diff -r d72b1dff01c9 -r 238a91f224b1 src/lib/ai/claude/Ai_chat.luan
--- a/src/lib/ai/claude/Ai_chat.luan	Sat Aug 09 05:57:34 2025 +0900
+++ b/src/lib/ai/claude/Ai_chat.luan	Sat Aug 09 09:31:28 2025 +0900
@@ -1,6 +1,7 @@
 local Luan = require "luan:Luan.luan"
 local error = Luan.error
 local ipairs = Luan.ipairs or error()
+local pairs = Luan.pairs or error()
 local type = Luan.type or error()
 local String = require "luan:String.luan"
 local starts_with = String.starts_with or error()
@@ -76,10 +77,40 @@
 	end_for
 end
 
+local functions = {
+	get_thread = {
+		tool = {
+			cname = "get_thread"
+			description = "Get the contents of a thread/chat with Claude on this website.  The contents will be JSON in the format of the Claude API."
+			input_schema = {
+				type = "object"
+				properties = {
+					thread_id = {
+						description = "The ID of the thread"
+						type = "string"
+					}
+				}
+			}
+		}
+		fn = function(input)
+			local Chat = require "site:/lib/Chat.luan"
+			local thread_id = input.thread_id or error()
+			local chat = Chat.get_by_id(thread_id) or error
+			return chat.ai_thread or error()
+		end
+	}
+}
+local tools = {nil}
+for name, f in pairs(functions) do
+	f.name = name
+	f.tool.name = name
+	tools[#tools+1] = f.tool
+end
 
 function Ai_chat.init(system_prompt)
 	local thread = {
 		system = system_prompt
+		tools = tools
 		messages = {nil}
 	}
 	return json_string(thread)
@@ -90,12 +121,11 @@
 	return #thread.messages > 0
 end
 
-function Ai_chat.ask(thread,input)
-	thread = json_parse(thread)
+local function ask(thread,content)
 	local messages = thread.messages or error
 	messages[#messages+1] = {
 		role = "user"
-		content = input
+		content = content
 	}
 --[=[
 	messages[#messages+1] = {
@@ -120,6 +150,31 @@
 		role = "assistant"
 		content = content
 	}
+	local stop_reason = result.stop_reason or error()
+	if stop_reason == "end_turn" then
+		-- ok
+	elseif stop_reason == "tool_use" then
+		local response = {nil}
+		for _, part in ipairs(content) do
+			if part.type == "tool_use" then
+				local f = functions[part.name] or error()
+				local input = part.input or error()
+				response[#response+1] = {
+					type = "tool_result"
+					tool_use_id = part.id or error()
+					content = f.fn(input)
+				}
+			end
+		end
+		ask(thread,response)
+	else
+		error(stop_reason)
+	end
+end
+
+function Ai_chat.ask(thread,input)
+	thread = json_parse(thread)
+	ask(thread,input)
 	return json_string(thread)
 end