diff --git a/doc/api/garage-admin-v2.json b/doc/api/garage-admin-v2.json
index 9379fee5..fbb1f6c5 100644
--- a/doc/api/garage-admin-v2.json
+++ b/doc/api/garage-admin-v2.json
@@ -554,13 +554,25 @@
             "name": "id",
             "in": "path",
             "description": "Admin API token ID",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           },
           {
             "name": "search",
             "in": "path",
             "description": "Partial token ID or name to search for",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           }
         ],
         "responses": {
@@ -634,19 +646,37 @@
             "name": "id",
             "in": "path",
             "description": "Exact bucket ID to look up",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           },
           {
             "name": "globalAlias",
             "in": "path",
             "description": "Global alias of bucket to look up",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           },
           {
             "name": "search",
             "in": "path",
             "description": "Partial ID or alias to search for",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           }
         ],
         "responses": {
@@ -795,19 +825,34 @@
             "name": "id",
             "in": "path",
             "description": "Access key ID",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           },
           {
             "name": "search",
             "in": "path",
             "description": "Partial key ID or name to search for",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": [
+                "string",
+                "null"
+              ]
+            }
           },
           {
             "name": "showSecretKey",
             "in": "path",
             "description": "Whether to return the secret access key",
-            "required": true
+            "required": true,
+            "schema": {
+              "type": "boolean"
+            }
           }
         ],
         "responses": {
diff --git a/src/api/admin/api.rs b/src/api/admin/api.rs
index fde304f4..3694fd67 100644
--- a/src/api/admin/api.rs
+++ b/src/api/admin/api.rs
@@ -5,7 +5,7 @@ use std::sync::Arc;
 
 use paste::paste;
 use serde::{Deserialize, Serialize};
-use utoipa::ToSchema;
+use utoipa::{IntoParams, ToSchema};
 
 use garage_rpc::*;
 
@@ -303,9 +303,12 @@ pub struct ListAdminTokensResponse(pub Vec<GetAdminTokenInfoResponse>);
 
 // ---- GetAdminTokenInfo ----
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize, IntoParams)]
+#[serde(rename_all = "camelCase")]
 pub struct GetAdminTokenInfoRequest {
+	/// Admin API token ID
 	pub id: Option<String>,
+	/// Partial token ID or name to search for
 	pub search: Option<String>,
 }
 
@@ -634,10 +637,15 @@ pub struct ListKeysResponseItem {
 
 // ---- GetKeyInfo ----
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize, IntoParams)]
+#[serde(rename_all = "camelCase")]
 pub struct GetKeyInfoRequest {
+	/// Access key ID
 	pub id: Option<String>,
+	/// Partial key ID or name to search for
 	pub search: Option<String>,
+	/// Whether to return the secret access key
+	#[serde(default)]
 	pub show_secret_key: bool,
 }
 
@@ -761,10 +769,14 @@ pub struct BucketLocalAlias {
 
 // ---- GetBucketInfo ----
 
-#[derive(Debug, Clone, Serialize, Deserialize)]
+#[derive(Debug, Clone, Serialize, Deserialize, IntoParams)]
+#[serde(rename_all = "camelCase")]
 pub struct GetBucketInfoRequest {
+	/// Exact bucket ID to look up
 	pub id: Option<String>,
+	/// Global alias of bucket to look up
 	pub global_alias: Option<String>,
+	/// Partial ID or alias to search for
 	pub search: Option<String>,
 }
 
diff --git a/src/api/admin/openapi.rs b/src/api/admin/openapi.rs
index 77d8dce8..b7ffdcf1 100644
--- a/src/api/admin/openapi.rs
+++ b/src/api/admin/openapi.rs
@@ -57,7 +57,6 @@ do not correspond to an actual website.
 )]
 fn CheckDomain() -> () {}
 
-
 // **********************************************
 //      Cluster operations
 // **********************************************
@@ -141,10 +140,7 @@ fn ListAdminTokens() -> () {}
 Return information about a specific admin API token.
 You can search by specifying the exact token identifier (`id`) or by specifying a pattern (`search`).
     ",
-    params(
-        ("id", description = "Admin API token ID"),
-        ("search", description = "Partial token ID or name to search for"),
-    ),
+    params(GetAdminTokenInfoRequest),
 	responses(
             (status = 200, description = "Information about the admin token", body = GetAdminTokenInfoResponse),
             (status = 500, description = "Internal server error")
@@ -337,11 +333,7 @@ You can search by specifying the exact key identifier (`id`) or by specifying a
 
 For confidentiality reasons, the secret key is not returned by default: you must pass the `showSecretKey` query parameter to get it.
     ",
-    params(
-        ("id", description = "Access key ID"),
-        ("search", description = "Partial key ID or name to search for"),
-        ("showSecretKey", description = "Whether to return the secret access key"),
-    ),
+    params(GetKeyInfoRequest),
 	responses(
             (status = 200, description = "Information about the access key", body = GetKeyInfoResponse),
             (status = 500, description = "Internal server error")
@@ -434,11 +426,7 @@ It includes its aliases, its web configuration, keys that have some permissions
 on it, some statistics (number of objects, size), number of dangling multipart uploads,
 and its quotas (if any).
     ",
-    params(
-        ("id", description = "Exact bucket ID to look up"),
-        ("globalAlias", description = "Global alias of bucket to look up"),
-        ("search", description = "Partial ID or alias to search for"),
-    ),
+    params(GetBucketInfoRequest),
 	responses(
             (status = 200, description = "Returns exhaustive information about the bucket", body = GetBucketInfoResponse),
             (status = 500, description = "Internal server error")