diff --git a/generate-routes.ts b/generate-routes.ts
index 1431fd62..5655c06d 100644
--- a/generate-routes.ts
+++ b/generate-routes.ts
@@ -41,6 +41,16 @@ const ignoredEndpointPaths = [
   '/noise_sensors/simulate/trigger_noise_threshold',
 ]
 
+const endpointMethods: Partial<Record<keyof typeof openapi.paths, Method>> = {
+  '/access_codes/create_multiple': 'POST',
+  '/access_codes/unmanaged/convert_to_managed': 'POST',
+  // '/access_codes/update': 'PATCH',
+  '/client_sessions/create': 'POST',
+  // '/noise_sensors/noise_thresholds/update': 'PATCH',
+  '/thermostats/climate_setting_schedules/delete': 'DELETE',
+  // '/thermostats/climate_setting_schedules/update': 'PATCH',
+}
+
 const endpointResources: Partial<
   Record<
     keyof typeof openapi.paths,
@@ -137,7 +147,7 @@ const createEndpoint = (
     throw new Error(`Did not find ${endpointPath} in OpenAPI spec`)
   }
   const spec = openapi.paths[endpointPath]
-  const method = deriveSemanticMethod(Object.keys(spec))
+  const method = deriveSemanticMethod(endpointPath, Object.keys(spec))
   const name = endpointPath.split(routePath)[1]?.slice(1)
   if (name == null) {
     throw new Error(`Could not parse name from ${endpointPath}`)
@@ -158,10 +168,8 @@ const deriveResource = (
   name: string,
   method: Method,
 ): string | null => {
-  if (endpointPath in endpointResources) {
-    return (
-      endpointResources[endpointPath as keyof typeof endpointResources] ?? null
-    )
+  if (isEndpointResource(endpointPath)) {
+    return endpointResources[endpointPath] ?? null
   }
   if (['DELETE', 'PATCH', 'PUT'].includes(method)) return null
   if (['update', 'delete'].includes(name)) return null
@@ -189,7 +197,17 @@ const deriveGroupFromRoutePath = (routePath: string): string | undefined => {
   return parts[0]
 }
 
-const deriveSemanticMethod = (methods: string[]): Method => {
+const deriveSemanticMethod = (
+  endpointPath: string,
+  methods: string[],
+): Method => {
+  if (isEndpointMethod(endpointPath)) {
+    const endpointMethod = endpointMethods[endpointPath]
+    if (endpointMethod == null) {
+      throw new Error(`Got undefined method for ${endpointMethod}`)
+    }
+    return endpointMethod
+  }
   if (methods.includes('get')) return 'GET'
   if (methods.includes('delete')) return 'DELETE'
   if (methods.includes('patch')) return 'PATCH'
@@ -198,6 +216,13 @@ const deriveSemanticMethod = (methods: string[]): Method => {
   throw new Error(`Could not find valid method in ${methods.join(', ')}`)
 }
 
+const isEndpointResource = (
+  key: string,
+): key is keyof typeof endpointResources => key in endpointResources
+
+const isEndpointMethod = (key: string): key is keyof typeof endpointMethods =>
+  key in endpointMethods
+
 const isOpenApiPath = (key: string): key is keyof typeof openapi.paths =>
   key in openapi.paths
 
diff --git a/src/lib/seam/connect/routes/access-codes-unmanaged.ts b/src/lib/seam/connect/routes/access-codes-unmanaged.ts
index 802dea1f..71ed4644 100644
--- a/src/lib/seam/connect/routes/access-codes-unmanaged.ts
+++ b/src/lib/seam/connect/routes/access-codes-unmanaged.ts
@@ -66,12 +66,14 @@ export class SeamHttpAccessCodesUnmanaged {
 
   async convertToManaged(
     body: AccessCodesUnmanagedConvertToManagedBody,
-  ): Promise<void> {
-    await this.client.request<AccessCodesUnmanagedConvertToManagedResponse>({
-      url: '/access_codes/unmanaged/convert_to_managed',
-      method: 'patch',
-      data: body,
-    })
+  ): Promise<AccessCodesUnmanagedConvertToManagedResponse['access_code']> {
+    const { data } =
+      await this.client.request<AccessCodesUnmanagedConvertToManagedResponse>({
+        url: '/access_codes/unmanaged/convert_to_managed',
+        method: 'post',
+        data: body,
+      })
+    return data.access_code
   }
 
   async delete(body: AccessCodesUnmanagedDeleteBody): Promise<void> {
diff --git a/src/lib/seam/connect/routes/access-codes.ts b/src/lib/seam/connect/routes/access-codes.ts
index 2d2abacf..76f4a3f7 100644
--- a/src/lib/seam/connect/routes/access-codes.ts
+++ b/src/lib/seam/connect/routes/access-codes.ts
@@ -79,12 +79,16 @@ export class SeamHttpAccessCodes {
     return data.access_code
   }
 
-  async createMultiple(body: AccessCodesCreateMultipleBody): Promise<void> {
-    await this.client.request<AccessCodesCreateMultipleResponse>({
-      url: '/access_codes/create_multiple',
-      method: 'put',
-      data: body,
-    })
+  async createMultiple(
+    body: AccessCodesCreateMultipleBody,
+  ): Promise<AccessCodesCreateMultipleResponse['access_code']> {
+    const { data } =
+      await this.client.request<AccessCodesCreateMultipleResponse>({
+        url: '/access_codes/create_multiple',
+        method: 'post',
+        data: body,
+      })
+    return data.access_code
   }
 
   async delete(body: AccessCodesDeleteBody): Promise<void> {
diff --git a/src/lib/seam/connect/routes/client-sessions.ts b/src/lib/seam/connect/routes/client-sessions.ts
index 9999b2ea..09cce7d0 100644
--- a/src/lib/seam/connect/routes/client-sessions.ts
+++ b/src/lib/seam/connect/routes/client-sessions.ts
@@ -64,12 +64,15 @@ export class SeamHttpClientSessions {
     return new SeamHttpClientSessions(opts)
   }
 
-  async create(body: ClientSessionsCreateBody): Promise<void> {
-    await this.client.request<ClientSessionsCreateResponse>({
+  async create(
+    body: ClientSessionsCreateBody,
+  ): Promise<ClientSessionsCreateResponse['client_session']> {
+    const { data } = await this.client.request<ClientSessionsCreateResponse>({
       url: '/client_sessions/create',
-      method: 'put',
+      method: 'post',
       data: body,
     })
+    return data.client_session
   }
 
   async delete(body: ClientSessionsDeleteBody): Promise<void> {
diff --git a/src/lib/seam/connect/routes/thermostats-climate-setting-schedules.ts b/src/lib/seam/connect/routes/thermostats-climate-setting-schedules.ts
index 8d08ad7e..24cfa241 100644
--- a/src/lib/seam/connect/routes/thermostats-climate-setting-schedules.ts
+++ b/src/lib/seam/connect/routes/thermostats-climate-setting-schedules.ts
@@ -3,7 +3,11 @@
  * Do not edit this file or add other files to this directory.
  */
 
-import type { RouteRequestBody, RouteResponse } from '@seamapi/types/connect'
+import type {
+  RouteRequestBody,
+  RouteRequestParams,
+  RouteResponse,
+} from '@seamapi/types/connect'
 import type { Axios } from 'axios'
 import type { SetNonNullable } from 'type-fest'
 
@@ -81,13 +85,13 @@ export class SeamHttpThermostatsClimateSettingSchedules {
   }
 
   async delete(
-    body: ThermostatsClimateSettingSchedulesDeleteBody,
+    params?: ThermostatsClimateSettingSchedulesDeleteParams,
   ): Promise<void> {
     await this.client.request<ThermostatsClimateSettingSchedulesDeleteResponse>(
       {
         url: '/thermostats/climate_setting_schedules/delete',
-        method: 'put',
-        data: body,
+        method: 'delete',
+        params,
       },
     )
   }
@@ -143,8 +147,8 @@ export type ThermostatsClimateSettingSchedulesCreateResponse = SetNonNullable<
   Required<RouteResponse<'/thermostats/climate_setting_schedules/create'>>
 >
 
-export type ThermostatsClimateSettingSchedulesDeleteBody = SetNonNullable<
-  Required<RouteRequestBody<'/thermostats/climate_setting_schedules/delete'>>
+export type ThermostatsClimateSettingSchedulesDeleteParams = SetNonNullable<
+  Required<RouteRequestParams<'/thermostats/climate_setting_schedules/delete'>>
 >
 
 export type ThermostatsClimateSettingSchedulesDeleteResponse = SetNonNullable<