diff --git a/tests/runtime_provider.py b/tests/runtime_provider.py
new file mode 100644
index 00000000..7a736699
--- /dev/null
+++ b/tests/runtime_provider.py
@@ -0,0 +1,39 @@
+"""Explicit consent fixture for firmware with RAM-only provider identities."""
+from google.protobuf import descriptor_pb2, descriptor_pool, message_factory
+from keepkeylib import mapping, messages_pb2 as proto
+
+LOAD_CLEARSIGN_SIGNER_WIRE_ID = 117
+FIELD = descriptor_pb2.FieldDescriptorProto
+
+# The audited host pin predates this message. Keep the fixture wire contract
+# narrow rather than importing unrelated generated protocol changes.
+spec = descriptor_pb2.FileDescriptorProto(name="runtime_provider_fixture.proto", syntax="proto2")
+message = spec.message_type.add(name="FixtureLoadClearsignSigner")
+for number, name, kind in [(1, "key_id", FIELD.TYPE_UINT32),
+                           (2, "pubkey", FIELD.TYPE_BYTES),
+                           (3, "alias", FIELD.TYPE_STRING),
+                           (7, "persist", FIELD.TYPE_BOOL)]:
+    message.field.add(name=name, number=number, type=kind, label=FIELD.LABEL_OPTIONAL)
+pool = descriptor_pool.DescriptorPool()
+pool.Add(spec)
+LoadSigner = message_factory.MessageFactory(pool).GetPrototype(
+    pool.FindMessageTypeByName("FixtureLoadClearsignSigner"))
+if (LOAD_CLEARSIGN_SIGNER_WIRE_ID in mapping.map_type_to_class or
+        LOAD_CLEARSIGN_SIGNER_WIRE_ID in mapping.map_class_to_type.values()):
+    raise RuntimeError("Runtime provider fixture wire ID is already registered")
+mapping.map_class_to_type[LoadSigner] = LOAD_CLEARSIGN_SIGNER_WIRE_ID
+mapping.map_type_to_class[LOAD_CLEARSIGN_SIGNER_WIRE_ID] = LoadSigner
+
+
+def load_test_provider(client):
+    from ecdsa import SigningKey, SECP256k1
+    from keepkeylib.signed_metadata import TEST_PRIVATE_KEY
+    key = SigningKey.from_string(TEST_PRIVATE_KEY, curve=SECP256k1)
+    public_key = key.get_verifying_key().to_string()
+    compressed_key = bytes([2 | (public_key[-1] & 1)]) + public_key[:32]
+    request = LoadSigner(
+        key_id=3, alias="Integration provider", persist=False,
+        pubkey=compressed_key)
+    with client:
+        client.set_expected_responses([proto.ButtonRequest(), proto.Success()])
+        client.call(request)
diff --git a/tests/test_msg_ethereum_clear_signing.py b/tests/test_msg_ethereum_clear_signing.py
index 5d9e661a..e55d01ca 100644
--- a/tests/test_msg_ethereum_clear_signing.py
+++ b/tests/test_msg_ethereum_clear_signing.py
@@ -15,13 +15,14 @@
 """
 
 import unittest
+import os
 import hashlib
 import struct
 
 try:
     import common
 except ImportError:
-    import sys, os
+    import sys
     sys.path.insert(0, os.path.dirname(__file__))
     import common
 
@@ -414,6 +415,13 @@ def setUp(self):
         self.requires_firmware("7.14.0")
         self.requires_message("EthereumTxMetadata")
         self.setup_mnemonic_nopin_nopassphrase()
+        if os.environ.get("KEEPKEY_RUNTIME_PROVIDER") == "1":
+            # Explicit CI mode requires the fixture and its dependencies.
+            # Missing ecdsa must fail rather than skip signature validation.
+            self.client.apply_policy("AdvancedMode", True)
+            from runtime_provider import load_test_provider
+            load_test_provider(self.client)
+            common.reset_screenshot_capture(self.client)
 
     def test_valid_metadata_returns_verified(self):
         """Send valid signed metadata → device returns VERIFIED."""