tool description最適化

1 files changed, 13 insertions, 5 deletions

diff --git a/src/mcp/tools/write_message.c b/src/mcp/tools/write_message.c
index c4b18cc..7df0058 100644
--- a/src/mcp/tools/write_message.c
+++ b/src/mcp/tools/write_message.c
@@ -211,13 +211,21 @@ bool
 tiny_mcp_register_write_message(mcpc_server_t *server)
 {
   mcpc_tool_t *tool
-      = tiny_mcp_tool_new("write_message", "Append a conversation message", call_write_message);
-  return tool && tiny_mcp_tool_add_property(tool, "session_id", "Session ID", MCPC_U8STR, true)
-         && tiny_mcp_tool_add_property(tool, "role", "user, assistant, or system", MCPC_U8STR, true)
-         && tiny_mcp_tool_add_property(tool, "content", "Message text", MCPC_U8STR, true)
+      = tiny_mcp_tool_new("write_message",
+                          "Append and durably persist a conversation message. Use it to store "
+                          "information that should remain available after server restarts.",
+                          call_write_message);
+  return tool
+         && tiny_mcp_tool_add_property(
+             tool, "session_id", "Conversation session that owns the message.", MCPC_U8STR, true)
+         && tiny_mcp_tool_add_property(
+             tool, "role", "Message author role: user, assistant, or system.", MCPC_U8STR, true)
+         && tiny_mcp_tool_add_property(
+             tool, "content", "UTF-8 message text to persist.", MCPC_U8STR, true)
          && tiny_mcp_tool_add_property(tool,
                                        "metadata_json",
-                                       "Optional metadata object JSON; defaults to {}",
+                                       "Optional JSON object string containing tool_call_id, tags, "
+                                       "and/or memory_tier; defaults to {}.",
                                        MCPC_U8STR,
                                        false)
          && mcpc_server_add_tool(server, tool) == MCPC_EC_0;