diff --git a/makefiles/lint/groovy/README.md b/makefiles/lint/groovy/README.md
new file mode 100644
index 0000000..aa9b41a
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+++ b/makefiles/lint/groovy/README.md
@@ -0,0 +1,13 @@
+# lint: groovy source
+
+# Invoke the linting tool
+% make lint-groovy
+
+# Alt checking: groovy interpreter
+
+Odd syntax errors can be detected by the groovy interpreter.
+
+% groovy path/to/{source}.groovy
+
+jjb/ pipeline scripts will eventually due to syntax problems but groovy can
+still detect problems like mismatched quotes, invalid op tokens, etc.
diff --git a/makefiles/lint/groovy/urls b/makefiles/lint/groovy/urls
new file mode 100644
index 0000000..aa5c5eb
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+++ b/makefiles/lint/groovy/urls
@@ -0,0 +1,8 @@
+# -*- makefile -*-
+
+# Config file and exclusions
+https://www.npmjs.com/package/npm-groovy-lint#Configuration
+
+https://github.com/nvuillam/npm-groovy-lint
+
+# [EOF]