The Agent Skills Directory

SAFE: The skill follows industry standard practices for Twilio integrations.
Credentials Management: The code correctly retrieves sensitive information like TWILIO_ACCOUNT_SID and TWILIO_AUTH_TOKEN from environment variables using os.environ, avoiding hardcoded secrets.
Webhook Security: The IVR pattern includes a RequestValidator decorator that verifies the X-Twilio-Signature header, protecting the application from spoofed requests.
Input Validation: The send_sms method includes a helper validate_e164 to ensure phone numbers match the required E.164 format via regular expressions.
Dependency Safety: All libraries used (twilio, flask) are reputable and standard for these types of integrations.
Indirect Prompt Injection (LOW): As a communication skill, it handles untrusted data (phone numbers and message bodies) which are sent to external services. While the skill performs basic validation on phone numbers, it does not sanitize message bodies, which is typical for its purpose.

twilio-communications