diff --git a/y2023/constants/json_codegen.cc b/y2023/constants/json_codegen.cc
new file mode 100644
index 0000000..fc08df1
--- /dev/null
+++ b/y2023/constants/json_codegen.cc
@@ -0,0 +1,25 @@
+#include "aos/util/file.h"
+#include "y2023/constants.h"
+
+using namespace y2023::constants;
+
+// This file generates some JSON constants information that is currently
+// dependent on values that are located in C++ headers and would be
+// obnoxious/inappropriate to pull out.
+int main(int argc, char *argv[]) {
+  CHECK_EQ(argc, 2) << "Must supply file name to output to.";
+  std::string output_file = argv[1];
+
+  std::stringstream output;
+
+  output << "\"average_filter_size\": " << Values::kZeroingSampleSize << ",\n";
+  output << "\"one_revolution_distance\": "
+         << M_PI * 2.0 * Values::kCompWristEncoderRatio() << ",\n";
+  output << "\"zeroing_threshold\": 0.0005,\n";
+  output << "\"moving_buffer_size\": 20,\n";
+  output << "\"allowable_encoder_error\": 0.9,\n";
+  output << "\"middle_position\": " << Values::kCompWristRange().middle()
+         << "\n";
+  aos::util::WriteStringToFileOrDie(output_file, output.str());
+  return 0;
+}