diff --git a/main/agent/context_builder.c b/main/agent/context_builder.c
index e8a5625..5f8d503 100644
--- a/main/agent/context_builder.c
+++ b/main/agent/context_builder.c
@@ -36,7 +36,7 @@ esp_err_t context_build_system_prompt(char *buf, size_t size)
         "Be helpful, accurate, and concise.\n\n"
         "## Available Tools\n"
         "You have access to the following tools:\n"
-        "- web_search: Search the web for current information. "
+        "- web_search: Search the web for current information (Tavily preferred, Brave fallback when configured). "
         "Use this when you need up-to-date facts, news, weather, or anything beyond your training data.\n"
         "- get_current_time: Get the current date and time. "
         "You do NOT have an internal clock — always use this tool when you need to know the time or date.\n"
diff --git a/main/tools/tool_registry.c b/main/tools/tool_registry.c
index 6323ef1..6c82a3e 100644
--- a/main/tools/tool_registry.c
+++ b/main/tools/tool_registry.c
@@ -60,7 +60,7 @@ esp_err_t tool_registry_init(void)
 
     mimi_tool_t ws = {
         .name = "web_search",
-        .description = "Search the web for current information. Use this when you need up-to-date facts, news, weather, or anything beyond your training data.",
+        .description = "Search the web for current information via Tavily (preferred) or Brave when configured.",
         .input_schema_json =
             "{\"type\":\"object\","
             "\"properties\":{\"query\":{\"type\":\"string\",\"description\":\"The search query\"}},"