Skill Claude CodeCodex
Best practices for ISVs (Independent Software Vendors) building SMS features into multi-tenant SaaS platforms using Twilio. Covers customer onboarding for A2P and toll-free compliance, subaccount architecture, sender management, billing patterns, and common ISV pitfalls. Use this when building SMS capabilities that…
Skill Claude CodeCodex
SMS and MMS deep-dive reference. Covers SMS-specific error codes, message filtering troubleshooting ("Messages Being Filtered or Blocked?" diagnostic checklist), MMS media support (US/CA/AU only), and SMS pumping indicators. For sending SMS, use twilio-send-message instead. Use this skill only when debugging SMS…
Skill Claude CodeCodex
Build and deploy Twilio Studio flows — visual IVR, SMS/WhatsApp, and conversation automation — by authoring the flow definition JSON and managing it through the Studio REST API. Covers the flow envelope, widgets, transitions, Liquid templating, the draft/published lifecycle, and when to use Studio vs. custom…
Skill Claude CodeCodex
Route tasks to agents using Twilio TaskRouter. Covers Workers, Task Queues, Workflows, Reservations, skills-based routing, and common gotchas (hyphen attributes, HAS operator, reservation cascade). Use this skill for any multi-agent contact center, support queue, or AI agent escalation routing.
Skill Claude CodeCodex
Send and verify one-time passcodes (OTPs) via Twilio Verify over SMS (auto-upgraded to RCS where supported), voice, email, or WhatsApp. Covers creating a Verify Service, sending tokens, checking submitted codes, automatic WhatsApp-to-SMS fallback, and service configuration. TOTP is supported via the Factors API (a…
Skill Claude CodeCodex
Build AI-powered voice agents using Twilio ConversationRelay. Handles real-time speech recognition (ASR), text-to-speech (TTS), and bidirectional audio streaming via WebSocket. Covers TwiML setup, WebSocket message types, LLM integration, streaming responses, and voice provider configuration. Use this skill to build…
Skill Claude CodeCodex
Make outbound phone calls via Twilio's Programmable Voice REST API. Covers the full voice platform: calls.create(), answering machine detection (AMD), conference-based agent bridging, call recording, status tracking, and SIP Trunking. Use this skill for outbound calls, sales dialers, or when asking what voice APIs are…
Skill Claude CodeCodex
Build voice call logic using TwiML (Twilio Markup Language). Covers the core verbs (Say, Play, Gather, Dial, Record, Conference), generating TwiML with Python and Node.js SDKs, and a complete inbound call IVR example. Use this skill to define call behavior for inbound or outbound calls.
Skill Claude CodeCodex
Design, secure, and operate Twilio webhook endpoints. Covers inbound event handling, status callbacks, signature validation, connection overrides for retry and timeout tuning, local development tunneling, and production hardening. Use this skill whenever an agent needs to receive HTTP callbacks from Twilio for any…
Skill Claude CodeCodex
Create, configure, and manage WhatsApp Business senders via Twilio's Channels Senders API. Covers programmatic sender registration, profile setup, webhook configuration, sender lifecycle statuses, and ISV flows. Use this skill to register and manage production WhatsApp senders at scale.
Skill Claude CodeCodex
WhatsApp messaging deep-dive reference. Covers the 24-hour service window rules (free-form vs template mode), sandbox setup for testing, template approval workflow, production sender requirements, and WhatsApp-specific error handling. For sending WhatsApp messages, use twilio-send-message instead. Use this skill when…