diff --git a/examples/json-schema-to-grammar.py b/examples/json-schema-to-grammar.py
index 9a5d3083e..27ad2871f 100755
--- a/examples/json-schema-to-grammar.py
+++ b/examples/json-schema-to-grammar.py
@@ -341,15 +341,14 @@ class SchemaConverter:
                 rule_name,
                 f'( {kv_rule} ( "," space {kv_rule} )* )*')
 
-        elif schema_type in (None, 'array') and 'items' in schema:
-            # TODO `prefixItems` keyword
-            items = schema['items']
+        elif schema_type in (None, 'array') and ('items' in schema or 'prefixItems' in schema):
+            items = schema.get('items') or schema['prefixItems']
             if isinstance(items, list):
                 return self._add_rule(
                     rule_name,
                     '"[" space ' +
                     ' "," space '.join(
-                        self.visit(item, f'{name}-{i}')
+                        self.visit(item, f'{name}{"-" if name else ""}tuple-{i}')
                         for i, item in enumerate(items)) +
                     ' "]" space')
             else:
diff --git a/examples/server/json-schema-to-grammar.mjs.hpp b/examples/server/json-schema-to-grammar.mjs.hpp
index 1ae342b5f..24906da2a 100644
--- a/examples/server/json-schema-to-grammar.mjs.hpp
+++ b/examples/server/json-schema-to-grammar.mjs.hpp
@@ -1091,410 +1091,416 @@ unsigned char json_schema_to_grammar_mjs[] = {
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 };
-unsigned int json_schema_to_grammar_mjs_len = 17957;
+unsigned int json_schema_to_grammar_mjs_len = 18031;
diff --git a/examples/server/public/json-schema-to-grammar.mjs b/examples/server/public/json-schema-to-grammar.mjs
index b03b3759a..ed3beb26a 100644
--- a/examples/server/public/json-schema-to-grammar.mjs
+++ b/examples/server/public/json-schema-to-grammar.mjs
@@ -366,14 +366,13 @@ export class SchemaConverter {
       const valueRule = this.visit(additionalProperties, `${subName}-value`);
       const kvRule = this._addRule(`${subName}-kv`, `string ":" space ${valueRule}`);
       return this._addRule(ruleName, `( ${kvRule} ( "," space ${kvRule} )* )*`);
-    } else if ((schemaType === undefined || schemaType === 'array') && 'items' in schema) {
-      // TODO `prefixItems` keyword
-      const items = schema.items;
+    } else if ((schemaType === undefined || schemaType === 'array') && ('items' in schema || 'prefixItems' in schema)) {
+      const items = schema.items ?? schema.prefixItems;
       if (Array.isArray(items)) {
         return this._addRule(
           ruleName,
           '"[" space ' +
-            items.map((item, i) => this.visit(item, `${name}-${i}`)).join(' "," space ') +
+            items.map((item, i) => this.visit(item, `${name}${name ? '-' : ''}tuple-${i}`)).join(' "," space ') +
             ' "]" space'
         );
       } else {