diff --git a/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/request/LookupKeyById.avsc b/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/request/LookupKeyById.avsc
new file mode 100644
index 000000000..4d03eeeb1
--- /dev/null
+++ b/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/request/LookupKeyById.avsc
@@ -0,0 +1,20 @@
+{
+  "type": "record",
+  "name": "LookUpKeyById",
+  "namespace": "net.corda.data.crypto.wire.ops.sync.request",
+  "doc": "Request to lookup for keys by their key ids. The maximum number of items is 20",
+  "fields": [
+    {
+      "name": "keyIds",
+      "type": [
+        "net.corda.data.crypto.ShortHashes",
+        "net.corda.data.crypto.SecureHashes"
+      ],
+      "doc": "List of key ids"
+    },
+    {
+       "name": "tenantId",
+       "type": "string"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/response/LookupKeyByIdError.avsc b/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/response/LookupKeyByIdError.avsc
new file mode 100644
index 000000000..d80fce93a
--- /dev/null
+++ b/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/response/LookupKeyByIdError.avsc
@@ -0,0 +1,12 @@
+{
+  "type": "record",
+  "name": "LookupKeyByIdError",
+  "namespace": "net.corda.data.crypto.wire.ops.sync.response",
+  "doc": "Error result when looking up a key by Id.",
+  "fields": [
+    {
+      "name": "errorMessage",
+      "type": "net.corda.data.ExceptionEnvelope"
+    }
+  ]
+}
\ No newline at end of file
diff --git a/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/response/LookupKeyByIdResponse.avsc b/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/response/LookupKeyByIdResponse.avsc
new file mode 100644
index 000000000..2bef961e5
--- /dev/null
+++ b/data/avro-schema/src/main/resources/avro/net/corda/data/crypto/wire/ops/sync/response/LookupKeyByIdResponse.avsc
@@ -0,0 +1,16 @@
+{
+  "type": "record",
+  "name": "LookupKeyByIdResponse",
+  "namespace": "net.corda.data.crypto.wire.ops.sync.response",
+  "doc": "Result of the Lookup key by ID operation",
+  "fields": [
+    {
+      "name": "response",
+      "type": [
+        "net.corda.data.crypto.wire.CryptoSigningKeys",
+        "net.corda.data.crypto.wire.ops.sync.response.LookupKeyByIdError"
+      ],
+      "doc": "Response's payload, depends on the requested operation"
+    }
+  ]
+}
\ No newline at end of file