diff --git a/package.json b/package.json
index d0f5944..6b9a7c4 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@missionsquad/mcp-msq",
-  "version": "0.2.3",
+  "version": "0.2.4",
   "description": "MCP server interface for the MissionSquad API",
   "type": "module",
   "main": "dist/index.js",
diff --git a/src/schemas.ts b/src/schemas.ts
index fe67394..b77d7c8 100644
--- a/src/schemas.ts
+++ b/src/schemas.ts
@@ -132,8 +132,8 @@ export const UpdateAgentSchema = z.object({
   timezoneOffset: NonEmptyString.optional().describe('Timezone offset string (e.g. "-05:00") used when addToday is true.'),
   tools: z.array(z.string()).optional().describe('Array of tool function names. Replaces all existing tools.'),
   selectedFunctions: z.record(z.array(z.string())).optional().describe('Map of MCP server name to function names. Replaces existing selectedFunctions.'),
-  temperature: z.number().optional().describe('New temperature setting.'),
-  maxTokens: z.number().int().optional().describe('New max tokens setting.'),
+  temperature: z.number().optional().describe('Temperature for model generation (stored in modelOptions). Use -1 or omit to use model default.'),
+  maxTokens: z.number().int().optional().describe('Max output tokens (stored in modelOptions). Use -1 or omit for unlimited/model default.'),
   combineSystemPrompts: z.boolean().optional().describe('Whether to combine system prompts from agent and messages.'),
   convertSystemPrompt: z.boolean().optional().describe('Whether to convert additional system prompts to user messages.'),
 })