claude-status-webhook/CLAUDE.md

CLAUDE.md

This file provides guidance to Claude Code (claude.ai/code) when working with code in this repository.

Project

Telegram bot that forwards status.claude.com (Atlassian Statuspage) webhook notifications to subscribed users. Hosted on Cloudflare Workers.

Commands

• npm run dev — Start local dev server (wrangler dev, emulates KV + Queues locally)
• npm run deploy — Deploy to Cloudflare Workers
• npx wrangler deploy --dry-run --outdir=dist — Verify build without deploying

No test framework configured yet. No linter configured.

Secrets (set via wrangler secret put)

• BOT_TOKEN — Telegram bot token
• WEBHOOK_SECRET — Secret token in Statuspage webhook URL path

Architecture

Cloudflare Workers with two entry points exported from src/index.js:

• fetch — Hono.js HTTP handler (routes below)
• queue — CF Queues consumer for fan-out message delivery

Routes

Method	Path	Handler	Purpose
GET	/	inline	Health check
POST	/webhook/telegram	bot-commands.js	grammY webhookCallback("cloudflare-mod")
POST	/webhook/status/:secret	statuspage-webhook.js	Receives Statuspage webhooks

Data Flow

1. Statuspage → Worker: Webhook POST → validate secret (timing-safe) → parse incident/component event → filter subscribers by preference → sendBatch to CF Queue
2. Queue → Telegram: Consumer processes batches of 30 → sendMessage via raw fetch → auto-removes blocked subscribers (403/400), retries on 429
3. User → Bot: Telegram webhook → grammY handles /start, /stop, /status, /subscribe commands → reads/writes KV

KV Storage

Single key subscribers stores a JSON object keyed by composite subscriber ID:

• DM/group: "chatId" → { types: ["incident", "component"] }
• Supergroup topic: "chatId:threadId" → { types: ["incident"] }

kv-store.js handles key building/parsing — threadId can be 0 (General topic), so null checks use != null not truthiness.

Supergroup Topic Support

Bot stores message_thread_id from the topic where /start was sent. Notifications and queue consumer include message_thread_id in sendMessage payload to target the correct topic.

Key Dependencies

• hono — HTTP routing framework
• grammy — Telegram Bot API framework (webhook mode for CF Workers)
• wrangler — CF Workers CLI (dev/deploy)

CF Bindings (wrangler.jsonc)

• claude_status — KV namespace
• claude-status — Queue producer/consumer (batch size 30, max retries 3)