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 — Verify build without deploying
• node scripts/setup-bot.js — One-time: register bot commands + set Telegram webhook (requires BOT_TOKEN and WORKER_URL env vars)

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
• STATUSPAGE_HMAC_KEY — HMAC key from Statuspage webhook settings (optional, for signature verification)

Architecture

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

• fetch — Hono.js HTTP handler (routes below)
• queue — CF Queues consumer for fan-out message delivery
• scheduled — CF Cron Trigger (every 5 min) for status polling safety net

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 (HMAC + URL secret)
GET	/migrate/:secret	inline	One-time KV migration (remove after use)

Data Flow

1. Statuspage → Worker: Webhook POST → verify HMAC signature (fallback: URL secret) → parse incident/component event → filter subscribers by type + component → sendBatch to CF Queue
2. Cron → Worker: Every 5 min → fetch summary → compare with last-status KV → notify on changes → update stored state
3. Queue → Telegram: Consumer processes batches of 30 → sendMessage via telegram-api.js helper → auto-removes blocked subscribers (403/400), retries on 429
4. User → Bot: Telegram webhook → grammY handles /help, /start, /stop, /status, /subscribe, /history, /uptime commands → reads/writes KV

KV Storage

Per-subscriber keys (no read-modify-write races):

• sub:{chatId} → { types: ["incident", "component"], components: [] }
• sub:{chatId}:{threadId} → { types: ["incident"], components: ["API"] }

Special keys:

• last-status — JSON snapshot of component statuses for cron comparison

kv-store.js handles key building/parsing with kv.list({ prefix: "sub:" }) pagination. threadId can be 0 (General topic), so null checks use != null.

Component-Specific Subscriptions

Subscribers can filter to specific components via /subscribe component <name>. Empty components array = all components (default). Filtering applies to both webhook and cron notifications.

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)
• Cron: */5 * * * * — triggers scheduled export every 5 minutes