diff --git a/tools/cli/internal/openapi/errors/pathConflictError.go b/tools/cli/internal/openapi/errors/pathConflictError.go
new file mode 100644
index 000000000..59fd5b8ae
--- /dev/null
+++ b/tools/cli/internal/openapi/errors/pathConflictError.go
@@ -0,0 +1,11 @@
+package errors
+
+import "fmt"
+
+type PathConflictError struct {
+	Entry string
+}
+
+func (e PathConflictError) Error() string {
+	return fmt.Sprintf("there was a conflict with the Path: %s", e.Entry)
+}
diff --git a/tools/cli/internal/openapi/openapi.go b/tools/cli/internal/openapi/openapi.go
new file mode 100644
index 000000000..5bdb95939
--- /dev/null
+++ b/tools/cli/internal/openapi/openapi.go
@@ -0,0 +1,13 @@
+package openapi
+
+import (
+	"github.com/tufin/oasdiff/load"
+)
+
+type Merger interface {
+	MergeOpenAPISpecs([]string) (*load.SpecInfo, error)
+}
+
+type Parser interface {
+	CreateOpenAPISpecFromPath(string) (*load.SpecInfo, error)
+}