diff --git a/.github/workflows/_get_app_metadata.yml b/.github/workflows/_get_app_metadata.yml
new file mode 100644
index 000000000..c37a42ae9
--- /dev/null
+++ b/.github/workflows/_get_app_metadata.yml
@@ -0,0 +1,125 @@
+name: Output metadata on the application, inferred from the local 'ledger_app.toml' manifest or not
+
+on:
+  workflow_call:
+    inputs:
+      app_repository:
+        description: 'The GIT repository to build (defaults to `github.repository`)'
+        required: false
+        default: ${{ github.repository }}
+        type: string
+      app_branch_name:
+        description: 'The GIT branch to build (defaults to `github.ref`)'
+        required: false
+        default: ${{ github.ref }}
+        type: string
+      compatible_devices:
+        description: |
+          The list of device(s) the CI will run on.
+
+          Defaults to the full list of device(s) supported by the application as configured in the
+          'ledger_app.toml' manifest.
+          If the manifest is missing, defaults to ALL (["nanos", "nanox", "nanosp", "stax", "flex"]).
+        required: false
+        default: 'None'
+        type: string
+      pytest_directory:
+        description: |
+          The directory where the Python tests are stored (a `conftest.py` file is expected there).
+
+          If the application is configured with a 'ledger_app.toml' manifest at its root with a
+          'tests.pytest_directory' field, this parameter is ignored.
+        required: false
+        default: 'None'
+        type: string
+    outputs:
+      is_rust:
+        description: Returns "true" if the app is using Rust SDK, else returns "false"
+        value: ${{ jobs.fetch_metadata.outputs.is_rust }}
+      build_directory:
+        description: |
+          Returns the relative 'build_directory' path, i.e the repository directory where can be
+          found either the root 'Makefile' of a C app, or the Cargo.toml of a Rust app.
+        value: ${{ jobs.fetch_metadata.outputs.build_directory }}
+      compatible_devices:
+        description:
+          The list of device(s) supported by the application.
+        value: ${{ jobs.fetch_metadata.outputs.compatible_devices }}
+      pytest_directory:
+        description: |
+          The directory where the Python tests are stored (a `conftest.py` file is expected there).
+        value: ${{ jobs.fetch_metadata.outputs.pytest_directory }}
+
+env:
+  APP_MANIFEST: "ledger_app.toml"
+
+jobs:
+  fetch_metadata:
+    name: Retrieve application metadata
+    runs-on: ubuntu-22.04
+
+    steps:
+      - name: Clone app repository
+        uses: actions/checkout@v4
+        with:
+          repository: ${{ inputs.app_repository }}
+          ref: ${{ inputs.app_branch_name }}
+          submodules: recursive
+
+      - name: Install dependencies
+        run: pip install ledgered
+
+      - name: Gather application metadata, from inputs or 'ledger_app.toml'
+        id: fetch_metadata
+        run: |
+          pytest_directory='${{ inputs.pytest_directory }}'
+          if [[ ! -f "$APP_MANIFEST" ]];
+          then
+              >&2 echo "/!\ No $APP_MANIFEST manifest detected!"
+              >&2 echo "This file is mandatory, please add it on your repository"
+              >&2 echo "Documentation here: /~https://github.com/LedgerHQ/ledgered/blob/master/doc/utils/manifest.md"
+              exit 1
+          fi
+
+          # 'ledger_app.toml' exists
+          echo "Manifest detected."
+          # checking the manifest with the repo
+          ledger-manifest --check . "$APP_MANIFEST"
+
+          # build directory
+          echo "build_directory=$(ledger-manifest --output-build-directory "$APP_MANIFEST")" >> "$GITHUB_OUTPUT"
+
+          # get device list as a single line json formatted value
+          compatible_devices="$(ledger-manifest --output-devices "$APP_MANIFEST" -j | jq -rc '.devices')"
+          if [[ '${{ inputs.compatible_devices }}' != 'None' ]];
+          then
+              # in case classic manifest with devices, the input takes precedence on it
+              compatible_devices='${{ inputs.compatible_devices }}'
+          fi
+          echo "compatible_devices=${compatible_devices}" | sed 's/+/p/' >> "$GITHUB_OUTPUT"
+
+          # pytest_directory (if any)
+          set +e  # when [tests.pytest_directory] is not set, ledger-manifest fails. We don't want that
+          if temp="$(ledger-manifest --output-tests-pytest-directory "$APP_MANIFEST")";
+          then
+              pytest_directory="${temp}"
+          fi
+          set -e
+          echo "pytest_directory=${pytest_directory}" >> "$GITHUB_OUTPUT"
+
+          # SDK language
+          if [[ "$(ledger-manifest --output-sdk "$APP_MANIFEST")" == "rust" ]];
+          then
+              echo "is_rust=true" >> "$GITHUB_OUTPUT"
+          else
+              echo "is_rust=false" >> "$GITHUB_OUTPUT"
+          fi
+
+          echo "Inferred metadata:"
+          cat "$GITHUB_OUTPUT"
+
+    outputs:
+      is_rust: ${{ steps.fetch_metadata.outputs.is_rust }}
+      compatible_devices: ${{ steps.fetch_metadata.outputs.compatible_devices }}
+      build_directory: ${{ steps.fetch_metadata.outputs.build_directory }}
+      pytest_directory: ${{ steps.fetch_metadata.outputs.pytest_directory }}