diff --git a/tools/internal_ci/helper_scripts/prepare_build_linux_rc b/tools/internal_ci/helper_scripts/prepare_build_linux_rc
index 7b7db19389f8e7decc620c0df4b8fe411a4affb2..049db33ec36317f10984c611afec43b142aa8967 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_linux_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_linux_rc
@@ -15,6 +15,8 @@
 
 # Source this rc script to prepare the environment for linux builds
 
+tools/internal_ci/helper_scripts/gen_report_index.sh
+
 # Need to increase open files limit for c tests
 ulimit -n 32768
 
diff --git a/tools/internal_ci/helper_scripts/prepare_build_macos_rc b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
index 57463e6f6de6c25e87346502228302d1c1c06516..89e8e24351ceb2632b9ddfcba5a750bebe1518cb 100644
--- a/tools/internal_ci/helper_scripts/prepare_build_macos_rc
+++ b/tools/internal_ci/helper_scripts/prepare_build_macos_rc
@@ -15,6 +15,8 @@
 
 # Source this rc script to prepare the environment for macos builds
 
+tools/internal_ci/helper_scripts/gen_report_index.sh
+
 sudo launchctl limit maxfiles unlimited unlimited
 
 # show current maxfiles
diff --git a/tools/internal_ci/linux/grpc_basictests_c_cpp_dbg.cfg b/tools/internal_ci/linux/grpc_basictests_c_cpp_dbg.cfg
index ca547a0a4f776f57f34cfa28e444748c7ace78ae..4a0badf43bc77150b376755dc672797de14b4eb3 100644
--- a/tools/internal_ci/linux/grpc_basictests_c_cpp_dbg.cfg
+++ b/tools/internal_ci/linux/grpc_basictests_c_cpp_dbg.cfg
@@ -20,6 +20,7 @@ timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_basictests_c_cpp_opt.cfg b/tools/internal_ci/linux/grpc_basictests_c_cpp_opt.cfg
index 62f05cef2efe7018247c74ba2825d99052c54340..a2cfe021e165ca64d41410eb830a1fba6983ef4c 100644
--- a/tools/internal_ci/linux/grpc_basictests_c_cpp_opt.cfg
+++ b/tools/internal_ci/linux/grpc_basictests_c_cpp_opt.cfg
@@ -20,6 +20,7 @@ timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_basictests_multilang.cfg b/tools/internal_ci/linux/grpc_basictests_multilang.cfg
index be099d78c70212f4e7a33dcb4e433f8446823637..4433d14cd727c6603295fcd8eb84bd7753130cc6 100644
--- a/tools/internal_ci/linux/grpc_basictests_multilang.cfg
+++ b/tools/internal_ci/linux/grpc_basictests_multilang.cfg
@@ -20,6 +20,7 @@ timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_build_artifacts.cfg b/tools/internal_ci/linux/grpc_build_artifacts.cfg
index eb37b5b0cd6be9ed8c6ee9a486ecd124463fa996..88fc6b7b358333d90e0ec5dd18196681a2a10268 100644
--- a/tools/internal_ci/linux/grpc_build_artifacts.cfg
+++ b/tools/internal_ci/linux/grpc_build_artifacts.cfg
@@ -20,6 +20,7 @@ timeout_mins: 120
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
     regex: "github/grpc/artifacts/**"
   }
 }
diff --git a/tools/internal_ci/linux/grpc_interop_badserver_java.cfg b/tools/internal_ci/linux/grpc_interop_badserver_java.cfg
index 0aadb56c7c85bd62946045712e364b497450f5ee..dc2114273ea6f2326f5da05a28d88c90bb97f983 100644
--- a/tools/internal_ci/linux/grpc_interop_badserver_java.cfg
+++ b/tools/internal_ci/linux/grpc_interop_badserver_java.cfg
@@ -20,7 +20,7 @@ build_file: "grpc/tools/internal_ci/linux/grpc_interop_badserver_java.sh"
 timeout_mins: 480
 action {
   define_artifacts {
-    regex: "**/report.xml",
+    regex: "**/report.xml"
     regex: "github/grpc/reports/**"
   }
 }
diff --git a/tools/internal_ci/linux/grpc_interop_badserver_python.cfg b/tools/internal_ci/linux/grpc_interop_badserver_python.cfg
index 29c5c635f9abb9d8ecf1c792f3f49fdc7b9f3758..ec738fcf74adb14feab3b433d48229188fc52818 100644
--- a/tools/internal_ci/linux/grpc_interop_badserver_python.cfg
+++ b/tools/internal_ci/linux/grpc_interop_badserver_python.cfg
@@ -20,7 +20,7 @@ build_file: "grpc/tools/internal_ci/linux/grpc_interop_badserver_python.sh"
 timeout_mins: 480
 action {
   define_artifacts {
-    regex: "**/report.xml",
+    regex: "**/report.xml"
     regex: "github/grpc/reports/**"
   }
 }
diff --git a/tools/internal_ci/linux/grpc_interop_matrix.cfg b/tools/internal_ci/linux/grpc_interop_matrix.cfg
index 2fa3e8f897c651a61898e46eee990de971fbd80f..a7fd479a7342ca5760931f1816eb1ab682074558 100644
--- a/tools/internal_ci/linux/grpc_interop_matrix.cfg
+++ b/tools/internal_ci/linux/grpc_interop_matrix.cfg
@@ -21,5 +21,6 @@ timeout_mins: 60
 action {
   define_artifacts {
     regex: "**/sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
diff --git a/tools/internal_ci/linux/grpc_interop_tocloud.cfg b/tools/internal_ci/linux/grpc_interop_tocloud.cfg
index 0c31b497afef410185f1f01810ae76bd8893826f..c613f668d97354e75f0931ca23e70d649535a6ea 100644
--- a/tools/internal_ci/linux/grpc_interop_tocloud.cfg
+++ b/tools/internal_ci/linux/grpc_interop_tocloud.cfg
@@ -21,5 +21,6 @@ timeout_mins: 480
 action {
   define_artifacts {
     regex: "**/sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
diff --git a/tools/internal_ci/linux/grpc_interop_toprod.cfg b/tools/internal_ci/linux/grpc_interop_toprod.cfg
index 18978b87e55cf96cbe236a53376e4d5c969cd7b4..903480a3d18fa9f99927d17c94e892ee28d1bd42 100644
--- a/tools/internal_ci/linux/grpc_interop_toprod.cfg
+++ b/tools/internal_ci/linux/grpc_interop_toprod.cfg
@@ -21,6 +21,7 @@ timeout_mins: 60
 action {
   define_artifacts {
     regex: "**/sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_master.cfg b/tools/internal_ci/linux/grpc_master.cfg
index 8bcc668ba970be186add8d1f1195322a47c5e11a..a2784df297403251ee3232d6457ea09e531145d1 100644
--- a/tools/internal_ci/linux/grpc_master.cfg
+++ b/tools/internal_ci/linux/grpc_master.cfg
@@ -20,6 +20,7 @@ timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_portability.cfg b/tools/internal_ci/linux/grpc_portability.cfg
index c5bfd3bb40b39acd3453bd7a174e14a746b3155d..8c120be6b9ac8f921a0247a476df38a0de625b0b 100644
--- a/tools/internal_ci/linux/grpc_portability.cfg
+++ b/tools/internal_ci/linux/grpc_portability.cfg
@@ -20,6 +20,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_portability_build_only.cfg b/tools/internal_ci/linux/grpc_portability_build_only.cfg
index fce914c6121c7d147f790a1c1b80355fe98f3d34..501223c0c73009a76c70b0fb0b31707816de24a3 100644
--- a/tools/internal_ci/linux/grpc_portability_build_only.cfg
+++ b/tools/internal_ci/linux/grpc_portability_build_only.cfg
@@ -20,6 +20,7 @@ timeout_mins: 180
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_pull_request_sanity.cfg b/tools/internal_ci/linux/grpc_pull_request_sanity.cfg
index 6c76a929c0453bcec1aa4e029a0995665242fed7..b20d2ffba8e5f0951d5ec1ea879b30916bc29e03 100644
--- a/tools/internal_ci/linux/grpc_pull_request_sanity.cfg
+++ b/tools/internal_ci/linux/grpc_pull_request_sanity.cfg
@@ -20,6 +20,7 @@ timeout_mins: 30
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/grpc_sanity.cfg b/tools/internal_ci/linux/grpc_sanity.cfg
index 8dfeda0d4569c73429b4bd36b0f78aefbedf21af..24e7984f3a5ff0916963a122d39fd95939ea6cb2 100644
--- a/tools/internal_ci/linux/grpc_sanity.cfg
+++ b/tools/internal_ci/linux/grpc_sanity.cfg
@@ -20,6 +20,7 @@ timeout_mins: 20
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/grpc_c_asan.cfg b/tools/internal_ci/linux/sanitizer/grpc_c_asan.cfg
index c4beaacf6bb7f336d693179e74faaca3854f33ea..06a4372ce241c22499925dc26b33223fee95f8ea 100644
--- a/tools/internal_ci/linux/sanitizer/grpc_c_asan.cfg
+++ b/tools/internal_ci/linux/sanitizer/grpc_c_asan.cfg
@@ -20,6 +20,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/grpc_c_msan.cfg b/tools/internal_ci/linux/sanitizer/grpc_c_msan.cfg
index 0197966f32f90489ae4e47ff2537f285784c4f79..f875327c1b8c2bf496c958141ceec07db551414a 100644
--- a/tools/internal_ci/linux/sanitizer/grpc_c_msan.cfg
+++ b/tools/internal_ci/linux/sanitizer/grpc_c_msan.cfg
@@ -20,6 +20,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/grpc_c_tsan.cfg b/tools/internal_ci/linux/sanitizer/grpc_c_tsan.cfg
index 243eb99fbbbe07c1742ab9c8d523ea0eed473eae..6658a804d8961518e47dbc9811fd58ec17e99588 100644
--- a/tools/internal_ci/linux/sanitizer/grpc_c_tsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/grpc_c_tsan.cfg
@@ -20,6 +20,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/grpc_c_ubsan.cfg b/tools/internal_ci/linux/sanitizer/grpc_c_ubsan.cfg
index 24c7bf8a4c9312ee78832091aa4d97e165a0e28a..957a91ef2b4ade783675d52c90edf190c7150a84 100644
--- a/tools/internal_ci/linux/sanitizer/grpc_c_ubsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/grpc_c_ubsan.cfg
@@ -20,6 +20,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/grpc_cpp_asan.cfg b/tools/internal_ci/linux/sanitizer/grpc_cpp_asan.cfg
index f12366cb0a745909358e228baa7b9149174d2215..dbbfce90cb56a19cfe16fa12172063ee8e1febdc 100644
--- a/tools/internal_ci/linux/sanitizer/grpc_cpp_asan.cfg
+++ b/tools/internal_ci/linux/sanitizer/grpc_cpp_asan.cfg
@@ -20,6 +20,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/grpc_cpp_tsan.cfg b/tools/internal_ci/linux/sanitizer/grpc_cpp_tsan.cfg
index ca807aed163ae4d73232054b194e59caff5b2970..fb0cefa160698d2d219fc9cea88537e8a21f6a4c 100644
--- a/tools/internal_ci/linux/sanitizer/grpc_cpp_tsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/grpc_cpp_tsan.cfg
@@ -20,6 +20,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
index 98eb4d0139d7ba3bd597769530c2774e3ebceebc..649d93d0a1277e5be175361f272eec702713ad11 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_asan.cfg
@@ -21,6 +21,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
index e47762ca885e60b2844874c2683ac10cd3e58f72..d5ba2031fcbbc3cea600e2daa5bf5580106a10b9 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_msan.cfg
@@ -21,6 +21,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
index c3803aff5630dd5a43a64cce9b97002c35b3385d..67d4356821a339aaf96ecfc927b544c69d1b6ef3 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_tsan.cfg
@@ -21,6 +21,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
index 831cfb53ba43a1d6086fb0445afa6f7c73c7e766..c162d1d1d05995466ebb922958cf1e61028ff49a 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_c_ubsan.cfg
@@ -21,6 +21,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
index c3324431822b14f56d1c05724f17d5140d60a542..29f1fce5684c3e02900d4db4ae856a883ba8abb2 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_asan.cfg
@@ -21,6 +21,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
index 92cd93fcac825f5d9fb100075b6ed97f7d8790ec..331f73b3c7f56cf7b41519b6227cb2d9bf5dd222 100644
--- a/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
+++ b/tools/internal_ci/linux/sanitizer/pull_request/grpc_cpp_tsan.cfg
@@ -21,6 +21,7 @@ timeout_mins: 1440
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
 
diff --git a/tools/internal_ci/macos/grpc_build_artifacts.cfg b/tools/internal_ci/macos/grpc_build_artifacts.cfg
index 19993809478bce2b27d12043a09c937866d29b35..733933c62a66057d0dba61498a04e4166b38cbc3 100644
--- a/tools/internal_ci/macos/grpc_build_artifacts.cfg
+++ b/tools/internal_ci/macos/grpc_build_artifacts.cfg
@@ -20,6 +20,7 @@ timeout_mins: 120
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
     regex: "github/grpc/artifacts/**"
   }
 }
diff --git a/tools/internal_ci/macos/grpc_interop.cfg b/tools/internal_ci/macos/grpc_interop.cfg
index 25bac2f123d51972f10daa17ab73e62b4de0b711..9f3742c4864b34c9641ac896a824c66fc174c694 100644
--- a/tools/internal_ci/macos/grpc_interop.cfg
+++ b/tools/internal_ci/macos/grpc_interop.cfg
@@ -19,7 +19,7 @@ build_file: "grpc/tools/internal_ci/macos/grpc_interop.sh"
 timeout_mins: 240
 action {
   define_artifacts {
-    regex: "**/*sponge_log.xml",
+    regex: "**/*sponge_log.xml"
     regex: "github/grpc/reports/**"
   }
 }
diff --git a/tools/internal_ci/macos/grpc_master.cfg b/tools/internal_ci/macos/grpc_master.cfg
index 1c34979d01260293609394be2193ef8fcce238bc..24c021dfcc22fa78cb717e91f9d84b6869fc2661 100644
--- a/tools/internal_ci/macos/grpc_master.cfg
+++ b/tools/internal_ci/macos/grpc_master.cfg
@@ -20,5 +20,6 @@ timeout_mins: 240
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
diff --git a/tools/internal_ci/windows/grpc_build_artifacts.cfg b/tools/internal_ci/windows/grpc_build_artifacts.cfg
index da359ca05aeffa3debbfee84a669495a7ce3a0d9..38b0abd519be0d85e5e067599c0fdced3f89679a 100644
--- a/tools/internal_ci/windows/grpc_build_artifacts.cfg
+++ b/tools/internal_ci/windows/grpc_build_artifacts.cfg
@@ -20,6 +20,7 @@ timeout_mins: 120
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
     regex: "github/grpc/artifacts/**"
   }
 }
diff --git a/tools/internal_ci/windows/grpc_master.cfg b/tools/internal_ci/windows/grpc_master.cfg
index 80abea6c381e2adda3308dccb34d2fce51878ad6..786ebc019735366bc6a2e196ab259a324598b41c 100644
--- a/tools/internal_ci/windows/grpc_master.cfg
+++ b/tools/internal_ci/windows/grpc_master.cfg
@@ -20,5 +20,6 @@ timeout_mins: 360
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }
diff --git a/tools/internal_ci/windows/grpc_portability_master.cfg b/tools/internal_ci/windows/grpc_portability_master.cfg
index cb48d35de9e04c1ffb82686e3c5f96bd9d975e79..85f692725463999e90f7ce2fa51e73de7c1e1c94 100644
--- a/tools/internal_ci/windows/grpc_portability_master.cfg
+++ b/tools/internal_ci/windows/grpc_portability_master.cfg
@@ -20,5 +20,6 @@ timeout_mins: 360
 action {
   define_artifacts {
     regex: "**/*sponge_log.xml"
+    regex: "github/grpc/reports/**"
   }
 }