diff --git a/go.mod b/go.mod
new file mode 100644
index 0000000..24e187a
--- /dev/null
+++ b/go.mod
@@ -0,0 +1,8 @@
+module github.com/modelcontextprotocol/go-sdk
+
+go 1.23.0
+
+require (
+	github.com/google/go-cmp v0.7.0
+	golang.org/x/tools v0.34.0
+)
diff --git a/go.sum b/go.sum
new file mode 100644
index 0000000..6c6c2a5
--- /dev/null
+++ b/go.sum
@@ -0,0 +1,4 @@
+github.com/google/go-cmp v0.7.0 h1:wk8382ETsv4JYUZwIsn6YpYiWiBsYLSJiTsyBybVuN8=
+github.com/google/go-cmp v0.7.0/go.mod h1:pXiqmnSA92OHEEa9HXL2W4E7lf9JzCmGVUdgjX3N/iU=
+golang.org/x/tools v0.34.0 h1:qIpSLOxeCYGg9TrcJokLBG4KFA6d795g0xkBkiESGlo=
+golang.org/x/tools v0.34.0/go.mod h1:pAP9OwEaY1CAW3HOmg3hLZC5Z0CCmzjAF2UQMSqNARg=