Imported from hayashichiho/lab_attendance (AGENTS.md). Install upstream with npx skills add hayashichiho/lab_attendance. Copyright stays with the author.

Cloudflare Workers

Name: lab_attendance
Author: hayashichiho

STOP. Your knowledge of Cloudflare Workers APIs and limits may be outdated. Always retrieve current documentation before any Workers, KV, R2, D1, Durable Objects, Queues, Vectorize, AI, or Agents SDK task.

Docs

https://developers.cloudflare.com/workers/
MCP: https://docs.mcp.cloudflare.com/mcp

For all limits and quotas, retrieve from the product's /platform/limits/ page. eg. /workers/platform/limits

Commands

Command	Purpose
`npx wrangler dev`	Local development
`npx wrangler deploy`	Deploy to Cloudflare
`npx wrangler types`	Generate TypeScript types

Run wrangler types after changing bindings in wrangler.jsonc.

Node.js Compatibility

https://developers.cloudflare.com/workers/runtime-apis/nodejs/

Errors

Error 1102 (CPU/Memory exceeded): Retrieve limits from /workers/platform/limits/
All errors: https://developers.cloudflare.com/workers/observability/errors/

Product Docs

Retrieve API references and limits from: /kv/ · /r2/ · /d1/ · /durable-objects/ · /queues/ · /vectorize/ · /workers-ai/ · /agents/

Best Practices (conditional)

If the application uses Durable Objects or Workflows, refer to the relevant best practices:

Durable Objects: https://developers.cloudflare.com/durable-objects/best-practices/rules-of-durable-objects/
Workflows: https://developers.cloudflare.com/workflows/build/rules-of-workflows/

Project: Lab Attendance

Purpose

研究室Wi-Fiへの接続をトリガーとして、iPhoneから来室イベントを送信し、「今日研究室に来たか」を記録・表示するIoT Platform風のWebアプリを作る。

Architecture

Device: iPhone
Trigger: iOS Shortcutsによる研究室Wi-Fi接続
API: Cloudflare Workers
Database: Cloudflare D1
Dashboard: Cloudflare Workers / static frontend
Transport: HTTPS

MVP

iPhoneから来室イベントを送信する
Device IDとAPI Keyで認証する
D1にその日の初回来室時刻を保存する
同日の重複来室イベントは重複登録しない
Web画面で今日の来室者を確認できる

Domain Rules

来室のみ記録し、退室時刻は記録しない
GPSや位置情報は取得しない
同一device_idについて1日1件の来室記録とする
到着時刻はクライアントではなくサーバ側で決定する
未登録または無効化されたDeviceからのイベントは受け付けない

Development Guidelines

MVPを優先し、不要な複雑化を避ける
Cloudflare固有APIを利用する場合は、上記Cloudflare Workersルールに従って最新ドキュメントを確認する
フロントエンドよりAPI・Device Management・認証を優先する
IoT Platformの学習を目的とし、設計判断の理由をREADME等に残す

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lab_attendance

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