diff --git a/chat.go b/chat.go
index 86623f6..ef2ab79 100644
--- a/chat.go
+++ b/chat.go
@@ -145,11 +145,14 @@ func (r *Request) Parse() (*openrouter.ChatCompletionRequest, error) {
 		request.Messages = append(request.Messages, openrouter.SystemMessage(prompt))
 	}
 
-	if model.Tools && r.Tools.Search && env.Tokens.Exa != "" {
+	if model.Tools && r.Tools.Search && env.Tokens.Exa != "" && r.Iterations > 1 {
 		request.Tools = GetSearchTools()
 		request.ToolChoice = "auto"
 
-		request.Messages = append(request.Messages, openrouter.SystemMessage(InternalToolsPrompt))
+		request.Messages = append(
+			request.Messages,
+			openrouter.SystemMessage(fmt.Sprintf(InternalToolsPrompt, r.Iterations-1)),
+		)
 	}
 
 	for _, message := range r.Messages {
@@ -273,7 +276,7 @@ func HandleChat(w http.ResponseWriter, r *http.Request) {
 	for iteration := range raw.Iterations {
 		debug("iteration %d of %d", iteration+1, raw.Iterations)
 
-		if iteration == raw.Iterations-1 {
+		if len(request.Tools) > 0 && iteration == raw.Iterations-1 {
 			debug("no more tool calls")
 
 			request.Tools = nil
diff --git a/internal/tools.txt b/internal/tools.txt
index af7c8ce..0bb39aa 100644
--- a/internal/tools.txt
+++ b/internal/tools.txt
@@ -1 +1,3 @@
-You have access to web search tools. Use `search_web` with `query` (string) and `num_results` (1-10) to find current information - when searching for recent/latest information, always include specific dates or years (e.g., "august 2025"). Use `fetch_contents` with `urls` (array) to read full page content from search results or known URLs. Use `github_repository` with `owner` (string) and `repo` (string) to get repository overviews (info, branches, files, README) without cloning. Formulate specific, targeted queries and provide all required parameters. Call only one tool per response.
\ No newline at end of file
+You have access to web search tools. Use `search_web` with `query` (string) and `num_results` (1-10) to find current information - when searching for recent/latest information, always include specific dates or years (e.g., "august 2025"). Use `fetch_contents` with `urls` (array) to read full page content from search results or known URLs. Use `github_repository` with `owner` (string) and `repo` (string) to get repository overviews (info, branches, files, README) without cloning. Formulate specific, targeted queries and provide all required parameters. Call only one tool per response.
+
+You have %d tool calls available in total.
\ No newline at end of file