telegram-bot

Validating Telegram webhook secret_token securely in grammY requires constant-time comparison to prevent timing attacks. This Skill implements safe webhook validation alongside correct middleware ordering, ensuring your production bot rejects unauthorized requests reliably.

Verifying Telegram Mini App initData server-side involves checking the HMAC signature against your bot token to prevent client-side spoofing. This Skill provides the correct server-side validation logic to securely authenticate Mini App users.

Handling Telegram Stars XTR payments idempotently requires tracking immutable payment charge identifiers to prevent duplicate access grants. This Skill implements Payments 2.0 flows with idempotent granting and refund logic for safe transaction processing.

Telegram bot 409 conflicts during multi-instance scaling occur when multiple processes run long-polling simultaneously without sequentialization. This Skill fixes 409 and timeout issues by configuring correct webhooks, allowed_updates, and deterministic middleware ordering.

Redis sessions are needed to scale a grammY 1.x Telegram bot horizontally when operating across multiple instances. This Skill designs production bot architectures with typed handlers, Redis-backed sessions, and deterministic sequentialize middleware to ensure consistency.

Correct grammY middleware ordering for conversations and sessions requires sequentialize before session to ensure deterministic update processing. This Skill configures this exact middleware chain to prevent race conditions and state corruption.