diff --git a/pkg/plugin/definition/schemaValidator.go b/pkg/plugin/definition/schemaValidator.go
new file mode 100644
index 0000000..dc69ca5
--- /dev/null
+++ b/pkg/plugin/definition/schemaValidator.go
@@ -0,0 +1,16 @@
+package definition
+
+import (
+	"context"
+	"net/url"
+)
+
+// SchemaValidator interface for schema validation.
+type SchemaValidator interface {
+	Validate(ctx context.Context, url *url.URL, payload []byte) error
+}
+
+// SchemaValidatorProvider interface for creating validators.
+type SchemaValidatorProvider interface {
+	New(ctx context.Context, config map[string]string) (SchemaValidator, func() error, error)
+}