oh-my-opencode/src/hooks/tasks-todowrite-disabler/index.ts

import { BLOCKED_TOOLS, REPLACEMENT_MESSAGE } from "./constants";

export interface TasksTodowriteDisablerConfig {
  experimental?: {
    task_system?: boolean;
  };
}

export function createTasksTodowriteDisablerHook(
  config: TasksTodowriteDisablerConfig,
) {
  const isTaskSystemEnabled = config.experimental?.task_system ?? false;

  return {
    "tool.execute.before": async (
      input: { tool: string; sessionID: string; callID: string },
      output: { args: Record<string, unknown> },
    ) => {
      if (!isTaskSystemEnabled) {
        return;
      }

      const toolName = input.tool as string;
      if (BLOCKED_TOOLS.some((blocked) => blocked.toLowerCase() === toolName.toLowerCase())) {
        throw new Error(REPLACEMENT_MESSAGE);
      }
    },
  };
}