The Agent Skills Directory

[EXTERNAL_DOWNLOADS]: Downloads the official Telegram Web App SDK from Telegram's CDN and the cloudflared utility from Cloudflare's public GitHub releases for local development tunneling.
[COMMAND_EXECUTION]: Includes shell scripts and instructions for local environment setup, using commands such as curl, chmod, and sudo to facilitate binary installation and endpoint connectivity testing.
[SAFE]: Provides comprehensive guidance on implementing critical security controls, including cryptographically sound backend validation of Telegram authentication data (HMAC-SHA256 and Ed25519), protection against replay attacks using nonces, and secure CORS/CSP configurations.

telegram-webapps