task description auto

internal/agents/mergein.go

@@ -638,6 +638,41 @@ func (m *Manager) setMergeTitle(ctx context.Context, l *live, raw json.RawMessag
 	return fmt.Sprintf("Merge commit title set to %q.", title), nil
 }
 
+func (m *Manager) setTaskTitleTool(l *live) mcp.Tool {
+	return mcp.Tool{
+		Name: "set_task_title",
+		Description: "Set this task's title, which names it in byre's task list and switcher. " +
+			"Keep it very short (two to four words), distinct from the project's other tasks, and to the point, for example \"webhook retries\". " +
+			"Until set_merge_title is called, the merge commit title follows it. It replaces any earlier title.",
+		InputSchema: json.RawMessage(`{
+			"type": "object",
+			"properties": {
+				"title": {"type": "string", "description": "One short line."}
+			},
+			"required": ["title"]
+		}`),
+		Handler: func(ctx context.Context, raw json.RawMessage) (string, error) {
+			args := setMergeTitleArgs{}
+			err := json.Unmarshal(raw, &args)
+			if err != nil {
+				return "", fmt.Errorf("malformed set_task_title call: %w", err)
+			}
+			title := strings.TrimSpace(args.Title)
+			if title == "" || strings.ContainsAny(title, "\r\n") {
+				return "", fmt.Errorf("%w: title must be one non-empty line", ErrInvalid)
+			}
+			err = m.store.SetTitle(ctx, l.taskID, title, agentActor)
+			if errors.Is(err, store.ErrNotFound) {
+				return "", fmt.Errorf("%w: this task is closed or merging", ErrConflict)
+			}
+			if err != nil {
+				return "", err
+			}
+			return fmt.Sprintf("Task title set to %q.", title), nil
+		},
+	}
+}
+
 type stopMergeArgs struct {
 	Reason string `json:"reason"`
 }