users\"") {
+		expected : RestApi.Database
+		expected = Json.parse(expected_json)?
+		result : RestApi.Database
+		result = Json.parse(result_json)?
+		Ok(result == expected)
+	} else {
+		expected : RestApi.User
+		expected = Json.parse(expected_json)?
+		result : RestApi.User
+		result = Json.parse(result_json)?
+		Ok(result == expected)
+	}
 }
 
 {{ macros.footer() }}
diff --git a/exercises/practice/rest-api/rest-api-test.roc b/exercises/practice/rest-api/rest-api-test.roc
index 4c53e32d..7053fdd2 100644
--- a/exercises/practice/rest-api/rest-api-test.roc
+++ b/exercises/practice/rest-api/rest-api-test.roc
@@ -1,6 +1,6 @@
 # These tests are auto-generated with test data from:
 # https://github.com/exercism/problem-specifications/tree/main/exercises/rest-api/canonical-data.json
-# File last updated on 2026-08-01
+# File last updated on 2026-08-15
 
 import RestApi exposing [get, post]
 
@@ -12,18 +12,18 @@ import RestApi exposing [get, post]
 expect {
 	database = { users: [] }
 	result_json = database
-		-> get({ url: "/users", payload: "" })?
+		|> get({ url: "/users", payload: "" })?
 	expected_json = "{\"users\": []}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 # add user
 expect {
 	database = { users: [] }
 	result_json = database
-		-> post({ url: "/add", payload: "{\"user\": \"Adam\"}" })?
+		|> post({ url: "/add", payload: "{\"user\": \"Adam\"}" })?
 	expected_json = "{\"balance\": 0.0, \"name\": \"Adam\", \"owed_by\": {}, \"owes\": {}}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 # get single user
@@ -45,9 +45,9 @@ expect {
 		],
 	}
 	result_json = database
-		-> get({ url: "/users", payload: "{\"users\": [\"Bob\"]}" })?
+		|> get({ url: "/users", payload: "{\"users\": [\"Bob\"]}" })?
 	expected_json = "{\"users\": [{\"balance\": 0.0, \"name\": \"Bob\", \"owed_by\": {}, \"owes\": {}}]}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 ##
@@ -73,9 +73,9 @@ expect {
 		],
 	}
 	result_json = database
-		-> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
+		|> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
 	expected_json = "{\"users\": [{\"balance\": 3.0, \"name\": \"Adam\", \"owed_by\": {\"Bob\": 3.0}, \"owes\": {}}, {\"balance\": -3.0, \"name\": \"Bob\", \"owed_by\": {}, \"owes\": {\"Adam\": 3.0}}]}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 # borrower has negative balance
@@ -107,9 +107,9 @@ expect {
 		],
 	}
 	result_json = database
-		-> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
+		|> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
 	expected_json = "{\"users\": [{\"balance\": 3.0, \"name\": \"Adam\", \"owed_by\": {\"Bob\": 3.0}, \"owes\": {}}, {\"balance\": -6.0, \"name\": \"Bob\", \"owed_by\": {}, \"owes\": {\"Adam\": 3.0, \"Chuck\": 3.0}}]}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 # lender has negative balance
@@ -141,9 +141,9 @@ expect {
 		],
 	}
 	result_json = database
-		-> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Adam\", \"lender\": \"Bob\"}" })?
+		|> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Adam\", \"lender\": \"Bob\"}" })?
 	expected_json = "{\"users\": [{\"balance\": -3.0, \"name\": \"Adam\", \"owed_by\": {}, \"owes\": {\"Bob\": 3.0}}, {\"balance\": 0.0, \"name\": \"Bob\", \"owed_by\": {\"Adam\": 3.0}, \"owes\": {\"Chuck\": 3.0}}]}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 # lender owes borrower
@@ -169,9 +169,9 @@ expect {
 		],
 	}
 	result_json = database
-		-> post({ url: "/iou", payload: "{\"amount\": 2.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
+		|> post({ url: "/iou", payload: "{\"amount\": 2.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
 	expected_json = "{\"users\": [{\"balance\": -1.0, \"name\": \"Adam\", \"owed_by\": {}, \"owes\": {\"Bob\": 1.0}}, {\"balance\": 1.0, \"name\": \"Bob\", \"owed_by\": {\"Adam\": 1.0}, \"owes\": {}}]}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 # lender owes borrower less than new loan
@@ -197,9 +197,9 @@ expect {
 		],
 	}
 	result_json = database
-		-> post({ url: "/iou", payload: "{\"amount\": 4.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
+		|> post({ url: "/iou", payload: "{\"amount\": 4.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
 	expected_json = "{\"users\": [{\"balance\": 1.0, \"name\": \"Adam\", \"owed_by\": {\"Bob\": 1.0}, \"owes\": {}}, {\"balance\": -1.0, \"name\": \"Bob\", \"owed_by\": {}, \"owes\": {\"Adam\": 1.0}}]}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
 # lender owes borrower same as new loan
@@ -225,11 +225,12 @@ expect {
 		],
 	}
 	result_json = database
-		-> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
+		|> post({ url: "/iou", payload: "{\"amount\": 3.0, \"borrower\": \"Bob\", \"lender\": \"Adam\"}" })?
 	expected_json = "{\"users\": [{\"balance\": 0.0, \"name\": \"Adam\", \"owed_by\": {}, \"owes\": {}}, {\"balance\": 0.0, \"name\": \"Bob\", \"owed_by\": {}, \"owes\": {}}]}"
-	result_json -> is_equivalent_to(expected_json)?
+	result_json |> is_equivalent_to(expected_json)?
 }
 
+is_equivalent_to : Str, Str -> Try(Bool, _)
 is_equivalent_to = |result_json, expected_json| {
 	if expected_json.contains("\"users\"") {
 		expected : RestApi.Database