diff --git a/.github/actions/cache/action.yml b/.github/actions/cache/action.yml
index c6a0db5f33..86f733c4c8 100644
--- a/.github/actions/cache/action.yml
+++ b/.github/actions/cache/action.yml
@@ -4,7 +4,7 @@ description: Restore cached dependencies.
 
 inputs:
   job:
-    description: 'The job that requires this composite'
+    description: The job that requires this composite
     required: true
 
 runs:
diff --git a/.github/actions/setup/action.yml b/.github/actions/setup/action.yml
index 58dc08e778..fa2c370f4e 100644
--- a/.github/actions/setup/action.yml
+++ b/.github/actions/setup/action.yml
@@ -54,47 +54,47 @@ runs:
 outputs:
   # specs variables
   RUN_SPECS_SEARCH:
-    description: 'Determine if the `specs_search` job should run'
+    description: Determine if the `specs_search` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.SEARCH_SPECS_CHANGED > 0 }}
   RUN_SPECS_RECOMMEND:
-    description: 'Determine if the `specs_recommend` job should run'
+    description: Determine if the `specs_recommend` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.RECOMMEND_SPECS_CHANGED > 0 }}
   RUN_SPECS_QS:
-    description: 'Determine if the `specs_qs` job should run'
+    description: Determine if the `specs_qs` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.QS_SPECS_CHANGED > 0 }}
   RUN_SPECS_PERSO:
-    description: 'Determine if the `specs_perso` job should run'
+    description: Determine if the `specs_perso` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.PERSO_SPECS_CHANGED > 0 }}
   RUN_SPECS_INSIGHTS:
-    description: 'Determine if the `specs_insights` job should run'
+    description: Determine if the `specs_insights` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.INSIGHTS_SPECS_CHANGED > 0 }}
   RUN_SPECS_ANALYTICS:
-    description: 'Determine if the `specs_analytics` job should run'
+    description: Determine if the `specs_analytics` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.ANALYTICS_SPECS_CHANGED > 0 }}
   RUN_SPECS_AB:
-    description: 'Determine if the `specs_ab` job should run'
+    description: Determine if the `specs_ab` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.AB_SPECS_CHANGED > 0 }}
 
   # js client variables
   RUN_JS_CLIENT_SEARCH:
-    description: 'Determine if the `client_javascript_search` job should run'
+    description: Determine if the `client_javascript_search` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.SEARCH_SPECS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.JS_SEARCH_CLIENT_CHANGED > 0 || steps.diff.outputs.JS_TEMPLATE_CHANGED > 0 }}
   RUN_JS_CLIENT_RECOMMEND:
-    description: 'Determine if the `client_javascript_recommend` job should run'
+    description: Determine if the `client_javascript_recommend` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.RECOMMEND_SPECS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.JS_RECOMMEND_CLIENT_CHANGED > 0 || steps.diff.outputs.JS_TEMPLATE_CHANGED > 0 }}
   RUN_JS_CLIENT_PERSO:
-    description: 'Determine if the `client_javascript_perso` job should run'
+    description: Determine if the `client_javascript_perso` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.PERSO_SPECS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.JS_PERSO_CLIENT_CHANGED > 0 || steps.diff.outputs.JS_TEMPLATE_CHANGED > 0 }}
   RUN_JS_CLIENT_ANALYTICS:
-    description: 'Determine if the `client_javascript_analytics` job should run'
+    description: Determine if the `client_javascript_analytics` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.ANALYTICS_SPECS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.JS_ANALYTICS_CLIENT_CHANGED > 0 || steps.diff.outputs.JS_TEMPLATE_CHANGED > 0 }}
 
   # java client variables
   RUN_JAVA_CLIENT:
-    description: 'Determine if the `client_java_*` job should run'
+    description: Determine if the `client_java_*` job should run
     value: ${{ github.ref == 'refs/heads/main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.COMMON_SPECS_CHANGED > 0 || steps.diff.outputs.SEARCH_SPECS_CHANGED > 0 || steps.diff.outputs.SCRIPTS_CHANGED > 0 || steps.diff.outputs.JAVA_CLIENT_CHANGED > 0 || steps.diff.outputs.JAVA_TEMPLATE_CHANGED > 0 }}
 
   # cts variables
   RUN_CTS:
-    description: 'Determine if the `cts` job should run'
+    description: Determine if the `cts` job should run
     value: ${{ github.ref_name == 'main' || steps.diff.outputs.GITHUB_ACTIONS_CHANGED > 0 || steps.diff.outputs.SPECS_CHANGED > 0 || steps.diff.outputs.TESTS_CHANGED > 0 || steps.diff.outputs.JS_CLIENT_CHANGED > 0 || steps.diff.outputs.JS_TEMPLATE_CHANGED > 0 || steps.diff.outputs.JAVA_CLIENT_CHANGED > 0 || steps.diff.outputs.JAVA_TEMPLATE_CHANGED > 0 }}
diff --git a/.github/workflows/check.yml b/.github/workflows/check.yml
index 83cecf9a00..c7ff569a5f 100644
--- a/.github/workflows/check.yml
+++ b/.github/workflows/check.yml
@@ -22,6 +22,9 @@ jobs:
       - name: Setup
         id: setup
         uses: ./.github/actions/setup
+
+      - name: Lint GitHub actions
+        run: yarn eslint --ext=yml .github/actions .github/workflows
     outputs:
       RUN_SPECS_SEARCH: ${{ steps.setup.outputs.RUN_SPECS_SEARCH }}
       RUN_SPECS_RECOMMEND: ${{ steps.setup.outputs.RUN_SPECS_RECOMMEND }}
@@ -53,6 +56,9 @@ jobs:
       - name: Checking search specs
         run: yarn build:specs search
 
+      - name: Lint search specs
+        run: yarn eslint --ext=yml specs/search
+
   specs_recommend:
     runs-on: ubuntu-20.04
     needs: setup
@@ -66,6 +72,9 @@ jobs:
       - name: Checking recommend specs
         run: yarn build:specs recommend
 
+      - name: Lint recommend specs
+        run: yarn eslint --ext=yml specs/recommend
+
   specs_perso:
     runs-on: ubuntu-20.04
     needs: setup
@@ -79,6 +88,9 @@ jobs:
       - name: Checking personalization specs
         run: yarn build:specs personalization
 
+      - name: Lint personalization specs
+        run: yarn eslint --ext=yml specs/personalization
+
   specs_analytics:
     runs-on: ubuntu-20.04
     needs: setup
@@ -92,6 +104,9 @@ jobs:
       - name: Checking analytics specs
         run: yarn build:specs analytics
 
+      - name: Lint analytics specs
+        run: yarn eslint --ext=yml specs/analytics
+
   client_javascript_search:
     runs-on: ubuntu-20.04
     needs: [specs_search]
@@ -222,13 +237,12 @@ jobs:
   cts:
     runs-on: ubuntu-20.04
     needs:
-      [
-        client_javascript_search,
-        client_javascript_recommend,
-        client_javascript_perso,
-        client_javascript_analytics,
-        client_java_search,
-      ]
+      - client_javascript_search
+      - client_javascript_recommend
+      - client_javascript_perso
+      - client_javascript_analytics
+      - client_java_search
+
     if: ${{ always() && needs.setup.outputs.RUN_CTS == 'true' }}
     steps:
       - uses: actions/checkout@v2