diff --git a/Cargo.lock b/Cargo.lock
index 5c65ce2aeaa..80cb83026c8 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -3540,6 +3540,7 @@ version = "0.1.0"
 dependencies = [
  "base64 0.22.1",
  "chrono",
+ "daft",
  "gateway-messages",
  "omicron-workspace-hack",
  "progenitor 0.9.1",
diff --git a/clients/gateway-client/Cargo.toml b/clients/gateway-client/Cargo.toml
index 96f6484122c..56ae822a249 100644
--- a/clients/gateway-client/Cargo.toml
+++ b/clients/gateway-client/Cargo.toml
@@ -10,6 +10,7 @@ workspace = true
 [dependencies]
 base64.workspace = true
 chrono.workspace = true
+daft.workspace = true
 gateway-messages.workspace = true
 progenitor.workspace = true
 rand.workspace = true
diff --git a/clients/gateway-client/src/lib.rs b/clients/gateway-client/src/lib.rs
index a78204d731b..2f1d48cf4de 100644
--- a/clients/gateway-client/src/lib.rs
+++ b/clients/gateway-client/src/lib.rs
@@ -69,6 +69,9 @@ progenitor::generate_api!(
         SpIgnition = { derives = [PartialEq, Eq, PartialOrd, Ord] },
         SpIgnitionSystemType = { derives = [Copy, PartialEq, Eq, PartialOrd, Ord] },
         SpState = { derives = [PartialEq, Eq, PartialOrd, Ord] },
+        SpType = { derives = [daft::Diffable] },
+        SpUpdateStatus = { derives = [PartialEq, Hash, Eq] },
+        UpdatePreparationProgress = { derives = [PartialEq, Hash, Eq] },
     },
 );
 
diff --git a/common/src/update.rs b/common/src/update.rs
index deec3016098..8f560d7485d 100644
--- a/common/src/update.rs
+++ b/common/src/update.rs
@@ -4,6 +4,7 @@
 
 use std::fmt;
 
+use daft::Diffable;
 use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 use tufaceous_artifact::{Artifact, ArtifactKind, ArtifactVersion};
@@ -15,6 +16,7 @@ use tufaceous_artifact::{Artifact, ArtifactKind, ArtifactVersion};
 // TODO: move this to tufaceous-artifact in the future
 #[derive(
     Debug,
+    Diffable,
     Clone,
     PartialEq,
     Eq,
diff --git a/nexus/types/src/inventory.rs b/nexus/types/src/inventory.rs
index 95c4f80e05f..7f0bbdf1652 100644
--- a/nexus/types/src/inventory.rs
+++ b/nexus/types/src/inventory.rs
@@ -14,6 +14,7 @@ use crate::external_api::params::UninitializedSledId;
 use chrono::DateTime;
 use chrono::Utc;
 use clickhouse_admin_types::ClickhouseKeeperClusterMembership;
+use daft::Diffable;
 pub use gateway_client::types::PowerState;
 pub use gateway_client::types::RotImageError;
 pub use gateway_client::types::RotSlot;
@@ -34,6 +35,7 @@ use omicron_uuid_kinds::CollectionUuid;
 use omicron_uuid_kinds::DatasetUuid;
 use omicron_uuid_kinds::SledUuid;
 use omicron_uuid_kinds::ZpoolUuid;
+use schemars::JsonSchema;
 use serde::{Deserialize, Serialize};
 use serde_with::serde_as;
 use std::collections::BTreeMap;
@@ -205,7 +207,16 @@ impl Collection {
 /// the same part number and serial number but a new revision number, we'd want
 /// to treat that as the same baseboard as one with a different revision number.
 #[derive(
-    Clone, Debug, Ord, Eq, PartialOrd, PartialEq, Deserialize, Serialize,
+    Clone,
+    Debug,
+    Diffable,
+    Ord,
+    Eq,
+    PartialOrd,
+    PartialEq,
+    Deserialize,
+    Serialize,
+    JsonSchema,
 )]
 pub struct BaseboardId {
     /// Oxide Part Number
@@ -226,6 +237,17 @@ impl From<UninitializedSledId> for BaseboardId {
     }
 }
 
+impl slog::KV for BaseboardId {
+    fn serialize(
+        &self,
+        _record: &slog::Record,
+        serializer: &mut dyn slog::Serializer,
+    ) -> slog::Result {
+        serializer.emit_str("part_number".into(), &self.part_number)?;
+        serializer.emit_str("serial_number".into(), &self.serial_number)
+    }
+}
+
 /// Caboose contents found during a collection
 ///
 /// These are normalized in the database.  Each distinct `Caboose` is assigned a