diff --git a/.github/workflows/flex-endpoint.yml b/.github/workflows/flex-endpoint.yml
new file mode 100644
index 00000000..33c16c4a
--- /dev/null
+++ b/.github/workflows/flex-endpoint.yml
@@ -0,0 +1,64 @@
+name: Flex
+
+on:
+    push:
+        branches:
+            - master
+
+defaults:
+    run:
+        shell: bash
+
+jobs:
+
+    update:
+        name: Update endpoint
+        runs-on: Ubuntu-20.04
+
+        steps:
+            -
+                name: Checkout
+                uses: actions/checkout@v2
+                id: checkout
+                with:
+                    fetch-depth: 0
+
+            -
+                name: Install tools
+                run: |
+                    git config --global user.email ""
+                    git config --global user.name "github-action bot"
+                    cd .github
+                    wget -q -O - https://github.com/splitsh/lite/releases/download/v1.0.1/lite_linux_amd64.tar.gz | tar -zxp
+                    wget -q -O recipes-checker.zip https://codeload.github.com/symfony-tools/recipes-checker/zip/refs/heads/main
+                    unzip recipes-checker.zip
+                    cd recipes-checker-main
+                    composer install --ansi --no-dev
+
+            -
+                name: Cache Splitsh-lite
+                uses: actions/cache@v2
+                with:
+                    path: .git/splitsh.db
+                    key: ${{ runner.os }}-main-${{ github.sha }}
+                    restore-keys: ${{ runner.os }}-main-
+
+            -
+                name: Update Flex endpoint
+                run: |
+                    set -x
+                    find -mindepth 2 -maxdepth 2 -not -wholename './.*' | cut -c 3- | xargs -r -n1 -I{} .github/splitsh-lite --prefix={} --target=refs/heads/flex-main/{} || rm .git/splitsh.db
+                    [ -e .git/splitsh.db ] || find -mindepth 2 -maxdepth 2 -not -wholename './.*' | cut -c 3- | xargs -r -n1 -I{} .github/splitsh-lite --prefix={} --target=refs/heads/flex-main/{}
+
+                    git ls-tree HEAD */*/* | php .github/recipes-checker-main/run generate:flex-index --contrib ${{ github.repository }} flex-main > flex-index.json
+                    git switch 'flex/main'
+                    mv flex-index.json index.json
+                    git add index.json
+                    git commit -m 'Update Flex index' || true
+                    git switch -
+
+                    git branch --list 'flex-main/*' | xargs -r git push origin -f flex/main
+                    git branch -r --list 'origin/flex-main/*' \
+                        | sed 's/[^/]*\//:/' \
+                        | grep -Fxv "$(find -mindepth 2 -maxdepth 2 -not -wholename './.*' | sed 's/../:flex-main\//')" \
+                        | xargs -r git push origin || true
diff --git a/.github/workflows/pr-cleanup.yml b/.github/workflows/pr-cleanup.yml
new file mode 100644
index 00000000..4f278d75
--- /dev/null
+++ b/.github/workflows/pr-cleanup.yml
@@ -0,0 +1,30 @@
+name: Closing PR
+
+on:
+    pull_request_target:
+        types: [ closed ]
+
+defaults:
+    run:
+        shell: bash
+
+jobs:
+
+    cleanup:
+        name: Cleanup
+        runs-on: Ubuntu-20.04
+
+        steps:
+            -
+                name: Checkout
+                uses: actions/checkout@v2
+                id: checkout
+                with:
+                    fetch-depth: 0
+
+            -
+                name: Cleanup Flex testing endpoint
+                run: |
+                    git branch -r --list 'origin/flex-pull-${{ github.event.number }}/*' \
+                        | sed 's/[^/]*\//:/' \
+                        | xargs -r git push origin :flex/pull-${{ github.event.number }} || true
diff --git a/.github/workflows/qa.yml b/.github/workflows/qa.yml
index f4dd58a3..acd44489 100644
--- a/.github/workflows/qa.yml
+++ b/.github/workflows/qa.yml
@@ -19,12 +19,16 @@ jobs:
                 uses: actions/checkout@v2
                 id: checkout
                 with:
+                    fetch-depth: 0
                     ref: 'refs/pull/${{ github.event.number }}/merge'
 
             -
                 name: Install tools
                 run: |
+                    git config --global user.email ""
+                    git config --global user.name "github-action bot"
                     cd .github
+                    wget -q -O - https://github.com/splitsh/lite/releases/download/v1.0.1/lite_linux_amd64.tar.gz | tar -zxp
                     wget -q -O recipes-checker.zip https://codeload.github.com/symfony-tools/recipes-checker/zip/refs/heads/main
                     unzip recipes-checker.zip
                     cd recipes-checker-main
@@ -40,14 +44,38 @@ jobs:
                 name: Remove non-patched packages
                 if: "always() && steps.checkout.outcome == 'success'"
                 run: |
-                    .github/recipes-checker-main/run list-unpatched-packages $GITHUB_EVENT_PATH ${{ secrets.GITHUB_TOKEN }} | xargs -n10 rm -rf
+                    .github/recipes-checker-main/run list-unpatched-packages $GITHUB_EVENT_PATH ${{ secrets.GITHUB_TOKEN }} | xargs -r -n10 rm -rf
+
+
+            -
+                name: Generate Flex testing endpoint
+                if: "always() && steps.checkout.outcome == 'success' && github.base_ref == 'master'"
+                run: |
+                    set -x
+                    find -mindepth 2 -maxdepth 2 -not -wholename './.*' | cut -c 3- | xargs -r -n1 -I{} .github/splitsh-lite --prefix={} --target=refs/heads/flex-pull-${{ github.event.number }}/{}
+
+                    git ls-tree HEAD */*/* | php .github/recipes-checker-main/run generate:flex-index --contrib ${{ github.repository }} flex-pull-${{ github.event.number }} > index.json
+                    git stash
+                    git switch -c pr
+                    git switch --orphan 'flex/pull-${{ github.event.number }}'
+                    git reset --hard -q
+                    git add index.json
+                    git commit -m 'Create Flex index' || true
+                    git switch pr
+                    git stash pop -q
+
+                    git branch --list 'flex-pull-${{ github.event.number }}/*' | xargs -r git push origin -f flex/pull-${{ github.event.number }}
+                    git branch -r --list 'origin/flex-pull-${{ github.event.number }}/*' \
+                        | sed 's/[^/]*\//:/' \
+                        | grep -Fxv "$(find -mindepth 2 -maxdepth 2 -not -wholename './.*' | sed 's/../:flex-pull-${{ github.event.number }}\//')" \
+                        | xargs -r git push origin || true
 
             -
                 name: Compute diff between recipe versions
                 if: "always() && steps.checkout.outcome == 'success'"
                 run: |
                     find * -mindepth 1 -maxdepth 1 -type d | sort \
-                        | .github/recipes-checker-main/run diff-recipe-versions \
+                        | .github/recipes-checker-main/run diff-recipe-versions https://github.com/${{ github.repository }}/raw/flex/pull-${{ github.event.number }}/index.json \
                         > .github/diff-recipe-versions.md
 
             -