diff --git a/packages/extension-form/src/internal/guards.ts b/packages/extension-form/src/internal/guards.ts
new file mode 100644
index 0000000..73fd7c5
--- /dev/null
+++ b/packages/extension-form/src/internal/guards.ts
@@ -0,0 +1,14 @@
+import { Array, Predicate, Record, Schema } from "effect"
+
+
+export const isStruct = (u: unknown): u is Schema.Struct<any> => (
+    Schema.isSchema(u) &&
+    Predicate.hasProperty(u, "fields") && Predicate.isObject(u.fields) &&
+    Predicate.hasProperty(u, "record") && Array.isArray(u.record) && Array.isEmptyArray(u.record)
+)
+
+export const isRecord = (u: unknown): u is Schema.Record$<any, any> => (
+    Schema.isSchema(u) &&
+    Predicate.hasProperty(u, "fields") && Predicate.isObject(u.fields) && Record.isEmptyRecord(u.fields) &&
+    Predicate.hasProperty(u, "record") && Array.isArray(u.record)
+)