diff --git a/docs/openapi/convey-clients.json b/docs/openapi/convey-clients.json
index 5be77e7ce..abd92f063 100644
--- a/docs/openapi/convey-clients.json
+++ b/docs/openapi/convey-clients.json
@@ -8302,7 +8302,8 @@
             "application/json": {
               "example": {
                 "device_label": "Jer iPhone",
-                "role": "phone"
+                "role": "phone",
+                "same_machine": false
               },
               "schema": {
                 "additionalProperties": true,
@@ -8312,6 +8313,9 @@
                   },
                   "role": {
                     "type": "string"
+                  },
+                  "same_machine": {
+                    "type": "boolean"
                   }
                 },
                 "type": "object"
@@ -8384,8 +8388,9 @@
                 }
               }
             },
-            "description": "Access gate rejected a revoked paired-link identity.",
+            "description": "Access gate rejected the pair-start request.",
             "x-reason-codes": [
+              "local_request_only",
               "pl_revoked"
             ]
           },
@@ -8573,23 +8578,49 @@
             "content": {
               "application/json": {
                 "example": {
+                  "revoked_observers": [
+                    {
+                      "name": "phone-a",
+                      "prefix": "phone-a-"
+                    }
+                  ],
                   "unpaired": "sha256:abc123"
                 },
                 "schema": {
                   "additionalProperties": true,
                   "properties": {
+                    "revoked_observers": {
+                      "items": {
+                        "additionalProperties": false,
+                        "properties": {
+                          "name": {
+                            "type": "string"
+                          },
+                          "prefix": {
+                            "type": "string"
+                          }
+                        },
+                        "required": [
+                          "name",
+                          "prefix"
+                        ],
+                        "type": "object"
+                      },
+                      "type": "array"
+                    },
                     "unpaired": {
                       "type": "string"
                     }
                   },
                   "required": [
-                    "unpaired"
+                    "unpaired",
+                    "revoked_observers"
                   ],
                   "type": "object"
                 }
               }
             },
-            "description": "The revoked fingerprint."
+            "description": "The revoked fingerprint and any observer records revoked with it."
           },
           "400": {
             "content": {
@@ -8629,6 +8660,19 @@
             "x-reason-codes": [
               "paired_device_not_found"
             ]
+          },
+          "500": {
+            "content": {
+              "application/json": {
+                "schema": {
+                  "$ref": "#/components/schemas/Error"
+                }
+              }
+            },
+            "description": "Observer revoke cascade failed after the device was unpaired.",
+            "x-reason-codes": [
+              "internal_error"
+            ]
           }
         },
         "summary": "Unpair a device",
diff --git a/docs/openapi/observer-client-contract/manifest.json b/docs/openapi/observer-client-contract/manifest.json
index 7a851435b..7d7190805 100644
--- a/docs/openapi/observer-client-contract/manifest.json
+++ b/docs/openapi/observer-client-contract/manifest.json
@@ -14,7 +14,7 @@
     }
   ],
   "bundle_schema_identity": "solstone.observer-client-contract-bundle.schema.v1",
-  "bundle_semver": "5.0.5",
+  "bundle_semver": "5.0.6",
   "component_closure": [
     "CallosumEvent",
     "Error",
@@ -55,7 +55,7 @@
       "id": "bundle.projection_builder",
       "path": "solstone/convey/contract/observer_bundle.py",
       "role": "projection_builder",
-      "sha256": "0396a1e5a87b34ea67ec6e4bb2e5272821ecd85bd3367d078e81a24b05db6f21"
+      "sha256": "6ef92c49cbc70afa532497151c2b1e0f95d59cd364cdc95df8a66c9e36eabbb2"
     },
     {
       "id": "bundle.recording",
@@ -85,7 +85,7 @@
       "id": "fragment.link",
       "path": "solstone/apps/network/contract.py",
       "role": "code_adjacent_fragment",
-      "sha256": "d5c11897d4690cbf591b71a99ddaa4bbfd6631f154974d3f71090cb695626b80"
+      "sha256": "937e8bd824ba40117e6d64656b3fdb54b9e768659346865146791a97a6d5a688"
     },
     {
       "id": "fragment.observer",
@@ -133,13 +133,13 @@
       "id": "producer.observer_routes",
       "path": "solstone/apps/observer/routes.py",
       "role": "producer",
-      "sha256": "129ffa85173470af419c27553f974bdf52ce26b32f57876f5cc90bc866889539"
+      "sha256": "b741543fe2c776a3b074c489af6f1e1490b27e937badeb60c7c125503f2e50b7"
     },
     {
       "id": "producer.observer_utils",
       "path": "solstone/apps/observer/utils.py",
       "role": "producer",
-      "sha256": "9dff210886069f02c5ddf5e4a33832e58af108e90272af353f98d8fcdd7a58bc"
+      "sha256": "06f908e181709542dfd461cd89f66f0aad222c98e1164bef0dbcfa64a4e0776b"
     },
     {
       "id": "producer.protocol",
diff --git a/solstone/apps/network/contract.py b/solstone/apps/network/contract.py
index 1f04f437b..f069a39a8 100644
--- a/solstone/apps/network/contract.py
+++ b/solstone/apps/network/contract.py
@@ -40,6 +40,19 @@ _LOCAL_ENDPOINT_SCHEMA = {
     },
 }
 
+_REVOKED_OBSERVER_SCHEMA = {
+    "type": "array",
+    "items": {
+        "type": "object",
+        "additionalProperties": False,
+        "properties": {
+            "name": {"type": "string"},
+            "prefix": {"type": "string"},
+        },
+        "required": ["name", "prefix"],
+    },
+}
+
 OPERATIONS: list[OperationSpec] = [
     OperationSpec(
         operation_id="link.pairStart",
@@ -54,8 +67,13 @@ OPERATIONS: list[OperationSpec] = [
             fields=(
                 FieldSpec("device_label", "string"),
                 FieldSpec("role", "string"),
+                FieldSpec("same_machine", "boolean"),
             ),
-            example={"device_label": "Jer iPhone", "role": "phone"},
+            example={
+                "device_label": "Jer iPhone",
+                "role": "phone",
+                "same_machine": False,
+            },
         ),
         responses=(
             ResponseSpec(
@@ -83,8 +101,8 @@ OPERATIONS: list[OperationSpec] = [
             ),
             _json_error(
                 403,
-                ("pl_revoked",),
-                "Access gate rejected a revoked paired-link identity.",
+                ("local_request_only", "pl_revoked"),
+                "Access gate rejected the pair-start request.",
             ),
             _json_error(
                 503,
@@ -307,9 +325,22 @@ OPERATIONS: list[OperationSpec] = [
         responses=(
             ResponseSpec(
                 status=200,
-                description="The revoked fingerprint.",
-                named_fields=(FieldSpec("unpaired", "string", required=True),),
-                example={"unpaired": "sha256:abc123"},
+                description="The revoked fingerprint and any observer records revoked with it.",
+                named_fields=(
+                    FieldSpec("unpaired", "string", required=True),
+                    FieldSpec(
+                        "revoked_observers",
+                        "array",
+                        required=True,
+                        raw_schema=_REVOKED_OBSERVER_SCHEMA,
+                    ),
+                ),
+                example={
+                    "unpaired": "sha256:abc123",
+                    "revoked_observers": [
+                        {"name": "phone-a", "prefix": "phone-a-"},
+                    ],
+                },
             ),
             _json_error(
                 400,
@@ -326,6 +357,11 @@ OPERATIONS: list[OperationSpec] = [
                 ("paired_device_not_found",),
                 "No paired device matched the request.",
             ),
+            _json_error(
+                500,
+                ("internal_error",),
+                "Observer revoke cascade failed after the device was unpaired.",
+            ),
         ),
     ),
     OperationSpec(
diff --git a/solstone/convey/contract/observer_bundle.py b/solstone/convey/contract/observer_bundle.py
index 9345b4256..f1114c452 100644
--- a/solstone/convey/contract/observer_bundle.py
+++ b/solstone/convey/contract/observer_bundle.py
@@ -20,7 +20,7 @@ from solstone.convey.contract.assemble import CALLOSUM_REGISTRY, build_document
 from solstone.observe import protocol
 
 INITIAL_BUNDLE_SEMVER = "1.0.0"
-BUNDLE_SEMVER = "5.0.5"
+BUNDLE_SEMVER = "5.0.6"
 GENERATOR_IDENTITY = "solstone.convey.contract.observer_bundle.v1"
 BUNDLE_SCHEMA_IDENTITY = "solstone.observer-client-contract-bundle.schema.v1"
 SCHEMA_DIALECT_URI = "https://json-schema.org/draft/2020-12/schema"