diff --git a/static/robots.txt b/static/robots.txt
new file mode 100644
index 0000000..c7ede5b
--- /dev/null
+++ b/static/robots.txt
@@ -0,0 +1,17 @@
+User-agent: *
+# Start by disallowing everything.
+Disallow: /
+# Some specific things are okay, though.
+Allow: /$
+Allow: /hosting
+Allow: /p/*/adminIntro
+# Allow files needed to render the new UI
+Allow:  /prpc/*
+Allow:  /static/*
+# Query strings are hard. We only allow ?id=N, no other parameters.
+Allow: /p/*/issues/detail?id=*
+Allow: /p/*/issues/detail_ezt?id=*
+Disallow: /p/*/issues/detail?id=*&*
+Disallow: /p/*/issues/detail?*&id=*
+# 10 second crawl delay for bots that honor it.
+Crawl-delay: 10