diff --git a/.changeset/infrastructure-setup.md b/.changeset/infrastructure-setup.md
new file mode 100644
index 000000000..1c6a724ae
--- /dev/null
+++ b/.changeset/infrastructure-setup.md
@@ -0,0 +1,24 @@
+---
+"@objectstack/spec": patch
+"@objectstack/cli": patch
+"@objectstack/core": patch
+"@objectstack/client": patch
+"@objectstack/client-react": patch
+"@objectstack/types": patch
+"@objectstack/metadata": patch
+"@objectstack/objectql": patch
+"@objectstack/runtime": patch
+"@objectstack/driver-memory": patch
+"@objectstack/plugin-hono-server": patch
+"@objectstack/plugin-msw": patch
+"@objectstack/docs": patch
+---
+
+Infrastructure and development tooling improvements
+
+- Add changeset configuration for automated version management
+- Add comprehensive GitHub Actions workflows (CI, CodeQL, linting, releases)
+- Add development configuration files (.cursorrules, .github/prompts)
+- Add documentation files (ARCHITECTURE.md, CONTRIBUTING.md, workflows docs)
+- Update test script configuration in package.json
+- Add @objectstack/cli to devDependencies for better development experience