diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md
new file mode 100644
index 0000000..1bb064f
--- /dev/null
+++ b/CONTRIBUTING.md
@@ -0,0 +1,9 @@
+
+- When editing Go, please run `go fmt` before every commit.
+
+- When editing coffeescript (in the `proxy/` directory), please run
+  `cake lint` and resolve any lint issues before every commit.
+
+- You may run tests locally with either `go test` or `cake test` for Go and
+  coffeescript, respectively.
+