diff --git a/catalyst-gateway/.gitignore b/catalyst-gateway/.gitignore
index 92e534b054..8111f6ae51 100644
--- a/catalyst-gateway/.gitignore
+++ b/catalyst-gateway/.gitignore
@@ -13,3 +13,4 @@ target/
 # Build artifacts
 cat-gateway.coverage-report.info
 cat-gateway.junit-report.xml
+cat-gateway-api.*
\ No newline at end of file
diff --git a/catalyst-gateway/Earthfile b/catalyst-gateway/Earthfile
index 91aec11f4b..e2849c6914 100644
--- a/catalyst-gateway/Earthfile
+++ b/catalyst-gateway/Earthfile
@@ -84,3 +84,9 @@ package-cat-gateway-with-preprod-snapshot:
 # Publish packages if all integration tests have passed. (Failure to pass tests will prevent packages being published.)
 # publish:
 #    FROM scratch
+
+# get-api-locally : Get a copy of the OpenAPI json document locally.
+get-api-locally:
+    FROM scratch
+    COPY +build/doc/cat-gateway-api.json cat-gateway-api.json
+    SAVE ARTIFACT cat-gateway-api.json AS LOCAL cat-gateway-api.json
\ No newline at end of file