diff --git a/.github/workflows/node-ci.yml b/.github/workflows/node-ci.yml
index c438f63..40646c4 100644
--- a/.github/workflows/node-ci.yml
+++ b/.github/workflows/node-ci.yml
@@ -15,6 +15,12 @@ on:
       cache_dependency_path:
         type: string
         default: "pnpm-lock.yaml"
+      env:
+        description: >
+          Multiline env vars, one per line: KEY=VALUE
+        required: false
+        type: string
+        default: ""
       format_command:
         type: string
         default: "pnpm format:check"
@@ -42,6 +48,19 @@ jobs:
       - name: Checkout source
         uses: actions/checkout@v4
 
+      - name: Load env vars
+        if: ${{ inputs.env != '' }}
+        run: |
+          while IFS= read -r line; do
+            [ -z "$line" ] && continue
+            case "$line" in \#*) continue;; esac
+            if [[ "$line" != *=* ]]; then
+              echo "Invalid env line: $line" >&2
+              exit 1
+            fi
+            echo "$line" >> "$GITHUB_ENV"
+          done <<< "${{ inputs.env }}"
+
       - name: Start ssh-agent
         if: ${{ secrets.ssh_private_key != '' }}
         uses: webfactory/ssh-agent@v0.9.0
diff --git a/.github/workflows/python-uv-ci.yml b/.github/workflows/python-uv-ci.yml
index e8c1c39..030911e 100644
--- a/.github/workflows/python-uv-ci.yml
+++ b/.github/workflows/python-uv-ci.yml
@@ -15,6 +15,12 @@ on:
       cache_dependency_path:
         type: string
         default: "uv.lock"
+      env:
+        description: >
+          Multiline env vars, one per line: KEY=VALUE
+        required: false
+        type: string
+        default: ""
       uv_sync_args:
         type: string
         default: "--frozen --dev"
@@ -48,6 +54,19 @@ jobs:
       - name: Checkout
         uses: actions/checkout@v4
 
+      - name: Load env vars
+        if: ${{ inputs.env != '' }}
+        run: |
+          while IFS= read -r line; do
+            [ -z "$line" ] && continue
+            case "$line" in \#*) continue;; esac
+            if [[ "$line" != *=* ]]; then
+              echo "Invalid env line: $line" >&2
+              exit 1
+            fi
+            echo "$line" >> "$GITHUB_ENV"
+          done <<< "${{ inputs.env }}"
+
       - name: Start ssh-agent
         if: ${{ secrets.ssh_private_key != '' }}
         uses: webfactory/ssh-agent@v0.9.0