Skill のスクリプト、参照、素材

codex-skill-lab/
  data/tasks.json
  .agents/skills/todo-summary/
    SKILL.md
    references/input-format.md
    assets/report.md
    scripts/count-tasks.mjs

[
  {"id":"a","title":"Read","completed":true},
  {"id":"b","title":"Build","completed":false},
  {"id":"c","title":"Read","completed":true}
]

# Task input contract

- Input is a JSON array. An empty array is valid.
- Each record has a nonempty string id, a nonempty string title,
  and a boolean completed value.
- IDs are unique. Repeated titles are allowed and remain separate.
- Extra fields may be present; the summary ignores them.
- Invalid input must fail; do not silently drop or repair records.
- Read input only. Do not change, sort or overwrite the source file.
- Report total, active and completed. total = active + completed.

# Task summary

Input: <relative input path>
Command: <exact command>
Exit code: <observed exit code>
Total: <observed total>
Active: <observed active>
Completed: <observed completed>
Input preserved: <verification and result>
Not checked: <remaining checks>

import { readFileSync } from 'node:fs';

try {
  if (process.argv.length !== 3) {
    throw new Error('Usage: node count-tasks.mjs <input.json>');
  }
  const tasks = JSON.parse(readFileSync(process.argv[2], 'utf8'));
  if (!Array.isArray(tasks)) throw new Error('Input must be an array');
  const ids = new Set();
  for (const [index, task] of tasks.entries()) {
    if (!task || typeof task !== 'object'
      || typeof task.id !== 'string' || !task.id.trim()
      || typeof task.title !== 'string' || !task.title.trim()
      || typeof task.completed !== 'boolean') {
      throw new Error(`Invalid task at index ${index}`);
    }
    if (ids.has(task.id)) throw new Error(`Duplicate id: ${task.id}`);
    ids.add(task.id);
  }
  const completed = tasks.filter(task => task.completed).length;
  const result = { total: tasks.length, active: tasks.length - completed, completed };
  process.stdout.write(JSON.stringify(result, null, 2) + '\n');
} catch (error) {
  process.stderr.write((error instanceof Error ? error.message : String(error)) + '\n');
  process.exitCode = 1;
}

node .agents/skills/todo-summary/scripts/count-tasks.mjs data/tasks.json

{
  "total": 3,
  "active": 1,
  "completed": 2
}

cd .agents/skills/todo-summary
node scripts/count-tasks.mjs data/tasks.json

cd ../../..

---
name: todo-summary
description: Summarize a local task JSON array with verified counts. Use for task-count reports, not for editing tasks, website styling, or deployment.
---

# Todo summary

1. Confirm the practice root and the exact input path with the user request.
2. Read [the input contract](references/input-format.md).
   If any required resource is missing or unreadable, stop and report it.
3. Read [the checker](scripts/count-tasks.mjs) before running it.
4. From the practice root, run:

   ```sh
   node .agents/skills/todo-summary/scripts/count-tasks.mjs data/tasks.json
   ```

   Replace the input argument only if the request names another input file.
5. If the command fails, report the actual error. Do not guess counts or repair input.
6. If it succeeds, use [the report template](assets/report.md) in the reply.
7. Include the actual command, exit code and input-preservation check.
   Say which checks were not performed. Do not claim browser testing.
8. Do not edit source data, skill resources, or project code, and do not publish.

Use the selected todo-summary skill for data/tasks.json.
Read the skill and its linked resources. Run the checker from this practice root.
Return the report in your reply only. Do not write a report file or modify any input.
Include actual output, exit code, and what you verified about input preservation.

[
  {"id":"next-a","title":"Plan","completed":false},
  {"id":"next-b","title":"Check","completed":false}
]

node .agents/skills/todo-summary/scripts/count-tasks.mjs data/tasks-next.json