diff --git a/.github/workflows/published-worker-metrics.yml b/.github/workflows/published-worker-metrics.yml
index 95f074b2..26195967 100644
--- a/.github/workflows/published-worker-metrics.yml
+++ b/.github/workflows/published-worker-metrics.yml
@@ -2,10 +2,10 @@ name: Published worker metrics
 
 on:
   pull_request:
-    paths: ['.github/workflows/published-worker-metrics.yml', 'tests/smoke/worker-metrics.php', 'tests/smoke/update-outcome.php', 'tests/smoke/workflow-completion-limits.php', 'tests/smoke/query-results.php', 'tests/ci/test_published_query_tuple.py']
+    paths: ['.github/workflows/published-worker-metrics.yml', 'tests/smoke/worker-metrics.php', 'tests/smoke/update-outcome.php', 'tests/smoke/workflow-completion-limits.php', 'tests/smoke/query-results.php', 'tests/ci/test_published_query_tuple.py', 'tests/ci/check_published_laravel.py', 'tests/ci/test_published_laravel.py']
   push:
     branches: [main]
-    paths: ['.github/workflows/published-worker-metrics.yml', 'tests/smoke/worker-metrics.php', 'tests/smoke/update-outcome.php', 'tests/smoke/workflow-completion-limits.php', 'tests/smoke/query-results.php', 'tests/ci/test_published_query_tuple.py']
+    paths: ['.github/workflows/published-worker-metrics.yml', 'tests/smoke/worker-metrics.php', 'tests/smoke/update-outcome.php', 'tests/smoke/workflow-completion-limits.php', 'tests/smoke/query-results.php', 'tests/ci/test_published_query_tuple.py', 'tests/ci/check_published_laravel.py', 'tests/ci/test_published_laravel.py']
   workflow_dispatch:
     inputs:
       sdk_version:
@@ -20,6 +20,14 @@ on:
         description: Qualify binary and JSON query results with the installed Worker
         type: boolean
         default: false
+      laravel_bridges:
+        description: Qualify registry SDK installation on both patched Laravel floors
+        type: boolean
+        default: false
+      expected_sdk_reference:
+        description: Exact published SDK source reference required by Laravel qualification
+        type: string
+        default: ''
       candidate_source:
         description: Optional exact SDK commit for prepublication dist qualification only
         type: string
@@ -46,7 +54,9 @@ jobs:
         with:
           persist-credentials: false
       - name: Require the exact published query tuple selectors
-        run: python3 -I -S -B tests/ci/test_published_query_tuple.py
+        run: |
+          python3 -I -S -B tests/ci/test_published_query_tuple.py
+          python3 -S -B -m unittest discover -s tests/ci -p test_published_laravel.py
       - name: Create isolated Composer state
         run: |
           state="$(mktemp -d "$RUNNER_TEMP/worker-metrics.XXXXXX")"
@@ -180,3 +190,97 @@ jobs:
       - name: Remove the isolated Server and its volumes
         if: always()
         run: docker rm --force --volumes sdk-php-metrics-runtime
+
+  installed-laravel-bridges:
+    if: github.event_name == 'workflow_dispatch' && inputs.laravel_bridges
+    runs-on: ubuntu-24.04
+    timeout-minutes: 15
+    strategy:
+      fail-fast: false
+      matrix:
+        laravel: ['12.72.0', '13.41.0']
+    defaults:
+      run:
+        shell: bash --noprofile --norc -e -o pipefail {0}
+    env:
+      SDK_VERSION: ${{ inputs.sdk_version }}
+      SDK_REFERENCE: ${{ inputs.expected_sdk_reference }}
+      LARAVEL_VERSION: ${{ matrix.laravel }}
+    steps:
+      - name: Require a registry-only main invocation
+        env:
+          CANDIDATE_SOURCE: ${{ inputs.candidate_source }}
+        run: |
+          [[ "$GITHUB_REF" = refs/heads/main && -z "$CANDIDATE_SOURCE" ]]
+          [[ "$SDK_VERSION" =~ ^[0-9]+\.[0-9]+\.[0-9]+$ ]]
+          [[ "$SDK_REFERENCE" =~ ^[0-9a-f]{40}$ ]]
+      - uses: actions/checkout@d23441a48e516b6c34aea4fa41551a30e30af803 # v6
+        with:
+          persist-credentials: false
+      - name: Select Ubuntu's Python 3.12
+        run: |
+          /usr/bin/python3 -I -S -c 'import sys; assert sys.version_info[:2] == (3, 12)'
+          echo /usr/bin >> "$GITHUB_PATH"
+      - name: Create the clean registry consumer
+        run: |
+          state="$(mktemp -d "$RUNNER_TEMP/published-laravel.XXXXXX")"
+          mkdir -m 700 "$state/home" "$state/cache" "$state/tmp" "$state/consumer"
+          {
+            echo "COMPOSER_HOME=$state/home"
+            echo "COMPOSER_CACHE_DIR=$state/cache"
+            echo "TMPDIR=$state/tmp"
+            echo "LARAVEL_CONSUMER=$state/consumer"
+          } >> "$GITHUB_ENV"
+          python3 -I -S -B - "$state/consumer/composer.json" <<'PY'
+          import json,os,pathlib,sys
+          pathlib.Path(sys.argv[1]).write_text(json.dumps({
+              'name':'durable-workflow/published-laravel',
+              'require':{'durable-workflow/sdk':os.environ['SDK_VERSION'],'laravel/framework':os.environ['LARAVEL_VERSION']},
+              'config':{'allow-plugins':{}}
+          })+'\n')
+          PY
+      - name: Select authenticated dependency trust
+        uses: durable-workflow/.github/.github/actions/bootstrap-patched-pip@242c2a7fb23459db2e1ada5f84dbee6d61d9b1e5 # clean-trust
+        with:
+          clients: python,composer,curl,git
+      - name: Set up the qualified PHP profile
+        uses: durable-workflow/.github/.github/actions/setup-php-linux@411a14ac07d32073eed6ab4977f2825eba4739a7 # bound-linux-php
+        with:
+          php-version: '8.3'
+          ini-file: production
+          tools: composer:2.10.3,phpunit:11.5.57
+          coverage: none
+      - name: Verify Composer trust before registry installation
+        uses: durable-workflow/.github/.github/actions/verify-composer-trust@242c2a7fb23459db2e1ada5f84dbee6d61d9b1e5 # clean-trust
+        with:
+          working-directory: ${{ env.LARAVEL_CONSUMER }}
+      - name: Install the exact registry SDK and Laravel floor
+        run: composer install --working-dir="$LARAVEL_CONSUMER" --no-scripts --no-plugins --no-interaction --prefer-dist --no-progress
+      - name: Verify Composer trust before the locked audit
+        uses: durable-workflow/.github/.github/actions/verify-composer-trust@242c2a7fb23459db2e1ada5f84dbee6d61d9b1e5 # clean-trust
+        with:
+          working-directory: ${{ env.LARAVEL_CONSUMER }}
+      - name: Audit the actual installed graph
+        run: composer audit --working-dir="$LARAVEL_CONSUMER" --locked --format=json > laravel-audit.json
+      - name: Exercise the installed Laravel bridge and cached roles
+        env:
+          DURABLE_WORKFLOW_CLIENT_TOKEN: client-secret
+          DURABLE_WORKFLOW_WORKER_TOKEN: worker-secret
+        run: |
+          php scripts/ci/assert-installed-version.php "$LARAVEL_CONSUMER" durable-workflow/sdk "$SDK_VERSION"
+          php scripts/ci/assert-installed-version.php "$LARAVEL_CONSUMER" laravel/framework "$LARAVEL_VERSION"
+          python3 -I -S -B tests/ci/check_published_laravel.py "$LARAVEL_CONSUMER" "$SDK_VERSION" "$SDK_REFERENCE" "$LARAVEL_VERSION" > laravel-tuple.json
+          php tests/compat/laravel.php "$LARAVEL_CONSUMER/vendor/autoload.php"
+          php tests/compat/laravel-config-cache.php "$LARAVEL_CONSUMER/vendor/autoload.php"
+      - name: Retain the registry tuple and installed graph
+        if: always()
+        uses: actions/upload-artifact@cf430e030ddbb5b0abf93d22962f4752f3646cd9 # v7.0.2
+        with:
+          name: published-laravel-${{ matrix.laravel }}
+          path: |
+            laravel-tuple.json
+            laravel-audit.json
+            ${{ env.LARAVEL_CONSUMER }}/composer.json
+            ${{ env.LARAVEL_CONSUMER }}/composer.lock
+            ${{ env.LARAVEL_CONSUMER }}/vendor/composer/installed.json
+          retention-days: 14
diff --git a/tests/ci/check_published_laravel.py b/tests/ci/check_published_laravel.py
new file mode 100644
index 00000000..59fa9652
--- /dev/null
+++ b/tests/ci/check_published_laravel.py
@@ -0,0 +1,58 @@
+"""Bind Laravel bridge observations to the requested registry distributions."""
+
+import json
+from pathlib import Path
+import re
+import sys
+
+
+FRAMEWORKS = {
+    "12.72.0": "b089d3020e508f49b3625726ab4a2c897f1b78d5",
+    "13.41.0": "95934d2868c90c1aa8e711791ea33d1e990e1719",
+}
+
+
+def package(rows, name):
+    matches = [row for row in rows if row.get("name") == name]
+    if len(matches) != 1:
+        raise ValueError(f"{name} must occur exactly once")
+    return matches[0]
+
+
+def check(root, sdk_version, sdk_reference, laravel_version):
+    if not re.fullmatch(r"[0-9]+\.[0-9]+\.[0-9]+", sdk_version):
+        raise ValueError("An exact stable SDK version is required")
+    if not re.fullmatch(r"[0-9a-f]{40}", sdk_reference):
+        raise ValueError("An exact SDK source reference is required")
+    framework_reference = FRAMEWORKS[laravel_version]
+    manifest = json.loads((root / "composer.json").read_text())
+    if "repositories" in manifest:
+        raise ValueError("Registry qualification cannot override repositories")
+    lock = json.loads((root / "composer.lock").read_text())
+    installed = json.loads((root / "vendor/composer/installed.json").read_text())
+    for name, version, reference in [
+        ("durable-workflow/sdk", sdk_version, sdk_reference),
+        ("laravel/framework", laravel_version, framework_reference),
+    ]:
+        if manifest["require"].get(name) != version:
+            raise ValueError(f"{name} must have an exact root requirement")
+        for rows in [lock["packages"], installed["packages"]]:
+            row = package(rows, name)
+            if row["version"].removeprefix("v") != version:
+                raise ValueError(f"{name} version mismatch")
+            if row["source"]["reference"] != reference:
+                raise ValueError(f"{name} source mismatch")
+            if row["dist"]["reference"] != reference or row["dist"]["type"] != "zip":
+                raise ValueError(f"{name} distribution mismatch")
+        if package(installed["packages"], name).get("installation-source") != "dist":
+            raise ValueError(f"{name} was not installed from its distribution")
+    sdk = json.loads((root / "vendor/durable-workflow/sdk/composer.json").read_text())
+    if sdk["extra"]["durable-workflow"]["product-train"] != sdk_version:
+        raise ValueError("Installed SDK product train mismatch")
+    return {"sdk_version": sdk_version, "sdk_reference": sdk_reference,
+            "laravel_version": laravel_version, "laravel_reference": framework_reference,
+            "source_fallback": False, "repository_override": False}
+
+
+if __name__ == "__main__":
+    print(json.dumps(check(Path(sys.argv[1]), *sys.argv[2:5])))
diff --git a/tests/ci/test_published_laravel.py b/tests/ci/test_published_laravel.py
new file mode 100644
index 00000000..14f50299
--- /dev/null
+++ b/tests/ci/test_published_laravel.py
@@ -0,0 +1,62 @@
+import copy
+import json
+from pathlib import Path
+import tempfile
+import unittest
+
+from check_published_laravel import check, FRAMEWORKS
+
+
+class PublishedLaravelTest(unittest.TestCase):
+    def setUp(self):
+        self.directory = tempfile.TemporaryDirectory()
+        self.addCleanup(self.directory.cleanup)
+        self.root = Path(self.directory.name)
+        self.version = "3.18.3"
+        self.reference = "a" * 40
+        self.manifest = {"require": {"durable-workflow/sdk": self.version, "laravel/framework": "12.72.0"}}
+        self.rows = []
+        for name, version, reference in [("durable-workflow/sdk", self.version, self.reference),
+                                         ("laravel/framework", "v12.72.0", FRAMEWORKS["12.72.0"])]:
+            self.rows.append({"name": name, "version": version, "source": {"reference": reference},
+                              "dist": {"reference": reference, "type": "zip"}, "installation-source": "dist"})
+
+    def write(self, rows=None):
+        documents = {"composer.json": self.manifest, "composer.lock": {"packages": self.rows},
+                     "vendor/composer/installed.json": {"packages": rows if rows is not None else self.rows},
+                     "vendor/durable-workflow/sdk/composer.json": {"extra": {"durable-workflow": {"product-train": self.version}}}}
+        for name, document in documents.items():
+            path = self.root / name
+            path.parent.mkdir(parents=True, exist_ok=True)
+            path.write_text(json.dumps(document))
+
+    def test_matching_registry_install(self):
+        self.write()
+        self.assertFalse(check(self.root, self.version, self.reference, "12.72.0")["source_fallback"])
+
+    def test_installed_metadata_cannot_borrow_the_lock_identity(self):
+        for name in ["durable-workflow/sdk", "laravel/framework"]:
+            for mutation in ["version", "source", "dist", "installation-source"]:
+                with self.subTest(name=name, mutation=mutation):
+                    rows = copy.deepcopy(self.rows)
+                    row = next(row for row in rows if row["name"] == name)
+                    if mutation in ["source", "dist"]:
+                        row[mutation]["reference"] = "b" * 40
+                    else:
+                        row[mutation] = "source" if mutation == "installation-source" else "99.0.0"
+                    self.write(rows)
+                    with self.assertRaises(ValueError):
+                        check(self.root, self.version, self.reference, "12.72.0")
+
+    def test_duplicate_and_repository_override_refuse(self):
+        self.write(self.rows + [self.rows[0]])
+        with self.assertRaises(ValueError):
+            check(self.root, self.version, self.reference, "12.72.0")
+        self.manifest["repositories"] = [{"type": "path", "url": "/synthetic"}]
+        self.write()
+        with self.assertRaises(ValueError):
+            check(self.root, self.version, self.reference, "12.72.0")
+
+
+if __name__ == "__main__":
+    unittest.main()