diff --git a/Cargo.lock b/Cargo.lock
index 302b562..685b066 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1156,7 +1156,7 @@ dependencies = [
 [[package]]
 name = "model-connector"
 version = "0.1.0"
-source = "git+https://eureka.gamecult.org/forge/GameCult/ModelConnector.git?rev=9db62027eb1e6a2f7a47fdfb3cb5f118c5b96da7#9db62027eb1e6a2f7a47fdfb3cb5f118c5b96da7"
+source = "git+https://eureka.gamecult.org/forge/GameCult/ModelConnector.git?rev=c1802d85bee3ae04b0c5737563c8343c1fef515d#c1802d85bee3ae04b0c5737563c8343c1fef515d"
 dependencies = [
  "aes-gcm",
  "base64",
diff --git a/crates/mind-body/Cargo.toml b/crates/mind-body/Cargo.toml
index 31b4d90..4f37524 100644
--- a/crates/mind-body/Cargo.toml
+++ b/crates/mind-body/Cargo.toml
@@ -33,7 +33,7 @@ cultnet-rs.workspace = true
 eureka-pipeline = { path = "../eureka-pipeline" }
 eureka-state = { path = "../eureka-state", default-features = false }
 huginn-mind = { path = "../huginn-mind" }
-model-connector = { git = "https://eureka.gamecult.org/forge/GameCult/ModelConnector.git", rev = "9db62027eb1e6a2f7a47fdfb3cb5f118c5b96da7", package = "model-connector" }
+model-connector = { git = "https://eureka.gamecult.org/forge/GameCult/ModelConnector.git", rev = "c1802d85bee3ae04b0c5737563c8343c1fef515d", package = "model-connector" }
 rmp-serde = "1"
 serde = { version = "1", features = ["derive"] }
 serde_json = "1"
@@ -53,7 +53,7 @@ rustix = { version = "1", default-features = false, features = ["std", "net"] }
 [dev-dependencies]
 # The kit's serve loop and service, for the test that runs the connector client
 # against the real server with a fake provider behind it.
-model-connector = { git = "https://eureka.gamecult.org/forge/GameCult/ModelConnector.git", rev = "9db62027eb1e6a2f7a47fdfb3cb5f118c5b96da7", package = "model-connector", features = ["daemon"] }
+model-connector = { git = "https://eureka.gamecult.org/forge/GameCult/ModelConnector.git", rev = "c1802d85bee3ae04b0c5737563c8343c1fef515d", package = "model-connector", features = ["daemon"] }
 proc-macro2 = "1"
 quote = "1"
 syn = { version = "2", features = ["full"] }
diff --git a/crates/mind-body/src/lease_client/lease_v2/README.md b/crates/mind-body/src/lease_client/lease_v2/README.md
new file mode 100644
index 0000000..e62045e
--- /dev/null
+++ b/crates/mind-body/src/lease_client/lease_v2/README.md
@@ -0,0 +1,16 @@
+# lease_v2 fixtures
+
+The exact bytes of the claude lease protocol v2: each file is one whole frame (a u32
+big-endian length, then the named-MessagePack map `{kind, value}`).
+
+- `request.bin`: `claude_lease_request`.
+- `refusal_unknown_caller.bin`, `refusal_expired.bin`, `refusal_busy.bin`,
+  `refusal_provider_rejected.bin`: `claude_lease_refusal`; `kind` is the variant name as a
+  PascalCase string.
+- `grant.bin`: `claude_lease_grant` with `lease_id` and `plan_quota` carrying `five_hour` and
+  `seven_day` windows (utilization_permille, resets_at_unix_ms, status, observed_at_unix_ms).
+  On the wire the grant travels with one SCM_RIGHTS fd; the file holds the frame only.
+
+Huginn's lease client vendors these files from this repository and tests against the same
+bytes. Generator: `tests/lease_wire_golden.rs`; run it with `LEASE_V2_REGENERATE=1`, then
+review the diff: a changed byte is a wire change.
diff --git a/crates/mind-body/src/lease_client/lease_v2/grant.bin b/crates/mind-body/src/lease_client/lease_v2/grant.bin
new file mode 100644
index 0000000..bc0a78d
Binary files /dev/null and b/crates/mind-body/src/lease_client/lease_v2/grant.bin differ
diff --git a/crates/mind-body/src/lease_client/lease_v2/refusal_busy.bin b/crates/mind-body/src/lease_client/lease_v2/refusal_busy.bin
new file mode 100644
index 0000000..f6a0887
Binary files /dev/null and b/crates/mind-body/src/lease_client/lease_v2/refusal_busy.bin differ
diff --git a/crates/mind-body/src/lease_client/lease_v2/refusal_expired.bin b/crates/mind-body/src/lease_client/lease_v2/refusal_expired.bin
new file mode 100644
index 0000000..b058450
Binary files /dev/null and b/crates/mind-body/src/lease_client/lease_v2/refusal_expired.bin differ
diff --git a/crates/mind-body/src/lease_client/lease_v2/refusal_provider_rejected.bin b/crates/mind-body/src/lease_client/lease_v2/refusal_provider_rejected.bin
new file mode 100644
index 0000000..54bfcad
Binary files /dev/null and b/crates/mind-body/src/lease_client/lease_v2/refusal_provider_rejected.bin differ
diff --git a/crates/mind-body/src/lease_client/lease_v2/refusal_unknown_caller.bin b/crates/mind-body/src/lease_client/lease_v2/refusal_unknown_caller.bin
new file mode 100644
index 0000000..1172467
Binary files /dev/null and b/crates/mind-body/src/lease_client/lease_v2/refusal_unknown_caller.bin differ
diff --git a/crates/mind-body/src/lease_client/lease_v2/request.bin b/crates/mind-body/src/lease_client/lease_v2/request.bin
new file mode 100644
index 0000000..fddaa37
Binary files /dev/null and b/crates/mind-body/src/lease_client/lease_v2/request.bin differ
diff --git a/crates/mind-body/src/lease_client/tests.rs b/crates/mind-body/src/lease_client/tests.rs
index aac8063..dc865b9 100644
--- a/crates/mind-body/src/lease_client/tests.rs
+++ b/crates/mind-body/src/lease_client/tests.rs
@@ -259,3 +259,46 @@ mod socket_wire {
         served.join().unwrap();
     }
 }
+
+/// The connector published bytes of lease v2, vendored under `lease_v2/` from
+/// ModelConnector `c1802d8` (`crates/claude-connector/tests/fixtures/lease_v2`).
+/// The client decodes every one of them and encodes each back to the same bytes.
+mod connector_goldens {
+    use super::*;
+
+    const REQUEST: &[u8] = include_bytes!("lease_v2/request.bin");
+    const GRANT: &[u8] = include_bytes!("lease_v2/grant.bin");
+    const REFUSALS: [(&[u8], LeaseRefusalKind); 4] = [
+        (include_bytes!("lease_v2/refusal_unknown_caller.bin"), LeaseRefusalKind::UnknownCaller),
+        (include_bytes!("lease_v2/refusal_expired.bin"), LeaseRefusalKind::Expired),
+        (include_bytes!("lease_v2/refusal_busy.bin"), LeaseRefusalKind::Busy),
+        (include_bytes!("lease_v2/refusal_provider_rejected.bin"), LeaseRefusalKind::ProviderRejected),
+    ];
+
+    #[test]
+    fn the_request_encodes_to_exactly_the_published_bytes() {
+        let Some(LeaseMessage::Request(request)) = decode_frame(REQUEST) else { panic!("request.bin is a request") };
+        assert_eq!(request.expires_at_unix_ms, 0x0000_01a1_896d_3cc0);
+        assert_eq!(encode_frame(&LeaseMessage::Request(LeaseRequest { expires_at_unix_ms: 0x0000_01a1_896d_3cc0 })).unwrap(), REQUEST);
+    }
+
+    #[test]
+    fn every_published_refusal_decodes_to_its_kind_and_encodes_back_to_its_bytes() {
+        for (bytes, kind) in REFUSALS {
+            let message = decode_frame(bytes).unwrap_or_else(|| panic!("{kind:?} decodes"));
+            let LeaseMessage::Refusal(refused) = &message else { panic!("{kind:?}: a refusal") };
+            assert_eq!(refused.kind, kind);
+            assert_eq!(encode_frame(&message).unwrap(), bytes, "{kind:?} re-encodes to the connector bytes");
+        }
+    }
+
+    #[test]
+    fn the_published_grant_decodes_with_both_plan_windows_and_encodes_back_to_its_bytes() {
+        let message = decode_frame(GRANT).expect("grant.bin decodes");
+        let LeaseMessage::Grant(grant) = &message else { panic!("a grant") };
+        assert!(!grant.lease_id.is_empty());
+        let windows: Vec<&str> = grant.plan_quota.iter().map(|plan| plan.window.as_str()).collect();
+        assert_eq!(windows, ["five_hour", "seven_day"]);
+        assert_eq!(encode_frame(&message).unwrap(), GRANT);
+    }
+}